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-rw-r--r--development/gcc5/README46
-rw-r--r--development/gcc5/c89.sh11
-rw-r--r--development/gcc5/c99.sh11
-rw-r--r--development/gcc5/ecj.sh5
-rw-r--r--development/gcc5/fastjar-patches/1000-fastjar-0.97-segfault.patch29
-rw-r--r--development/gcc5/fastjar-patches/1001-fastjar-0.97-len1.patch16
-rw-r--r--development/gcc5/fastjar-patches/1002-fastjar-0.97-filename0.patch14
-rw-r--r--development/gcc5/fastjar-patches/1003-fastjar-CVE-2010-0831.patch102
-rw-r--r--development/gcc5/fastjar-patches/1004-fastjar-man.patch27
-rw-r--r--development/gcc5/gcc5.SlackBuild583
-rw-r--r--development/gcc5/gcc5.info17
-rw-r--r--development/gcc5/libgcj-5.pc10
-rw-r--r--development/gcc5/patches/0001-i386-Move-struct-ix86_frame-to-machine_function.diff239
-rw-r--r--development/gcc5/patches/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff72
-rw-r--r--development/gcc5/patches/0003-i386-More-use-reference-of-struct-ix86_frame-to-avoi.diff59
-rw-r--r--development/gcc5/patches/0004-i386-Don-t-use-reference-of-struct-ix86_frame.diff63
-rw-r--r--development/gcc5/patches/0005-x86-Add-mindirect-branch-doc.diff279
-rw-r--r--development/gcc5/patches/0005-x86-Add-mindirect-branch.diff1870
-rw-r--r--development/gcc5/patches/0006-x86-Add-mfunction-return-doc.diff300
-rw-r--r--development/gcc5/patches/0006-x86-Add-mfunction-return.diff1409
-rw-r--r--development/gcc5/patches/0007-x86-Add-mindirect-branch-register-doc.diff231
-rw-r--r--development/gcc5/patches/0007-x86-Add-mindirect-branch-register.diff812
-rw-r--r--development/gcc5/patches/0008-x86-Add-V-register-operand-modifier-doc.diff65
-rw-r--r--development/gcc5/patches/0008-x86-Add-V-register-operand-modifier.diff125
-rw-r--r--development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-.diff275
-rw-r--r--development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-doc.diff102
-rw-r--r--development/gcc5/patches/gcc-no_fixincludes.diff27
-rw-r--r--development/gcc5/patches/gcc.66782.diff124
-rw-r--r--development/gcc5/patches/gcc.69140.diff13
-rw-r--r--development/gcc5/patches/glibc2.28-ustat.diff31
-rw-r--r--development/gcc5/profile.d/gcc5.csh7
-rw-r--r--development/gcc5/profile.d/gcc5.sh7
-rw-r--r--development/gcc5/slack-desc.gcc519
33 files changed, 7000 insertions, 0 deletions
diff --git a/development/gcc5/README b/development/gcc5/README
new file mode 100644
index 0000000000..043d62efcf
--- /dev/null
+++ b/development/gcc5/README
@@ -0,0 +1,46 @@
+This gcc5 package can be installed alongside Slackware's gcc-7 packages.
+These version 7 compilers can sometimes be quite a bit more strict about
+what they accept as valid code. As a consequence, you will regularly run
+into compilation issues with software. Not just the software made with
+the scripts on slackbuilds.org, but also some of the software in
+the Slackware core distribution requires patches in order to get them
+to compile.
+
+Still having the gcc version 5 compilers can sometimes be a lifesaver.
+Particulars of the gcc5 package:
+- The gcc5 binaries were given a suffix '-5' to make them stand apart
+ from Slackware's default compilers.
+- The gcc5 package only contains the C, C++ and Java language compilers.
+- One all-encompassing package is built by the SlackBuild script.
+- Profile scripts are added to /etc/profile.d/. You can 'source'
+ the profile script to prefer the gcc-5 compilers over gcc-7.
+- On 64bit Slackware, the gcc5.SlackBuild will detect an existing gcc
+ multilib compiler and will then build a multilib capable gcc5.
+ If you run pure 64bit Slackware, then a pure 64bit gcc5 package is built.
+
+How to use these gcc5 compilers instead of Slackware's default C and C++?
+Simple:
+In your console or terminal, you 'source' the provided profile script,
+like this (a c-shell compatible script is available as well):
+
+ source /etc/profile.d/gcc5.sh
+
+The command 'source' is equivalent to the dot command ' . '.
+The profile script will (re-)define the common variables that are used
+by make and other programs to determine which binary to run as the compiler:
+
+export CC=gcc-5
+export CPP=cpp-5
+export CXX=g++-5
+export AR=gcc-ar-5
+export NM=gcc-nm-5
+export RANLIB=gcc-ranlib-5
+
+Nothing else needs to be done after sourcing the profile script.
+All you do next is run your compile job as usual in that same console.
+Your program will be compiled with the binaries provided by the gcc5 package.
+
+** WARNING:
+** The temporary build location used by the script (defaulting here to /tmp/SBo)
+** should *NOT* be a directory path a non-root user could create later...
+
diff --git a/development/gcc5/c89.sh b/development/gcc5/c89.sh
new file mode 100644
index 0000000000..424b1e1669
--- /dev/null
+++ b/development/gcc5/c89.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+fl="-std=c89"
+CC=${CC:-"gcc"}
+for opt; do
+ case "$opt" in
+ -ansi|-std=c89|-std=iso9899:1990) fl="";;
+ -std=*) echo "`basename $0` called with non ANSI/ISO C option $opt" >&2
+ exit 1;;
+ esac
+done
+exec $CC $fl ${1+"$@"}
diff --git a/development/gcc5/c99.sh b/development/gcc5/c99.sh
new file mode 100644
index 0000000000..c33636937c
--- /dev/null
+++ b/development/gcc5/c99.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+fl="-std=c99"
+CC=${CC:-"gcc"}
+for opt; do
+ case "$opt" in
+ -std=c99|-std=iso9899:1999) fl="";;
+ -std=*) echo "`basename $0` called with non ISO C99 option $opt" >&2
+ exit 1;;
+ esac
+done
+exec $CC $fl ${1+"$@"}
diff --git a/development/gcc5/ecj.sh b/development/gcc5/ecj.sh
new file mode 100644
index 0000000000..1d8b797931
--- /dev/null
+++ b/development/gcc5/ecj.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+CLASSPATH=@JAVADIR@/ecj.jar${CLASSPATH:+:}$CLASSPATH \
+ java org.eclipse.jdt.internal.compiler.batch.Main "$@"
+
diff --git a/development/gcc5/fastjar-patches/1000-fastjar-0.97-segfault.patch b/development/gcc5/fastjar-patches/1000-fastjar-0.97-segfault.patch
new file mode 100644
index 0000000000..ab6262407a
--- /dev/null
+++ b/development/gcc5/fastjar-patches/1000-fastjar-0.97-segfault.patch
@@ -0,0 +1,29 @@
+2009-01-14 Jakub Jelinek <jakub@redhat.com>
+
+ * jartool.c (make_manifest): Initialize current_time before
+ calling unix2dostime on it.
+
+--- fastjar-0.97/jartool.c.jj 2008-10-15 18:35:37.000000000 +0200
++++ fastjar-0.97/jartool.c 2009-01-14 15:40:50.000000000 +0100
+@@ -820,6 +820,10 @@ int make_manifest(int jfd, const char *m
+ int mod_time; /* file modification time */
+ struct zipentry *ze;
+
++ current_time = time(NULL);
++ if(current_time == (time_t)-1)
++ exit_on_error("time");
++
+ mod_time = unix2dostime(&current_time);
+
+ /* If we are creating a new manifest, create a META-INF directory entry */
+@@ -828,10 +832,6 @@ int make_manifest(int jfd, const char *m
+
+ memset((file_header + 12), '\0', 16); /*clear mod time, crc, size fields*/
+
+- current_time = time(NULL);
+- if(current_time == (time_t)-1)
+- exit_on_error("time");
+-
+ PACK_UB2(file_header, LOC_EXTRA, 0);
+ PACK_UB2(file_header, LOC_COMP, 0);
+ PACK_UB2(file_header, LOC_FNLEN, nlen);
diff --git a/development/gcc5/fastjar-patches/1001-fastjar-0.97-len1.patch b/development/gcc5/fastjar-patches/1001-fastjar-0.97-len1.patch
new file mode 100644
index 0000000000..722351d334
--- /dev/null
+++ b/development/gcc5/fastjar-patches/1001-fastjar-0.97-len1.patch
@@ -0,0 +1,16 @@
+2009-12-21 Chris Ball <cjb@laptop.org>
+
+ * jartool.c (add_file_to_jar): Test write return value against -1
+ instead of 1.
+
+--- fastjar-0.97/jartool.c.jj 2008-10-15 12:35:37.000000000 -0400
++++ fastjar-0.97/jartool.c 2009-12-22 06:48:09.309530000 -0500
+@@ -1257,7 +1257,7 @@ int add_file_to_jar(int jfd, int ffd, co
+ exit_on_error("write");
+
+ /* write the file name to the zip file */
+- if (1 == write(jfd, fname, file_name_length))
++ if (-1 == write(jfd, fname, file_name_length))
+ exit_on_error("write");
+
+ if(verbose){
diff --git a/development/gcc5/fastjar-patches/1002-fastjar-0.97-filename0.patch b/development/gcc5/fastjar-patches/1002-fastjar-0.97-filename0.patch
new file mode 100644
index 0000000000..34a02a74f3
--- /dev/null
+++ b/development/gcc5/fastjar-patches/1002-fastjar-0.97-filename0.patch
@@ -0,0 +1,14 @@
+2010-03-01 Richard Guenther <rguenther@suse.de>
+
+ * jartool.c (read_entries): Properly zero-terminate filename.
+
+--- fastjar-0.97/jartool.c 6 Sep 2009 22:16:00 -0000 1.59
++++ fastjar-0.97/jartool.c 1 Mar 2010 15:38:43 -0000 1.60
+@@ -790,6 +790,7 @@ int read_entries (int fd)
+ progname, jarfile);
+ return 1;
+ }
++ ze->filename[len] = '\0';
+ len = UNPACK_UB4(header, CEN_EFLEN);
+ len += UNPACK_UB4(header, CEN_COMLEN);
+ if (lseek (fd, len, SEEK_CUR) == -1)
diff --git a/development/gcc5/fastjar-patches/1003-fastjar-CVE-2010-0831.patch b/development/gcc5/fastjar-patches/1003-fastjar-CVE-2010-0831.patch
new file mode 100644
index 0000000000..2c6e23c76c
--- /dev/null
+++ b/development/gcc5/fastjar-patches/1003-fastjar-CVE-2010-0831.patch
@@ -0,0 +1,102 @@
+2010-06-10 Jakub Jelinek <jakub@redhat.com>
+ Dan Rosenberg <dan.j.rosenberg@gmail.com>
+
+ * jartool.c (extract_jar): Fix up checks for traversal to parent
+ directories, disallow absolute paths, make the code slightly more
+ efficient.
+
+--- fastjar-0.97/jartool.c.jj 2009-09-07 00:10:47.000000000 +0200
++++ fastjar-0.97/jartool.c 2010-06-08 20:00:29.000000000 +0200
+@@ -1730,7 +1730,17 @@ int extract_jar(int fd, const char **fil
+ struct stat sbuf;
+ int depth = 0;
+
+- tmp_buff = malloc(sizeof(char) * strlen((const char *)filename));
++ if(*filename == '/'){
++ fprintf(stderr, "Absolute path names are not allowed.\n");
++ exit(EXIT_FAILURE);
++ }
++
++ tmp_buff = malloc(strlen((const char *)filename));
++
++ if(tmp_buff == NULL) {
++ fprintf(stderr, "Out of memory.\n");
++ exit(EXIT_FAILURE);
++ }
+
+ for(;;){
+ const ub1 *idx = (const unsigned char *)strchr((const char *)start, '/');
+@@ -1738,25 +1748,28 @@ int extract_jar(int fd, const char **fil
+ if(idx == NULL)
+ break;
+ else if(idx == start){
++ tmp_buff[idx - filename] = '/';
+ start++;
+ continue;
+ }
+- start = idx + 1;
+
+- strncpy(tmp_buff, (const char *)filename, (idx - filename));
+- tmp_buff[(idx - filename)] = '\0';
++ memcpy(tmp_buff + (start - filename), (const char *)start, (idx - start));
++ tmp_buff[idx - filename] = '\0';
+
+ #ifdef DEBUG
+ printf("checking the existance of %s\n", tmp_buff);
+ #endif
+- if(strcmp(tmp_buff, "..") == 0){
++ if(idx - start == 2 && memcmp(start, "..", 2) == 0){
+ --depth;
+ if (depth < 0){
+ fprintf(stderr, "Traversal to parent directories during unpacking!\n");
+ exit(EXIT_FAILURE);
+ }
+- } else if (strcmp(tmp_buff, ".") != 0)
++ } else if (idx - start != 1 || *start != '.')
+ ++depth;
++
++ start = idx + 1;
++
+ if(stat(tmp_buff, &sbuf) < 0){
+ if(errno != ENOENT)
+ exit_on_error("stat");
+@@ -1765,6 +1778,7 @@ int extract_jar(int fd, const char **fil
+ #ifdef DEBUG
+ printf("Directory exists\n");
+ #endif
++ tmp_buff[idx - filename] = '/';
+ continue;
+ }else {
+ fprintf(stderr, "Hmmm.. %s exists but isn't a directory!\n",
+@@ -1781,10 +1795,11 @@ int extract_jar(int fd, const char **fil
+ if(verbose && handle)
+ printf("%10s: %s/\n", "created", tmp_buff);
+
++ tmp_buff[idx - filename] = '/';
+ }
+
+ /* only a directory */
+- if(strlen((const char *)start) == 0)
++ if(*start == '\0')
+ dir = TRUE;
+
+ #ifdef DEBUG
+@@ -1792,7 +1807,7 @@ int extract_jar(int fd, const char **fil
+ #endif
+
+ /* If the entry was just a directory, don't write to file, etc */
+- if(strlen((const char *)start) == 0)
++ if(*start == '\0')
+ f_fd = -1;
+
+ free(tmp_buff);
+@@ -1876,7 +1891,8 @@ int extract_jar(int fd, const char **fil
+ exit(EXIT_FAILURE);
+ }
+
+- close(f_fd);
++ if (f_fd != -1)
++ close(f_fd);
+
+ if(verbose && dir == FALSE && handle)
+ printf("%10s: %s\n",
diff --git a/development/gcc5/fastjar-patches/1004-fastjar-man.patch b/development/gcc5/fastjar-patches/1004-fastjar-man.patch
new file mode 100644
index 0000000000..34bf704dbb
--- /dev/null
+++ b/development/gcc5/fastjar-patches/1004-fastjar-man.patch
@@ -0,0 +1,27 @@
+2010-03-24 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * Makefile.am (POD2MAN): Provide --date from ChangeLog.
+ * Makefile.in: Regenerate.
+
+--- fastjar-0.97/Makefile.am.jj 2008-10-16 04:24:55.000000000 -0400
++++ fastjar-0.97/Makefile.am 2010-06-21 09:29:41.021398000 -0400
+@@ -39,7 +39,7 @@ EXTRA_DIST = \
+ texi2pod.pl
+
+ TEXI2POD = perl $(srcdir)/texi2pod.pl
+-POD2MAN = pod2man --center="GNU" --release=@VERSION@
++POD2MAN = pod2man --center="GNU" --release=@VERSION@ --date=$(shell sed -n '1s/ .*//p' <$(srcdir)/ChangeLog)
+
+ .pod.1:
+ -($(POD2MAN) --section=1 $< > $(@).T$$$$ && \
+--- fastjar-0.97/Makefile.in.jj 2008-10-16 04:15:16.000000000 -0400
++++ fastjar-0.97/Makefile.in 2010-06-21 09:30:15.882810000 -0400
+@@ -515,7 +515,7 @@ EXTRA_DIST = \
+ texi2pod.pl
+
+ TEXI2POD = perl $(srcdir)/texi2pod.pl
+-POD2MAN = pod2man --center="GNU" --release=@VERSION@
++POD2MAN = pod2man --center="GNU" --release=@VERSION@ --date=$(shell sed -n '1s/ .*//p' <$(srcdir)/ChangeLog)
+
+ #SPLINT_FLAGS=-I . -I $(srcdir)/lib -I $(srcdir) -DHAVE_CONFIG_H +posixlib +weak
+ SPLINT_FLAGS = -I . -I $(srcdir)/lib -I $(srcdir) -DHAVE_CONFIG_H -DPRIx32= -warnposix +weak
diff --git a/development/gcc5/gcc5.SlackBuild b/development/gcc5/gcc5.SlackBuild
new file mode 100644
index 0000000000..f8181187cb
--- /dev/null
+++ b/development/gcc5/gcc5.SlackBuild
@@ -0,0 +1,583 @@
+#!/bin/bash
+# GCC package build script (written by volkerdi@slackware.com)
+#
+# Copyright 2003, 2004 Slackware Linux, Inc., Concord, California, USA
+# Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Patrick J. Volkerding, Sebeka, MN, USA
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+# Modified 2011 by Eric Hameleers <alien at slackware.com> for OpenJDK.
+# Modified 2017, 2018 by Eric Hameleers <alien at slackware.com> for gcc5.
+
+# Some notes, Fri May 16 12:31:32 PDT 2003:
+#
+# Why i486 and not i386? Because the shared C++ libraries in gcc-3.2.x will
+# require 486 opcodes even when a 386 target is used (so we already weren't
+# compatible with the i386 for Slackware 9.0, didn't notice, and nobody
+# complained :-). gcc-3.3 fixes this issue and allows you to build a 386
+# compiler, but the fix is done in a way that produces binaries that are not
+# compatible with gcc-3.2.x compiled binaries. To retain compatibility with
+# Slackware 9.0, we'll have to use i486 (or better) as the compiler target
+# for gcc-3.3.
+#
+# It's time to say goodbye to i386 support in Slackware. I've surveyed 386
+# usage online, and the most common thing I see people say when someone asks
+# about running Linux on a 386 is to "run Slackware", but then they also
+# usually go on to say "be sure to get an OLD version, like 4.0, before glibc,
+# because it'll be more efficient." Now, if that's the general advice, then
+# I see no reason to continue 386 support in the latest Slackware (and indeed
+# it's no longer easily possible).
+
+# Some more notes, Mon Aug 3 19:49:51 UTC 2015:
+#
+# Changing to -march=i586 for 32-bit x86 as several things (Mesa being one of
+# them) no longer work if constrained to -march=i486. We're not going to use
+# -march=i686 since the only additional opcode is CMOV, which is actually less
+# efficient on modern CPUs running in 32-bit mode than the alternate i586
+# instructions. No need to throw i586 CPUs under the bus (yet).
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=gcc5
+VERSION=${VERSION:-5.5.0}
+MAJVER=$(echo ${VERSION} |cut -d. -f1)
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+# Automatically determine the architecture we're building on:
+if [ -z "$ARCH" ]; then
+ case "$(uname -m)" in
+ i?86) ARCH=i586 ;;
+ arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
+ # Unless $ARCH is already set, use uname -m for all other archs:
+ *) ARCH=$(uname -m) ;;
+ esac
+ export ARCH
+fi
+
+if [ "$ARCH" = "x86_64" ]; then
+ if [ -f /usr/lib/libc.a ]; then
+ # If we find a 32bit C library on 64bit Slackware, assume multilib:
+ GCC_ARCHOPTS="--enable-multilib"
+ MULTILIB="YES"
+ else
+ GCC_ARCHOPTS="--disable-multilib"
+ MULTILIB="NO"
+ fi
+else
+ GCC_ARCHOPTS="--with-arch=$ARCH"
+ MULTILIB="NO"
+fi
+
+# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
+# the name of the created package would be, and then exit. This information
+# could be useful to other scripts.
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+ if [ ${MULTILIB} = "YES" ]; then
+ echo "$PRGNAM-${VERSION}_multilib-$ARCH-$BUILD$TAG.$PKGTYPE"
+ else
+ echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+ fi
+ exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i386" ]; then
+ SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=i386
+elif [ "$ARCH" = "i486" ]; then
+ SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=i386
+elif [ "$ARCH" = "i586" ]; then
+ SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=i386
+elif [ "$ARCH" = "i686" ]; then
+ SLKCFLAGS="-O2 -march=i686"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=i386
+elif [ "$ARCH" = "s390" ]; then
+ SLKCFLAGS="-O2"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=s390
+elif [ "$ARCH" = "x86_64" ]; then
+ SLKCFLAGS="-O2 -fPIC"
+ SLKLDFLAGS="-L/usr/lib64"
+ LIBDIRSUFFIX="64"
+ LIB_ARCH=amd64
+elif [ "$ARCH" = "armv7hl" ]; then
+ SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=armv7hl
+else
+ SLKCFLAGS="-O2"
+ SLKLDFLAGS=""
+ LIBDIRSUFFIX=""
+ LIB_ARCH=$ARCH
+fi
+
+# What do we want to build
+LANGS=${LANGS:-'c,c++,java'}
+
+echo "Building these compilers: $LANGS"
+
+case "$ARCH" in
+ arm*) TARGET=$ARCH-slackware-linux-gnueabi ;;
+ *) TARGET=$ARCH-slackware-linux ;;
+esac
+
+# Clear the build locations:
+rm -fr $TMP/fastjar-* $TMP/gcc-$VERSION $TMP/gcc.build.lnx $TMP/gcc.build.log $TMP/package-$PRGNAM
+
+mkdir -p $PKG/usr/doc/gcc-$VERSION
+
+# Insert package description:
+mkdir -p $PKG/install
+if [ ${MULTILIB} = "YES" ]; then
+ SLDESC=" The compilers support multilib."
+else
+ SLDESC=""
+fi
+cat $CWD/slack-desc.gcc5 | sed -e "s/@MULTILIB@/${SLDESC}/" \
+ > $PKG/install/slack-desc
+
+# Unpack the gcc sources:
+cd $TMP
+tar xvf $CWD/gcc-$VERSION.tar.?z || exit 1
+
+# Patches based inside the gcc directory go here:
+#( cd gcc-$VERSION/gcc
+# #cat $CWD/patches/gcc.66782.diff | patch -p0 --verbose || exit 1
+#) || exit 1
+
+# Copy ecj.jar into the TLD of the source. Needed for java compiler.
+# This can be retrieved from ftp://sourceware.org/pub/java
+cp $CWD/ecj-4.9.jar gcc-$VERSION/ecj.jar
+
+# Use an antlr runtime to compile javadoc.
+# The runtime can be obtained from:
+#https://oss.sonatype.org/content/repositories/releases/org/antlr/antlr-runtime/
+ANTLJAR=$(echo $CWD/antlr-*.jar | tail -1)
+
+# install docs
+( cd gcc-$VERSION
+ # Smite the fixincludes:
+ cat $CWD/patches/gcc-no_fixincludes.diff | patch -p1 --verbose --backup --suffix=.orig || exit 1
+
+ # Add retpoline support:
+ cat $CWD/patches/0001-i386-Move-struct-ix86_frame-to-machine_function.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0003-i386-More-use-reference-of-struct-ix86_frame-to-avoi.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0004-i386-Don-t-use-reference-of-struct-ix86_frame.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0005-x86-Add-mindirect-branch-doc.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0005-x86-Add-mindirect-branch.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0006-x86-Add-mfunction-return-doc.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0006-x86-Add-mfunction-return.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0007-x86-Add-mindirect-branch-register-doc.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0007-x86-Add-mindirect-branch-register.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0008-x86-Add-V-register-operand-modifier-doc.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0008-x86-Add-V-register-operand-modifier.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-.diff | patch -p2 --verbose || exit 1
+ cat $CWD/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-doc.diff | patch -p2 --verbose || exit 1
+
+ # Fix build with glibc 2.28, which no longer makes available header file <sys/ustat.h>
+ cat $CWD/patches/glibc2.28-ustat.diff | patch -p0 --verbose || exit 1
+
+ # Fix perms/owners
+ chown -R root:root .
+ find . -perm 777 -exec chmod 755 {} \;
+ find . -perm 775 -exec chmod 755 {} \;
+ find . -perm 754 -exec chmod 755 {} \;
+ find . -perm 664 -exec chmod 644 {} \;
+ mkdir -p $PKG/usr/doc/gcc-$VERSION
+ cp -a \
+ COPYING* ChangeLog* FAQ INSTALL \
+ LAST_UPDATED MAINTAINERS NEWS \
+ README* *.html \
+ $PKG/usr/doc/gcc-$VERSION
+
+ # We will keep part of these, but they are really big...
+ if [ -r ChangeLog ]; then
+ DOCSDIR=$(echo $PKG/usr/doc/gcc-$VERSION)
+ cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
+ touch -r ChangeLog $DOCSDIR/ChangeLog
+ fi
+ if [ -r NEWS ]; then
+ DOCSDIR=$(echo $PKG/usr/doc/gcc-$VERSION)
+ cat NEWS | head -n 1000 > $DOCSDIR/NEWS
+ touch -r NEWS $DOCSDIR/NEWS
+ fi
+
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/gcc
+ ( cd gcc
+ cp -a \
+ ABOUT* COPYING* DATESTAMP DEV-PHASE LANG* ONEWS README* SERVICE \
+ $PKG/usr/doc/gcc-$VERSION/gcc
+
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/gcc/java
+ ( cd java
+ cp -a \
+ ChangeLog.tree-ssa \
+ $PKG/usr/doc/gcc-${VERSION}/gcc/java
+ if [ -r ChangeLog ]; then
+ cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/gcc/java/ChangeLog
+ touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/gcc/java/ChangeLog
+ fi
+ )
+
+ ) || exit 1
+
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/libffi
+ ( cd libffi
+ cp -a \
+ ChangeLog.libgcj ChangeLog.v1 \
+ LICENSE* README* \
+ $PKG/usr/doc/gcc-${VERSION}/libffi
+ if [ -r ChangeLog ]; then
+ cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libffi/ChangeLog
+ touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libffi/ChangeLog
+ fi
+ )
+
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/libjava
+ ( cd libjava
+ cp -a \
+ COPYING* HACKING LIBGCJ_LICENSE \
+ NEWS README* THANKS \
+ $PKG/usr/doc/gcc-${VERSION}/libjava
+ if [ -r ChangeLog ]; then
+ cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libjava/ChangeLog
+ touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libjava/ChangeLog
+ fi
+ )
+
+ if [ -d libmudflap ]; then
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/libmudflap
+ ( cd libmudflap
+ if [ -r ChangeLog ]; then
+ cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libmudflap/ChangeLog
+ touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libmudflap/ChangeLog
+ fi
+ )
+ fi
+
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/libgomp
+ ( cd libgomp
+ if [ -r ChangeLog ]; then
+ cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libgomp/ChangeLog
+ touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libgomp/ChangeLog
+ fi
+ )
+
+ mkdir -p $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3
+ ( cd libstdc++-v3
+ cp -a \
+ README* \
+ doc/html/faq.html \
+ $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3
+ if [ -r ChangeLog ]; then
+ cat ChangeLog | head -n 1000 > $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3/ChangeLog
+ touch -r ChangeLog $PKG/usr/doc/gcc-${VERSION}/libstdc++-v3/ChangeLog
+ fi
+ )
+)
+
+# Add fastjar to the gcc5 package:
+( cd $TMP
+ FASTJARVER=$(echo $CWD/fastjar-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)
+ echo
+ echo "Building fastjar-$FASTJARVER first"
+ echo
+ rm -rf fastjar-$FASTJARVER
+ tar xvf $CWD/fastjar-$FASTJARVER.tar.?z* || exit 1
+ cd fastjar-$FASTJARVER || exit 1
+ chown -R root:root .
+ find . \
+ \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
+ -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
+ -exec chmod 644 {} \;
+ for patch in $CWD/fastjar-patches/* ; do
+ cat $patch | patch -p1 --verbose || exit 1
+ done
+ LDFLAGS="$SLKLDFLAGS" \
+ CFLAGS="$SLKCFLAGS" \
+ CXXFLAGS="$SLKCFLAGS" \
+ ./configure \
+ --prefix=/usr \
+ --libdir=/usr/lib$LIBDIRSUFFIX \
+ --mandir=/usr/man \
+ --infodir=/usr/info \
+ --build=$TARGET
+ make || exit 1
+ make install DESTDIR=$PKG || exit 1
+ mkdir -p $PKG/usr/doc/fastjar-$FASTJARVER
+ cp -a \
+ AUTHORS CHANGES COPYING* INSTALL NEWS README* TODO \
+ $PKG/usr/doc/fastjar-$FASTJARVER
+ # If there's a ChangeLog, installing at least part of the recent history
+ # is useful, but don't let it get totally out of control:
+ if [ -r ChangeLog ]; then
+ DOCSDIR=$(echo $PKG/usr/doc/fastjar-$FASTJARVER)
+ cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
+ touch -r ChangeLog $DOCSDIR/ChangeLog
+ fi
+ find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
+ | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
+ # Compress and if needed symlink the man pages:
+ if [ -d $PKG/usr/man ]; then
+ ( cd $PKG/usr/man
+ for manpagedir in $(find . -type d -name "man*") ; do
+ ( cd $manpagedir
+ for eachpage in $( find . -type l -maxdepth 1) ; do
+ ln -s $( readlink $eachpage ).gz $eachpage.gz
+ rm $eachpage
+ done
+ gzip -9 *.?
+ )
+ done
+ )
+ fi
+ # Compress info files, if any:
+ if [ -d $PKG/usr/info ]; then
+ ( cd $PKG/usr/info
+ rm -f dir
+ gzip -9 *
+ )
+ fi
+ echo
+) || exit 1
+
+# build gcc
+( mkdir gcc.build.lnx;
+ cd gcc.build.lnx;
+
+ # I think it's incorrect to include this option (as it'll end up set
+ # to i586 on x86 platforms), and we want to tune the binary structure
+ # for i686, as that's where almost all of the optimization speedups
+ # are to be found.
+ # Correct me if my take on this is wrong.
+ # --with-cpu=$ARCH
+
+ # NOTE: For Slackware 15.0, look into removing --with-default-libstdcxx-abi=gcc4-compatible,
+ # which will then require rebuilding all C++ libraries. That is, if there's any benefit.
+
+ LDFLAGS="$SLKLDFLAGS" \
+ CFLAGS="$SLKCFLAGS" \
+ CXXFLAGS="$SLKCFLAGS" \
+ ../gcc-$VERSION/configure \
+ --prefix=/usr \
+ --libdir=/usr/lib$LIBDIRSUFFIX \
+ --mandir=/usr/man \
+ --infodir=/usr/info \
+ --enable-shared \
+ --enable-bootstrap \
+ --enable-languages=${LANGS} \
+ --enable-threads=posix \
+ --enable-checking=release \
+ --enable-objc-gc \
+ --with-system-zlib \
+ --with-python-dir=/lib$LIBDIRSUFFIX/python2.7/site-packages \
+ --enable-libstdcxx-dual-abi \
+ --with-default-libstdcxx-abi=gcc4-compatible \
+ --disable-libunwind-exceptions \
+ --enable-__cxa_atexit \
+ --enable-libssp \
+ --enable-lto \
+ --disable-install-libiberty \
+ --with-gnu-ld \
+ --without-isl \
+ --verbose \
+ --enable-java-home \
+ --with-java-home=/usr/lib$LIBDIRSUFFIX/jvm/jre \
+ --with-jvm-root-dir=/usr/lib$LIBDIRSUFFIX/jvm \
+ --with-jvm-jar-dir=/usr/lib$LIBDIRSUFFIX/jvm/jvm-exports \
+ --with-arch-directory=$LIB_ARCH \
+ --with-antlr-jar=$ANTLJAR \
+ --program-suffix=-${MAJVER} \
+ --enable-version-specific-runtime-libs \
+ $GCC_ARCHOPTS \
+ --target=${TARGET} \
+ --build=${TARGET} \
+ --host=${TARGET} || exit 1
+ #--enable-java-awt=gtk \
+ #--disable-gtktest \
+
+ # Start the build:
+
+ # Include all debugging info (for now):
+ make bootstrap
+ make info
+ make install DESTDIR=$PKG
+
+# KLUDGE ALERT
+# These *gdb.py files are causing ldconfig to complain, so they are going
+# to be REMOVED for now... at some point, they might be moved somewhere
+# else, in which case things should Just Work(tm). Keep an eye on it.
+rm -f $PKG/usr/lib*/*gdb.py
+
+# Be sure the "specs" file is installed.
+if [ ! -r $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/specs ]; then
+ cat stage1-gcc/specs > $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/specs
+fi
+
+if [ ${MULTILIB} = "NO" ]; then
+ # Make our 64bit gcc look for 32bit gcc binaries in ./32 subdirectory:
+ # (only needed if gcc was compiled with disable-multilib)
+ if [ "$ARCH" = "x86_64" ]; then
+ sed -i 's#;.\(:../lib !m64 m32;\)$#;32\1#' \
+ $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/specs
+ fi
+fi
+
+make -i install-info DESTDIR=$PKG
+
+# Move potentially conflicting stuff to version specific subdirectory:
+if [ -d $PKG/usr/lib${LIBDIRSUFFIX} ]; then
+ mv $PKG/usr/lib${LIBDIRSUFFIX}/lib* $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/
+fi
+if [ -d $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/lib${LIBDIRSUFFIX}/ ]; then
+ mv $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/lib${LIBDIRSUFFIX}/lib* $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/
+fi
+chmod 755 $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/libgcc_s.so.1
+if [ ${MULTILIB} = "YES" ]; then
+ if [ -d $PKG/usr/lib ]; then
+ mv $PKG/usr/lib/lib* $PKG/usr/lib/gcc/${TARGET}/${VERSION}/
+ fi
+ if [ -d $PKG/usr/lib/gcc/${TARGET}/lib/ ]; then
+ mv $PKG/usr/lib/gcc/${TARGET}/lib/lib* $PKG/usr/lib/gcc/${TARGET}/${VERSION}/
+ fi
+ chmod 755 $PKG/usr/lib/gcc/${TARGET}/${VERSION}/libgcc_s.so.1
+fi
+
+# The (huge) static GNU java libraries are not packaged. In nearly all
+# cases one or more dependencies will not be available as static anyway.
+rm -f $PKG/usr/lib${LIBDIRSUFFIX}/libgcj.a
+rm -f $PKG/usr/lib${LIBDIRSUFFIX}/libgcj-tools.a
+rm -f $PKG/usr/lib/libgcj.a
+rm -f $PKG/usr/lib/libgcj-tools.a
+
+# Fix stuff up:
+( cd $PKG/usr/info
+ rm dir
+ for eachinfo in *.info ; do
+ mv $eachinfo $(basename $eachinfo .info)-${MAJVER}.info
+ done
+ gzip -9 *
+)
+
+( cd $PKG/usr/bin
+ ln -sf g++-${MAJVER} c++-${MAJVER}
+ ln -sf gcc-${MAJVER} cc-${MAJVER}
+ # Improved versions of the Slackware c?9 scripts,
+ # it is safe to overwrite the originals:
+ cat $CWD/c89.sh > c89
+ cat $CWD/c99.sh > c99
+ chmod 755 c89 c99
+)
+
+( cd $PKG/usr/man
+ rm -r man7 # Part of the system gcc package
+ gzip -9 */*
+ cd man1
+ ln -sf g++-${MAJVER}.1.gz c++-${MAJVER}.1.gz
+ ln -sf gcc-${MAJVER}.1.gz cc-${MAJVER}.1.gz
+)
+
+# keep a log
+) 2>&1 | tee $TMP/gcc.build.log
+
+# Add profile scripts (non-executable by default) to make it easier
+# to set the environment for compiling with gcc5:
+mkdir -p $PKG/etc/profile.d
+cat $CWD/profile.d/gcc5.sh > $PKG/etc/profile.d/gcc5.sh
+cat $CWD/profile.d/gcc5.csh > $PKG/etc/profile.d/gcc5.csh
+chmod 644 $PKG/etc/profile.d/*
+
+# The ecj wrapper script:
+cat $CWD/ecj.sh | sed -e "s,@JAVADIR@,/usr/share/java," > $PKG/usr/bin/ecj
+chmod 755 $PKG/usr/bin/ecj
+# Some compatibility links.
+for JAVAPROG in gcj gcjh gcj-dbtool gjar gjarsigner gjavah ; do
+ ln -s ${JAVAPROG}-${MAJVER} $PKG/usr/bin/${JAVAPROG}
+done
+( cd $PKG
+ for JAVALIB in usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/libgcj* ; do
+ ln -s /${JAVALIB} $PKG/usr/lib${LIBDIRSUFFIX}/
+ done
+)
+# And add the missing javac symlink:
+ln -s ../../../bin/ecj $PKG/usr/lib$LIBDIRSUFFIX/jvm/bin/javac
+# Don't package libffi stuff anymore. GCC will link the internal version
+# statically, and we'll need a newer one elsewhere.
+find . -name "ffi*.h" | xargs rm -f
+find . -name "libffi*" | xargs rm -f
+rm -f usr/man/man3/ffi*
+rm -f usr/info/libffi*
+# Install a proper pkgconfig file for libgcj:
+rm $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/pkgconfig/libgcj*pc
+rm $PKG/usr/lib${LIBDIRSUFFIX}/gcc/${TARGET}/${VERSION}/32/pkgconfig/libgcj*pc
+mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig
+cat $CWD/libgcj-5.pc \
+ | sed -e "s,@LIBDIRSUFFIX@,${LIBDIRSUFFIX}," \
+ | sed -e "s,@TARGET@,${TARGET}," \
+ | sed -e "s,@VERSION@,${VERSION}," \
+ > $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/libgcj-5.pc
+
+# Filter all .la files (thanks much to Mark Post for the sed script):
+( cd $PKG
+ for file in $(find . -type f -name "*.la") ; do
+ cat $file | sed -e 's%-L'${TMP}'[[:graph:]]* % %g' > $TMP/tmp-la-file
+ cat $TMP/tmp-la-file > $file
+ done
+ rm $TMP/tmp-la-file
+)
+
+## Strip bloated binaries and libraries:
+( cd $PKG
+ find . -name "lib*so*" -exec strip --strip-unneeded "{}" \;
+ find . -name "lib*a" -exec strip -g "{}" \;
+ strip --strip-unneeded usr/bin/* 2> /dev/null
+ find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
+ find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
+)
+
+# Remove localizations overlapping with Slackware's gcc
+rm -rf $PKG/usr/share/locale
+
+( cd $PKG
+ if [ ${MULTILIB} = "YES" ]; then
+ /sbin/makepkg -l y -c n $OUTPUT/${PRGNAM}-${VERSION}_multilib-$ARCH-$BUILD$TAG.$PKGTYPE
+ else
+ /sbin/makepkg -l y -c n $OUTPUT/${PRGNAM}-${VERSION}-$ARCH-$BUILD$TAG.$PKGTYPE
+ fi
+)
diff --git a/development/gcc5/gcc5.info b/development/gcc5/gcc5.info
new file mode 100644
index 0000000000..cb7d761a98
--- /dev/null
+++ b/development/gcc5/gcc5.info
@@ -0,0 +1,17 @@
+PRGNAM="gcc5"
+VERSION="5.5.0"
+HOMEPAGE="https://gcc.gnu.org/"
+DOWNLOAD="https://ftp.gnu.org/gnu/gcc/gcc-5.5.0/gcc-5.5.0.tar.xz \
+ http://www.antlr3.org/download/antlr-runtime-3.4.jar \
+ https://sourceware.org/pub/java/ecj-4.9.jar \
+ https://download.savannah.gnu.org/releases/fastjar/fastjar-0.97.tar.gz"
+MD5SUM="0f70424213b4a1113c04ba66ddda0c1f \
+ 0e0318be407e51fdf7ba6777eabfdf73 \
+ 7339f199ba11c941890031fd9981d7be \
+ 2659f09c2e43ef8b7d4406321753f1b2"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Eric Hameleers"
+EMAIL="alien@slackware.com"
+
diff --git a/development/gcc5/libgcj-5.pc b/development/gcc5/libgcj-5.pc
new file mode 100644
index 0000000000..e2eb293209
--- /dev/null
+++ b/development/gcc5/libgcj-5.pc
@@ -0,0 +1,10 @@
+prefix=/usr
+exec_prefix=${prefix}
+libdir=/usr/lib@LIBDIRSUFFIX@/gcc/@TARGET@/@VERSION@
+includedir=$(libdir)/include/
+
+Name: libgcj
+Description: libgcj
+Version: @VERSION@
+Libs: -L${libdir} -lgcj
+Cflags: -I${includedir}
diff --git a/development/gcc5/patches/0001-i386-Move-struct-ix86_frame-to-machine_function.diff b/development/gcc5/patches/0001-i386-Move-struct-ix86_frame-to-machine_function.diff
new file mode 100644
index 0000000000..413d75697f
--- /dev/null
+++ b/development/gcc5/patches/0001-i386-Move-struct-ix86_frame-to-machine_function.diff
@@ -0,0 +1,239 @@
+From 11a3b9034935080b9996caf07fca6353309006f1 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 15 Jan 2018 11:27:24 +0000
+Subject: [PATCH 1/9] i386: Move struct ix86_frame to machine_function
+
+Make ix86_frame available to i386 code generation. This is needed to
+backport the patch set of -mindirect-branch= to mitigate variant #2 of
+the speculative execution vulnerabilities on x86 processors identified
+by CVE-2017-5715, aka Spectre.
+
+ Backport from mainline
+ * config/i386/i386.c (ix86_frame): Moved to ...
+ * config/i386/i386.h (ix86_frame): Here.
+ (machine_function): Add frame.
+ * config/i386/i386.c (ix86_compute_frame_layout): Repace the
+ frame argument with &cfun->machine->frame.
+ (ix86_can_use_return_insn_p): Don't pass &frame to
+ ix86_compute_frame_layout. Copy frame from cfun->machine->frame.
+ (ix86_can_eliminate): Likewise.
+ (ix86_expand_prologue): Likewise.
+ (ix86_expand_epilogue): Likewise.
+ (ix86_expand_split_stack_prologue): Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256691 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ src/gcc/config/i386/i386.c | 68 ++++++++-------------------------------------
+ src/gcc/config/i386/i386.h | 53 ++++++++++++++++++++++++++++++++++-
+ 2 files changed, 65 insertions(+), 56 deletions(-)
+
+Index: b/src/gcc/config/i386/i386.c
+===================================================================
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -2306,53 +2306,6 @@ struct GTY(()) stack_local_entry {
+ struct stack_local_entry *next;
+ };
+
+-/* Structure describing stack frame layout.
+- Stack grows downward:
+-
+- [arguments]
+- <- ARG_POINTER
+- saved pc
+-
+- saved static chain if ix86_static_chain_on_stack
+-
+- saved frame pointer if frame_pointer_needed
+- <- HARD_FRAME_POINTER
+- [saved regs]
+- <- regs_save_offset
+- [padding0]
+-
+- [saved SSE regs]
+- <- sse_regs_save_offset
+- [padding1] |
+- | <- FRAME_POINTER
+- [va_arg registers] |
+- |
+- [frame] |
+- |
+- [padding2] | = to_allocate
+- <- STACK_POINTER
+- */
+-struct ix86_frame
+-{
+- int nsseregs;
+- int nregs;
+- int va_arg_size;
+- int red_zone_size;
+- int outgoing_arguments_size;
+-
+- /* The offsets relative to ARG_POINTER. */
+- HOST_WIDE_INT frame_pointer_offset;
+- HOST_WIDE_INT hard_frame_pointer_offset;
+- HOST_WIDE_INT stack_pointer_offset;
+- HOST_WIDE_INT hfp_save_offset;
+- HOST_WIDE_INT reg_save_offset;
+- HOST_WIDE_INT sse_reg_save_offset;
+-
+- /* When save_regs_using_mov is set, emit prologue using
+- move instead of push instructions. */
+- bool save_regs_using_mov;
+-};
+-
+ /* Which cpu are we scheduling for. */
+ enum attr_cpu ix86_schedule;
+
+@@ -2443,7 +2396,7 @@ static unsigned int ix86_function_arg_bo
+ const_tree);
+ static rtx ix86_static_chain (const_tree, bool);
+ static int ix86_function_regparm (const_tree, const_tree);
+-static void ix86_compute_frame_layout (struct ix86_frame *);
++static void ix86_compute_frame_layout (void);
+ static bool ix86_expand_vector_init_one_nonzero (bool, machine_mode,
+ rtx, rtx, int);
+ static void ix86_add_new_builtins (HOST_WIDE_INT);
+@@ -9664,7 +9617,8 @@ ix86_can_use_return_insn_p (void)
+ if (crtl->args.pops_args && crtl->args.size >= 32768)
+ return 0;
+
+- ix86_compute_frame_layout (&frame);
++ ix86_compute_frame_layout ();
++ frame = cfun->machine->frame;
+ return (frame.stack_pointer_offset == UNITS_PER_WORD
+ && (frame.nregs + frame.nsseregs) == 0);
+ }
+@@ -10073,8 +10027,8 @@ ix86_can_eliminate (const int from, cons
+ HOST_WIDE_INT
+ ix86_initial_elimination_offset (int from, int to)
+ {
+- struct ix86_frame frame;
+- ix86_compute_frame_layout (&frame);
++ ix86_compute_frame_layout ();
++ struct ix86_frame frame = cfun->machine->frame;
+
+ if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM)
+ return frame.hard_frame_pointer_offset;
+@@ -10113,8 +10067,9 @@ ix86_builtin_setjmp_frame_value (void)
+ /* Fill structure ix86_frame about frame of currently computed function. */
+
+ static void
+-ix86_compute_frame_layout (struct ix86_frame *frame)
++ix86_compute_frame_layout (void)
+ {
++ struct ix86_frame *frame = &cfun->machine->frame;
+ unsigned HOST_WIDE_INT stack_alignment_needed;
+ HOST_WIDE_INT offset;
+ unsigned HOST_WIDE_INT preferred_alignment;
+@@ -11417,7 +11372,8 @@ ix86_expand_prologue (void)
+ m->fs.sp_offset = INCOMING_FRAME_SP_OFFSET;
+ m->fs.sp_valid = true;
+
+- ix86_compute_frame_layout (&frame);
++ ix86_compute_frame_layout ();
++ frame = m->frame;
+
+ if (!TARGET_64BIT && ix86_function_ms_hook_prologue (current_function_decl))
+ {
+@@ -12083,7 +12039,8 @@ ix86_expand_epilogue (int style)
+ bool using_drap;
+
+ ix86_finalize_stack_realign_flags ();
+- ix86_compute_frame_layout (&frame);
++ ix86_compute_frame_layout ();
++ frame = m->frame;
+
+ m->fs.sp_valid = (!frame_pointer_needed
+ || (crtl->sp_is_unchanging
+@@ -12546,7 +12503,8 @@ ix86_expand_split_stack_prologue (void)
+ gcc_assert (flag_split_stack && reload_completed);
+
+ ix86_finalize_stack_realign_flags ();
+- ix86_compute_frame_layout (&frame);
++ ix86_compute_frame_layout ();
++ frame = cfun->machine->frame;
+ allocate = frame.stack_pointer_offset - INCOMING_FRAME_SP_OFFSET;
+
+ /* This is the label we will branch to if we have enough stack
+Index: b/src/gcc/config/i386/i386.h
+===================================================================
+--- a/src/gcc/config/i386/i386.h
++++ b/src/gcc/config/i386/i386.h
+@@ -2409,9 +2409,56 @@ enum avx_u128_state
+
+ #define FASTCALL_PREFIX '@'
+
++#ifndef USED_FOR_TARGET
++/* Structure describing stack frame layout.
++ Stack grows downward:
++
++ [arguments]
++ <- ARG_POINTER
++ saved pc
++
++ saved static chain if ix86_static_chain_on_stack
++
++ saved frame pointer if frame_pointer_needed
++ <- HARD_FRAME_POINTER
++ [saved regs]
++ <- regs_save_offset
++ [padding0]
++
++ [saved SSE regs]
++ <- sse_regs_save_offset
++ [padding1] |
++ | <- FRAME_POINTER
++ [va_arg registers] |
++ |
++ [frame] |
++ |
++ [padding2] | = to_allocate
++ <- STACK_POINTER
++ */
++struct GTY(()) ix86_frame
++{
++ int nsseregs;
++ int nregs;
++ int va_arg_size;
++ int red_zone_size;
++ int outgoing_arguments_size;
++
++ /* The offsets relative to ARG_POINTER. */
++ HOST_WIDE_INT frame_pointer_offset;
++ HOST_WIDE_INT hard_frame_pointer_offset;
++ HOST_WIDE_INT stack_pointer_offset;
++ HOST_WIDE_INT hfp_save_offset;
++ HOST_WIDE_INT reg_save_offset;
++ HOST_WIDE_INT sse_reg_save_offset;
++
++ /* When save_regs_using_mov is set, emit prologue using
++ move instead of push instructions. */
++ bool save_regs_using_mov;
++};
++
+ /* Machine specific frame tracking during prologue/epilogue generation. */
+
+-#ifndef USED_FOR_TARGET
+ struct GTY(()) machine_frame_state
+ {
+ /* This pair tracks the currently active CFA as reg+offset. When reg
+@@ -2457,6 +2504,9 @@ struct GTY(()) machine_function {
+ int varargs_fpr_size;
+ int optimize_mode_switching[MAX_386_ENTITIES];
+
++ /* Cached initial frame layout for the current function. */
++ struct ix86_frame frame;
++
+ /* Number of saved registers USE_FAST_PROLOGUE_EPILOGUE
+ has been computed for. */
+ int use_fast_prologue_epilogue_nregs;
+@@ -2524,6 +2574,7 @@ struct GTY(()) machine_function {
+ #define ix86_current_function_calls_tls_descriptor \
+ (ix86_tls_descriptor_calls_expanded_in_cfun && df_regs_ever_live_p (SP_REG))
+ #define ix86_static_chain_on_stack (cfun->machine->static_chain_on_stack)
++#define ix86_red_zone_size (cfun->machine->frame.red_zone_size)
+
+ /* Control behavior of x86_file_start. */
+ #define X86_FILE_START_VERSION_DIRECTIVE false
diff --git a/development/gcc5/patches/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff b/development/gcc5/patches/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff
new file mode 100644
index 0000000000..7b928df765
--- /dev/null
+++ b/development/gcc5/patches/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff
@@ -0,0 +1,72 @@
+From 18202ba32cb8de22fc43a5839235a751d0f5c4d9 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 15 Jan 2018 11:28:44 +0000
+Subject: [PATCH 2/9] i386: Use reference of struct ix86_frame to avoid copy
+
+When there is no need to make a copy of ix86_frame, we can use reference
+of struct ix86_frame to avoid copy.
+
+ Backport from mainline
+ * config/i386/i386.c (ix86_can_use_return_insn_p): Use reference
+ of struct ix86_frame.
+ (ix86_initial_elimination_offset): Likewise.
+ (ix86_expand_split_stack_prologue): Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256692 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/config/i386/i386.c | 9 +++------
+ gcc/testsuite/ChangeLog | 8 ++++++++
+ 2 files changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
+index 8133372..397ef7c 100644
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -11843,8 +11843,6 @@ symbolic_reference_mentioned_p (rtx op)
+ bool
+ ix86_can_use_return_insn_p (void)
+ {
+- struct ix86_frame frame;
+-
+ if (! reload_completed || frame_pointer_needed)
+ return 0;
+
+@@ -11857,7 +11855,7 @@ ix86_can_use_return_insn_p (void)
+ return 0;
+
+ ix86_compute_frame_layout ();
+- frame = cfun->machine->frame;
++ struct ix86_frame &frame = cfun->machine->frame;
+ return (frame.stack_pointer_offset == UNITS_PER_WORD
+ && (frame.nregs + frame.nsseregs) == 0);
+ }
+@@ -12344,7 +12342,7 @@ HOST_WIDE_INT
+ ix86_initial_elimination_offset (int from, int to)
+ {
+ ix86_compute_frame_layout ();
+- struct ix86_frame frame = cfun->machine->frame;
++ struct ix86_frame &frame = cfun->machine->frame;
+
+ if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM)
+ return frame.hard_frame_pointer_offset;
+@@ -14860,7 +14858,6 @@ static GTY(()) rtx split_stack_fn_large;
+ void
+ ix86_expand_split_stack_prologue (void)
+ {
+- struct ix86_frame frame;
+ HOST_WIDE_INT allocate;
+ unsigned HOST_WIDE_INT args_size;
+ rtx_code_label *label;
+@@ -14873,7 +14870,7 @@ ix86_expand_split_stack_prologue (void)
+
+ ix86_finalize_stack_realign_flags ();
+ ix86_compute_frame_layout ();
+- frame = cfun->machine->frame;
++ struct ix86_frame &frame = cfun->machine->frame;
+ allocate = frame.stack_pointer_offset - INCOMING_FRAME_SP_OFFSET;
+
+ /* This is the label we will branch to if we have enough stack
+--
+2.7.4
+
diff --git a/development/gcc5/patches/0003-i386-More-use-reference-of-struct-ix86_frame-to-avoi.diff b/development/gcc5/patches/0003-i386-More-use-reference-of-struct-ix86_frame-to-avoi.diff
new file mode 100644
index 0000000000..f6f30d1d22
--- /dev/null
+++ b/development/gcc5/patches/0003-i386-More-use-reference-of-struct-ix86_frame-to-avoi.diff
@@ -0,0 +1,59 @@
+From 839ca2d69157ef03c8df0ab912dacdb991738694 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 15 Jan 2018 11:33:42 +0000
+Subject: [PATCH 3/9] i386: More use reference of struct ix86_frame to avoid copy
+
+When there is no need to make a copy of ix86_frame, we can use reference
+of struct ix86_frame to avoid copy.
+
+ Backport from mainline
+ * config/i386/i386.c (ix86_expand_prologue): Use reference of
+ struct ix86_frame.
+ (ix86_expand_epilogue): Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256695 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog | 7 +++++++
+ gcc/config/i386/i386.c | 6 ++----
+ 2 files changed, 9 insertions(+), 4 deletions(-)
+
+diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
+index 397ef7c..986e6d7 100644
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -13667,7 +13667,6 @@ ix86_expand_prologue (void)
+ {
+ struct machine_function *m = cfun->machine;
+ rtx insn, t;
+- struct ix86_frame frame;
+ HOST_WIDE_INT allocate;
+ bool int_registers_saved;
+ bool sse_registers_saved;
+@@ -13691,7 +13690,7 @@ ix86_expand_prologue (void)
+ m->fs.sp_valid = true;
+
+ ix86_compute_frame_layout ();
+- frame = m->frame;
++ struct ix86_frame &frame = cfun->machine->frame;
+
+ if (!TARGET_64BIT && ix86_function_ms_hook_prologue (current_function_decl))
+ {
+@@ -14354,13 +14353,12 @@ ix86_expand_epilogue (int style)
+ {
+ struct machine_function *m = cfun->machine;
+ struct machine_frame_state frame_state_save = m->fs;
+- struct ix86_frame frame;
+ bool restore_regs_via_mov;
+ bool using_drap;
+
+ ix86_finalize_stack_realign_flags ();
+ ix86_compute_frame_layout ();
+- frame = m->frame;
++ struct ix86_frame &frame = cfun->machine->frame;
+
+ m->fs.sp_valid = (!frame_pointer_needed
+ || (crtl->sp_is_unchanging
+--
+2.7.4
+
diff --git a/development/gcc5/patches/0004-i386-Don-t-use-reference-of-struct-ix86_frame.diff b/development/gcc5/patches/0004-i386-Don-t-use-reference-of-struct-ix86_frame.diff
new file mode 100644
index 0000000000..7678444cd7
--- /dev/null
+++ b/development/gcc5/patches/0004-i386-Don-t-use-reference-of-struct-ix86_frame.diff
@@ -0,0 +1,63 @@
+From c25b81ba01fa9ac0c1baa3aabd64190c47928f03 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 12:49:29 +0000
+Subject: [PATCH 4/9] i386: Don't use reference of struct ix86_frame
+
+Use reference of struct ix86_frame in ix86_expand_prologue and
+ix86_expand_epilogue caused:
+
+raised STORAGE_ERROR : stack overflow or erroneous memory access
+make[5]: *** [/export/gnu/import/git/sources/gcc/gcc/ada/Make-generated.in:45: ada/sinfo.h] Error 1
+
+on trunk when bootstrapping GCC with ada on x86-64.
+
+ * config/i386/i386.c (ix86_expand_prologue): Don't use reference
+ of struct ix86_frame.
+ (ix86_expand_epilogue): Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256742 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog | 10 ++++++++++
+ gcc/config/i386/i386.c | 6 ++++--
+ 2 files changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
+index e758387..ba2abc5 100644
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -14061,6 +14061,7 @@ ix86_expand_prologue (void)
+ {
+ struct machine_function *m = cfun->machine;
+ rtx insn, t;
++ struct ix86_frame frame;
+ HOST_WIDE_INT allocate;
+ bool int_registers_saved;
+ bool sse_registers_saved;
+@@ -14084,7 +14085,7 @@ ix86_expand_prologue (void)
+ m->fs.sp_valid = true;
+
+ ix86_compute_frame_layout ();
+- struct ix86_frame &frame = cfun->machine->frame;
++ frame = m->frame;
+
+ if (!TARGET_64BIT && ix86_function_ms_hook_prologue (current_function_decl))
+ {
+@@ -14747,12 +14748,13 @@ ix86_expand_epilogue (int style)
+ {
+ struct machine_function *m = cfun->machine;
+ struct machine_frame_state frame_state_save = m->fs;
++ struct ix86_frame frame;
+ bool restore_regs_via_mov;
+ bool using_drap;
+
+ ix86_finalize_stack_realign_flags ();
+ ix86_compute_frame_layout ();
+- struct ix86_frame &frame = cfun->machine->frame;
++ frame = m->frame;
+
+ m->fs.sp_valid = (!frame_pointer_needed
+ || (crtl->sp_is_unchanging
+--
+2.7.4
+
diff --git a/development/gcc5/patches/0005-x86-Add-mindirect-branch-doc.diff b/development/gcc5/patches/0005-x86-Add-mindirect-branch-doc.diff
new file mode 100644
index 0000000000..bcaf572b1e
--- /dev/null
+++ b/development/gcc5/patches/0005-x86-Add-mindirect-branch-doc.diff
@@ -0,0 +1,279 @@
+From c6b72be421ded17e0c156070ba6e90aa6c335ed6 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 10:59:42 +0000
+Subject: [PATCH 5/9] x86: Add -mindirect-branch= (documentation)
+
+Add -mindirect-branch= option to convert indirect call and jump to call
+and return thunks. The default is 'keep', which keeps indirect call and
+jump unmodified. 'thunk' converts indirect call and jump to call and
+return thunk. 'thunk-inline' converts indirect call and jump to inlined
+call and return thunk. 'thunk-extern' converts indirect call and jump to
+external call and return thunk provided in a separate object file. You
+can control this behavior for a specific function by using the function
+attribute indirect_branch.
+
+2 kinds of thunks are geneated. Memory thunk where the function address
+is at the top of the stack:
+
+__x86_indirect_thunk:
+ call L2
+L1:
+ pause
+ lfence
+ jmp L1
+L2:
+ lea 8(%rsp), %rsp|lea 4(%esp), %esp
+ ret
+
+Indirect jmp via memory, "jmp mem", is converted to
+
+ push memory
+ jmp __x86_indirect_thunk
+
+Indirect call via memory, "call mem", is converted to
+
+ jmp L2
+L1:
+ push [mem]
+ jmp __x86_indirect_thunk
+L2:
+ call L1
+
+Register thunk where the function address is in a register, reg:
+
+__x86_indirect_thunk_reg:
+ call L2
+L1:
+ pause
+ lfence
+ jmp L1
+L2:
+ movq %reg, (%rsp)|movl %reg, (%esp)
+ ret
+
+where reg is one of (r|e)ax, (r|e)dx, (r|e)cx, (r|e)bx, (r|e)si, (r|e)di,
+(r|e)bp, r8, r9, r10, r11, r12, r13, r14 and r15.
+
+Indirect jmp via register, "jmp reg", is converted to
+
+ jmp __x86_indirect_thunk_reg
+
+Indirect call via register, "call reg", is converted to
+
+ call __x86_indirect_thunk_reg
+
+gcc/
+
+ Backport from mainline
+ * config/i386/i386-opts.h (indirect_branch): New.
+ * config/i386/i386-protos.h (ix86_output_indirect_jmp): Likewise.
+ * config/i386/i386.c (ix86_using_red_zone): Disallow red-zone
+ with local indirect jump when converting indirect call and jump.
+ (ix86_set_indirect_branch_type): New.
+ (ix86_set_current_function): Call ix86_set_indirect_branch_type.
+ (indirectlabelno): New.
+ (indirect_thunk_needed): Likewise.
+ (indirect_thunk_bnd_needed): Likewise.
+ (indirect_thunks_used): Likewise.
+ (indirect_thunks_bnd_used): Likewise.
+ (INDIRECT_LABEL): Likewise.
+ (indirect_thunk_name): Likewise.
+ (output_indirect_thunk): Likewise.
+ (output_indirect_thunk_function): Likewise.
+ (ix86_output_indirect_branch_via_reg): Likewise.
+ (ix86_output_indirect_branch_via_push): Likewise.
+ (ix86_output_indirect_branch): Likewise.
+ (ix86_output_indirect_jmp): Likewise.
+ (ix86_code_end): Call output_indirect_thunk_function if needed.
+ (ix86_output_call_insn): Call ix86_output_indirect_branch if
+ needed.
+ (ix86_handle_fndecl_attribute): Handle indirect_branch.
+ (ix86_attribute_table): Add indirect_branch.
+ * config/i386/i386.h (machine_function): Add indirect_branch_type
+ and has_local_indirect_jump.
+ * config/i386/i386.md (indirect_jump): Set has_local_indirect_jump
+ to true.
+ (tablejump): Likewise.
+ (*indirect_jump): Use ix86_output_indirect_jmp.
+ (*tablejump_1): Likewise.
+ (simple_return_indirect_internal): Likewise.
+ * config/i386/i386.opt (mindirect-branch=): New option.
+ (indirect_branch): New.
+ (keep): Likewise.
+ (thunk): Likewise.
+ (thunk-inline): Likewise.
+ (thunk-extern): Likewise.
+ * doc/extend.texi: Document indirect_branch function attribute.
+ * doc/invoke.texi: Document -mindirect-branch= option.
+
+gcc/testsuite/
+
+ Backport from mainline
+ * gcc.target/i386/indirect-thunk-1.c: New test.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-8.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256732 138bc75d-0d04-0410-961f-82ee72b054a4
+
+[UBUNTU NOTES: Updated for gcc-5.4 to include defines for
+ FIRST_INT_REG, LAST_INT_REG, and LEGACY_INT_REGNO_P as defined in
+ https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=222269.
+ Dropped indirect-thunk-5.c, indirect-thunk-6.c,
+ indirect-thunk-bnd-3.c, indirect-thunk-bnd-4.c,
+ indirect-thunk-extern-5.c, indirect-thunk-extern-6.c,
+ indirect-thunk-inline-5.c, and indirect-thunk-inline-6.c tests due
+ to gcc 5.4 and earlier not supporting the -fno-plt option.
+ --sbeattie, tyhicks]
+---
+ src/gcc/config/i386/i386-opts.h | 13
+ src/gcc/config/i386/i386-protos.h | 1
+ src/gcc/config/i386/i386.c | 621 +++++++++++-
+ src/gcc/config/i386/i386.h | 12
+ src/gcc/config/i386/i386.md | 26
+ src/gcc/config/i386/i386.opt | 20
+ src/gcc/doc/extend.texi | 10
+ src/gcc/doc/invoke.texi | 14
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 44
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c | 23
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c | 23
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c | 22
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c | 22
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c | 44
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c | 42
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c | 19
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c | 19
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c | 43
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c | 44
+ 33 files changed, 1334 insertions(+), 15 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+
+Index: b/src/gcc/doc/extend.texi
+===================================================================
+--- a/src/gcc/doc/extend.texi
++++ b/src/gcc/doc/extend.texi
+@@ -4119,6 +4119,16 @@ Specify which floating-point unit to use
+ @code{target("fpmath=sse,387")} option must be specified as
+ @code{target("fpmath=sse+387")} because the comma would separate
+ different options.
++
++@item indirect_branch("@var{choice}")
++@cindex @code{indirect_branch} function attribute, x86
++On x86 targets, the @code{indirect_branch} attribute causes the compiler
++to convert indirect call and jump with @var{choice}. @samp{keep}
++keeps indirect call and jump unmodified. @samp{thunk} converts indirect
++call and jump to call and return thunk. @samp{thunk-inline} converts
++indirect call and jump to inlined call and return thunk.
++@samp{thunk-extern} converts indirect call and jump to external call
++and return thunk provided in a separate object file.
+ @end table
+
+ On the PowerPC, the following options are allowed:
+Index: b/src/gcc/doc/invoke.texi
+===================================================================
+--- a/src/gcc/doc/invoke.texi
++++ b/src/gcc/doc/invoke.texi
+@@ -1090,7 +1090,8 @@ See RS/6000 and PowerPC Options.
+ -m32 -m64 -mx32 -m16 -mlarge-data-threshold=@var{num} @gol
+ -msse2avx -mfentry -mrecord-mcount -mnop-mcount -m8bit-idiv @gol
+ -mavx256-split-unaligned-load -mavx256-split-unaligned-store @gol
+--malign-data=@var{type} -mstack-protector-guard=@var{guard}}
++-malign-data=@var{type} -mstack-protector-guard=@var{guard} @gol
++-mindirect-branch=@var{choice}}
+
+ @emph{x86 Windows Options}
+ @gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll @gol
+@@ -24017,6 +24018,17 @@ The default value of this option is enab
+ of the option is @option{-fno-sync-libcalls}. This option is used in
+ the implementation of the @file{libatomic} runtime library.
+
++@item -mindirect-branch=@var{choice}
++@opindex -mindirect-branch
++Convert indirect call and jump with @var{choice}. The default is
++@samp{keep}, which keeps indirect call and jump unmodified.
++@samp{thunk} converts indirect call and jump to call and return thunk.
++@samp{thunk-inline} converts indirect call and jump to inlined call
++and return thunk. @samp{thunk-extern} converts indirect call and jump
++to external call and return thunk provided in a separate object file.
++You can control this behavior for a specific function by using the
++function attribute @code{indirect_branch}. @xref{Function Attributes}.
++
+ @end table
+
+ @c man end
diff --git a/development/gcc5/patches/0005-x86-Add-mindirect-branch.diff b/development/gcc5/patches/0005-x86-Add-mindirect-branch.diff
new file mode 100644
index 0000000000..db9690ccc1
--- /dev/null
+++ b/development/gcc5/patches/0005-x86-Add-mindirect-branch.diff
@@ -0,0 +1,1870 @@
+From c6b72be421ded17e0c156070ba6e90aa6c335ed6 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 10:59:42 +0000
+Subject: [PATCH 5/9] x86: Add -mindirect-branch=
+
+Add -mindirect-branch= option to convert indirect call and jump to call
+and return thunks. The default is 'keep', which keeps indirect call and
+jump unmodified. 'thunk' converts indirect call and jump to call and
+return thunk. 'thunk-inline' converts indirect call and jump to inlined
+call and return thunk. 'thunk-extern' converts indirect call and jump to
+external call and return thunk provided in a separate object file. You
+can control this behavior for a specific function by using the function
+attribute indirect_branch.
+
+2 kinds of thunks are geneated. Memory thunk where the function address
+is at the top of the stack:
+
+__x86_indirect_thunk:
+ call L2
+L1:
+ pause
+ lfence
+ jmp L1
+L2:
+ lea 8(%rsp), %rsp|lea 4(%esp), %esp
+ ret
+
+Indirect jmp via memory, "jmp mem", is converted to
+
+ push memory
+ jmp __x86_indirect_thunk
+
+Indirect call via memory, "call mem", is converted to
+
+ jmp L2
+L1:
+ push [mem]
+ jmp __x86_indirect_thunk
+L2:
+ call L1
+
+Register thunk where the function address is in a register, reg:
+
+__x86_indirect_thunk_reg:
+ call L2
+L1:
+ pause
+ lfence
+ jmp L1
+L2:
+ movq %reg, (%rsp)|movl %reg, (%esp)
+ ret
+
+where reg is one of (r|e)ax, (r|e)dx, (r|e)cx, (r|e)bx, (r|e)si, (r|e)di,
+(r|e)bp, r8, r9, r10, r11, r12, r13, r14 and r15.
+
+Indirect jmp via register, "jmp reg", is converted to
+
+ jmp __x86_indirect_thunk_reg
+
+Indirect call via register, "call reg", is converted to
+
+ call __x86_indirect_thunk_reg
+
+gcc/
+
+ Backport from mainline
+ * config/i386/i386-opts.h (indirect_branch): New.
+ * config/i386/i386-protos.h (ix86_output_indirect_jmp): Likewise.
+ * config/i386/i386.c (ix86_using_red_zone): Disallow red-zone
+ with local indirect jump when converting indirect call and jump.
+ (ix86_set_indirect_branch_type): New.
+ (ix86_set_current_function): Call ix86_set_indirect_branch_type.
+ (indirectlabelno): New.
+ (indirect_thunk_needed): Likewise.
+ (indirect_thunk_bnd_needed): Likewise.
+ (indirect_thunks_used): Likewise.
+ (indirect_thunks_bnd_used): Likewise.
+ (INDIRECT_LABEL): Likewise.
+ (indirect_thunk_name): Likewise.
+ (output_indirect_thunk): Likewise.
+ (output_indirect_thunk_function): Likewise.
+ (ix86_output_indirect_branch_via_reg): Likewise.
+ (ix86_output_indirect_branch_via_push): Likewise.
+ (ix86_output_indirect_branch): Likewise.
+ (ix86_output_indirect_jmp): Likewise.
+ (ix86_code_end): Call output_indirect_thunk_function if needed.
+ (ix86_output_call_insn): Call ix86_output_indirect_branch if
+ needed.
+ (ix86_handle_fndecl_attribute): Handle indirect_branch.
+ (ix86_attribute_table): Add indirect_branch.
+ * config/i386/i386.h (machine_function): Add indirect_branch_type
+ and has_local_indirect_jump.
+ * config/i386/i386.md (indirect_jump): Set has_local_indirect_jump
+ to true.
+ (tablejump): Likewise.
+ (*indirect_jump): Use ix86_output_indirect_jmp.
+ (*tablejump_1): Likewise.
+ (simple_return_indirect_internal): Likewise.
+ * config/i386/i386.opt (mindirect-branch=): New option.
+ (indirect_branch): New.
+ (keep): Likewise.
+ (thunk): Likewise.
+ (thunk-inline): Likewise.
+ (thunk-extern): Likewise.
+ * doc/extend.texi: Document indirect_branch function attribute.
+ * doc/invoke.texi: Document -mindirect-branch= option.
+
+gcc/testsuite/
+
+ Backport from mainline
+ * gcc.target/i386/indirect-thunk-1.c: New test.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-8.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256732 138bc75d-0d04-0410-961f-82ee72b054a4
+
+[UBUNTU NOTES: Updated for gcc-5.4 to include defines for
+ FIRST_INT_REG, LAST_INT_REG, and LEGACY_INT_REGNO_P as defined in
+ https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=222269.
+ Dropped indirect-thunk-5.c, indirect-thunk-6.c,
+ indirect-thunk-bnd-3.c, indirect-thunk-bnd-4.c,
+ indirect-thunk-extern-5.c, indirect-thunk-extern-6.c,
+ indirect-thunk-inline-5.c, and indirect-thunk-inline-6.c tests due
+ to gcc 5.4 and earlier not supporting the -fno-plt option.
+ --sbeattie, tyhicks]
+---
+ src/gcc/config/i386/i386-opts.h | 13
+ src/gcc/config/i386/i386-protos.h | 1
+ src/gcc/config/i386/i386.c | 621 +++++++++++-
+ src/gcc/config/i386/i386.h | 12
+ src/gcc/config/i386/i386.md | 26
+ src/gcc/config/i386/i386.opt | 20
+ src/gcc/doc/extend.texi | 10
+ src/gcc/doc/invoke.texi | 14
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 44
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c | 23
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c | 23
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c | 22
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c | 22
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c | 44
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c | 42
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c | 19
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c | 19
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c | 43
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c | 20
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c | 21
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c | 44
+ 33 files changed, 1334 insertions(+), 15 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+
+Index: b/src/gcc/config/i386/i386-opts.h
+===================================================================
+--- a/src/gcc/config/i386/i386-opts.h
++++ b/src/gcc/config/i386/i386-opts.h
+@@ -99,4 +99,17 @@ enum stack_protector_guard {
+ SSP_GLOBAL /* global canary */
+ };
+
++/* This is used to mitigate variant #2 of the speculative execution
++ vulnerabilities on x86 processors identified by CVE-2017-5715, aka
++ Spectre. They convert indirect branches and function returns to
++ call and return thunks to avoid speculative execution via indirect
++ call, jmp and ret. */
++enum indirect_branch {
++ indirect_branch_unset = 0,
++ indirect_branch_keep,
++ indirect_branch_thunk,
++ indirect_branch_thunk_inline,
++ indirect_branch_thunk_extern
++};
++
+ #endif
+Index: b/src/gcc/config/i386/i386-protos.h
+===================================================================
+--- a/src/gcc/config/i386/i386-protos.h
++++ b/src/gcc/config/i386/i386-protos.h
+@@ -306,6 +306,7 @@ extern enum attr_cpu ix86_schedule;
+ #endif
+
+ extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op);
++extern const char * ix86_output_indirect_jmp (rtx call_op, bool ret_p);
+
+ #ifdef RTX_CODE
+ /* Target data for multipass lookahead scheduling.
+Index: b/src/gcc/config/i386/i386.c
+===================================================================
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -2554,12 +2554,23 @@ make_pass_insert_vzeroupper (gcc::contex
+ return new pass_insert_vzeroupper (ctxt);
+ }
+
+-/* Return true if a red-zone is in use. */
++/* Return true if a red-zone is in use. We can't use red-zone when
++ there are local indirect jumps, like "indirect_jump" or "tablejump",
++ which jumps to another place in the function, since "call" in the
++ indirect thunk pushes the return address onto stack, destroying
++ red-zone.
++
++ TODO: If we can reserve the first 2 WORDs, for PUSH and, another
++ for CALL, in red-zone, we can allow local indirect jumps with
++ indirect thunk. */
+
+ static inline bool
+ ix86_using_red_zone (void)
+ {
+- return TARGET_RED_ZONE && !TARGET_64BIT_MS_ABI;
++ return (TARGET_RED_ZONE
++ && !TARGET_64BIT_MS_ABI
++ && (!cfun->machine->has_local_indirect_jump
++ || cfun->machine->indirect_branch_type == indirect_branch_keep));
+ }
+
+ /* Return a string that documents the current -m options. The caller is
+@@ -5126,6 +5137,37 @@ ix86_reset_previous_fndecl (void)
+ ix86_previous_fndecl = NULL_TREE;
+ }
+
++/* Set the indirect_branch_type field from the function FNDECL. */
++
++static void
++ix86_set_indirect_branch_type (tree fndecl)
++{
++ if (cfun->machine->indirect_branch_type == indirect_branch_unset)
++ {
++ tree attr = lookup_attribute ("indirect_branch",
++ DECL_ATTRIBUTES (fndecl));
++ if (attr != NULL)
++ {
++ tree args = TREE_VALUE (attr);
++ if (args == NULL)
++ gcc_unreachable ();
++ tree cst = TREE_VALUE (args);
++ if (strcmp (TREE_STRING_POINTER (cst), "keep") == 0)
++ cfun->machine->indirect_branch_type = indirect_branch_keep;
++ else if (strcmp (TREE_STRING_POINTER (cst), "thunk") == 0)
++ cfun->machine->indirect_branch_type = indirect_branch_thunk;
++ else if (strcmp (TREE_STRING_POINTER (cst), "thunk-inline") == 0)
++ cfun->machine->indirect_branch_type = indirect_branch_thunk_inline;
++ else if (strcmp (TREE_STRING_POINTER (cst), "thunk-extern") == 0)
++ cfun->machine->indirect_branch_type = indirect_branch_thunk_extern;
++ else
++ gcc_unreachable ();
++ }
++ else
++ cfun->machine->indirect_branch_type = ix86_indirect_branch;
++ }
++}
++
+ /* Establish appropriate back-end context for processing the function
+ FNDECL. The argument might be NULL to indicate processing at top
+ level, outside of any function scope. */
+@@ -5136,7 +5178,11 @@ ix86_set_current_function (tree fndecl)
+ several times in the course of compiling a function, and we don't want to
+ slow things down too much or call target_reinit when it isn't safe. */
+ if (fndecl == ix86_previous_fndecl)
+- return;
++ {
++ if (fndecl != NULL_TREE)
++ ix86_set_indirect_branch_type (fndecl);
++ return;
++ }
+
+ tree old_tree;
+ if (ix86_previous_fndecl == NULL_TREE)
+@@ -5153,6 +5199,8 @@ ix86_set_current_function (tree fndecl)
+ return;
+ }
+
++ ix86_set_indirect_branch_type (fndecl);
++
+ tree new_tree = DECL_FUNCTION_SPECIFIC_TARGET (fndecl);
+ if (new_tree == NULL_TREE)
+ new_tree = target_option_default_node;
+@@ -9681,6 +9729,220 @@ ix86_setup_frame_addresses (void)
+ # endif
+ #endif
+
++/* Label count for call and return thunks. It is used to make unique
++ labels in call and return thunks. */
++static int indirectlabelno;
++
++/* True if call and return thunk functions are needed. */
++static bool indirect_thunk_needed = false;
++/* True if call and return thunk functions with the BND prefix are
++ needed. */
++static bool indirect_thunk_bnd_needed = false;
++
++/* Bit masks of integer registers, which contain branch target, used
++ by call and return thunks functions. */
++static int indirect_thunks_used;
++/* Bit masks of integer registers, which contain branch target, used
++ by call and return thunks functions with the BND prefix. */
++static int indirect_thunks_bnd_used;
++
++#ifndef INDIRECT_LABEL
++# define INDIRECT_LABEL "LIND"
++#endif
++
++/* Fills in the label name that should be used for the indirect thunk. */
++
++static void
++indirect_thunk_name (char name[32], int regno, bool need_bnd_p)
++{
++ if (USE_HIDDEN_LINKONCE)
++ {
++ const char *bnd = need_bnd_p ? "_bnd" : "";
++ if (regno >= 0)
++ {
++ const char *reg_prefix;
++ if (LEGACY_INT_REGNO_P (regno))
++ reg_prefix = TARGET_64BIT ? "r" : "e";
++ else
++ reg_prefix = "";
++ sprintf (name, "__x86_indirect_thunk%s_%s%s",
++ bnd, reg_prefix, reg_names[regno]);
++ }
++ else
++ sprintf (name, "__x86_indirect_thunk%s", bnd);
++ }
++ else
++ {
++ if (regno >= 0)
++ {
++ if (need_bnd_p)
++ ASM_GENERATE_INTERNAL_LABEL (name, "LITBR", regno);
++ else
++ ASM_GENERATE_INTERNAL_LABEL (name, "LITR", regno);
++ }
++ else
++ {
++ if (need_bnd_p)
++ ASM_GENERATE_INTERNAL_LABEL (name, "LITB", 0);
++ else
++ ASM_GENERATE_INTERNAL_LABEL (name, "LIT", 0);
++ }
++ }
++}
++
++/* Output a call and return thunk for indirect branch. If BND_P is
++ true, the BND prefix is needed. If REGNO != -1, the function
++ address is in REGNO and the call and return thunk looks like:
++
++ call L2
++ L1:
++ pause
++ jmp L1
++ L2:
++ mov %REG, (%sp)
++ ret
++
++ Otherwise, the function address is on the top of stack and the
++ call and return thunk looks like:
++
++ call L2
++ L1:
++ pause
++ jmp L1
++ L2:
++ lea WORD_SIZE(%sp), %sp
++ ret
++ */
++
++static void
++output_indirect_thunk (bool need_bnd_p, int regno)
++{
++ char indirectlabel1[32];
++ char indirectlabel2[32];
++
++ ASM_GENERATE_INTERNAL_LABEL (indirectlabel1, INDIRECT_LABEL,
++ indirectlabelno++);
++ ASM_GENERATE_INTERNAL_LABEL (indirectlabel2, INDIRECT_LABEL,
++ indirectlabelno++);
++
++ /* Call */
++ if (need_bnd_p)
++ fputs ("\tbnd call\t", asm_out_file);
++ else
++ fputs ("\tcall\t", asm_out_file);
++ assemble_name_raw (asm_out_file, indirectlabel2);
++ fputc ('\n', asm_out_file);
++
++ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel1);
++
++ /* Pause + lfence. */
++ fprintf (asm_out_file, "\tpause\n\tlfence\n");
++
++ /* Jump. */
++ fputs ("\tjmp\t", asm_out_file);
++ assemble_name_raw (asm_out_file, indirectlabel1);
++ fputc ('\n', asm_out_file);
++
++ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel2);
++
++ if (regno >= 0)
++ {
++ /* MOV. */
++ rtx xops[2];
++ xops[0] = gen_rtx_MEM (word_mode, stack_pointer_rtx);
++ xops[1] = gen_rtx_REG (word_mode, regno);
++ output_asm_insn ("mov\t{%1, %0|%0, %1}", xops);
++ }
++ else
++ {
++ /* LEA. */
++ rtx xops[2];
++ xops[0] = stack_pointer_rtx;
++ xops[1] = plus_constant (Pmode, stack_pointer_rtx, UNITS_PER_WORD);
++ output_asm_insn ("lea\t{%E1, %0|%0, %E1}", xops);
++ }
++
++ if (need_bnd_p)
++ fputs ("\tbnd ret\n", asm_out_file);
++ else
++ fputs ("\tret\n", asm_out_file);
++}
++
++/* Output a funtion with a call and return thunk for indirect branch.
++ If BND_P is true, the BND prefix is needed. If REGNO != -1, the
++ function address is in REGNO. Otherwise, the function address is
++ on the top of stack. */
++
++static void
++output_indirect_thunk_function (bool need_bnd_p, int regno)
++{
++ char name[32];
++ tree decl;
++
++ /* Create __x86_indirect_thunk/__x86_indirect_thunk_bnd. */
++ indirect_thunk_name (name, regno, need_bnd_p);
++ decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL,
++ get_identifier (name),
++ build_function_type_list (void_type_node, NULL_TREE));
++ DECL_RESULT (decl) = build_decl (BUILTINS_LOCATION, RESULT_DECL,
++ NULL_TREE, void_type_node);
++ TREE_PUBLIC (decl) = 1;
++ TREE_STATIC (decl) = 1;
++ DECL_IGNORED_P (decl) = 1;
++
++#if TARGET_MACHO
++ if (TARGET_MACHO)
++ {
++ switch_to_section (darwin_sections[picbase_thunk_section]);
++ fputs ("\t.weak_definition\t", asm_out_file);
++ assemble_name (asm_out_file, name);
++ fputs ("\n\t.private_extern\t", asm_out_file);
++ assemble_name (asm_out_file, name);
++ putc ('\n', asm_out_file);
++ ASM_OUTPUT_LABEL (asm_out_file, name);
++ DECL_WEAK (decl) = 1;
++ }
++ else
++#endif
++ if (USE_HIDDEN_LINKONCE)
++ {
++ cgraph_node::create (decl)->set_comdat_group (DECL_ASSEMBLER_NAME (decl));
++
++ targetm.asm_out.unique_section (decl, 0);
++ switch_to_section (get_named_section (decl, NULL, 0));
++
++ targetm.asm_out.globalize_label (asm_out_file, name);
++ fputs ("\t.hidden\t", asm_out_file);
++ assemble_name (asm_out_file, name);
++ putc ('\n', asm_out_file);
++ ASM_DECLARE_FUNCTION_NAME (asm_out_file, name, decl);
++ }
++ else
++ {
++ switch_to_section (text_section);
++ ASM_OUTPUT_LABEL (asm_out_file, name);
++ }
++
++ DECL_INITIAL (decl) = make_node (BLOCK);
++ current_function_decl = decl;
++ allocate_struct_function (decl, false);
++ init_function_start (decl);
++ /* We're about to hide the function body from callees of final_* by
++ emitting it directly; tell them we're a thunk, if they care. */
++ cfun->is_thunk = true;
++ first_function_block_is_cold = false;
++ /* Make sure unwind info is emitted for the thunk if needed. */
++ final_start_function (emit_barrier (), asm_out_file, 1);
++
++ output_indirect_thunk (need_bnd_p, regno);
++
++ final_end_function ();
++ init_insn_lengths ();
++ free_after_compilation (cfun);
++ set_cfun (NULL);
++ current_function_decl = NULL;
++}
++
+ static int pic_labels_used;
+
+ /* Fills in the label name that should be used for a pc thunk for
+@@ -9707,11 +9969,32 @@ ix86_code_end (void)
+ rtx xops[2];
+ int regno;
+
++ if (indirect_thunk_needed)
++ output_indirect_thunk_function (false, -1);
++ if (indirect_thunk_bnd_needed)
++ output_indirect_thunk_function (true, -1);
++
++ for (regno = FIRST_REX_INT_REG; regno <= LAST_REX_INT_REG; regno++)
++ {
++ int i = regno - FIRST_REX_INT_REG + LAST_INT_REG + 1;
++ if ((indirect_thunks_used & (1 << i)))
++ output_indirect_thunk_function (false, regno);
++
++ if ((indirect_thunks_bnd_used & (1 << i)))
++ output_indirect_thunk_function (true, regno);
++ }
++
+ for (regno = AX_REG; regno <= SP_REG; regno++)
+ {
+ char name[32];
+ tree decl;
+
++ if ((indirect_thunks_used & (1 << regno)))
++ output_indirect_thunk_function (false, regno);
++
++ if ((indirect_thunks_bnd_used & (1 << regno)))
++ output_indirect_thunk_function (true, regno);
++
+ if (!(pic_labels_used & (1 << regno)))
+ continue;
+
+@@ -25805,12 +26088,292 @@ ix86_expand_call (rtx retval, rtx fnaddr
+ return call;
+ }
+
++/* Output indirect branch via a call and return thunk. CALL_OP is a
++ register which contains the branch target. XASM is the assembly
++ template for CALL_OP. Branch is a tail call if SIBCALL_P is true.
++ A normal call is converted to:
++
++ call __x86_indirect_thunk_reg
++
++ and a tail call is converted to:
++
++ jmp __x86_indirect_thunk_reg
++ */
++
++static void
++ix86_output_indirect_branch_via_reg (rtx call_op, bool sibcall_p)
++{
++ char thunk_name_buf[32];
++ char *thunk_name;
++ bool need_bnd_p = ix86_bnd_prefixed_insn_p (current_output_insn);
++ int regno = REGNO (call_op);
++
++ if (cfun->machine->indirect_branch_type
++ != indirect_branch_thunk_inline)
++ {
++ if (cfun->machine->indirect_branch_type == indirect_branch_thunk)
++ {
++ int i = regno;
++ if (i >= FIRST_REX_INT_REG)
++ i -= (FIRST_REX_INT_REG - LAST_INT_REG - 1);
++ if (need_bnd_p)
++ indirect_thunks_bnd_used |= 1 << i;
++ else
++ indirect_thunks_used |= 1 << i;
++ }
++ indirect_thunk_name (thunk_name_buf, regno, need_bnd_p);
++ thunk_name = thunk_name_buf;
++ }
++ else
++ thunk_name = NULL;
++
++ if (sibcall_p)
++ {
++ if (thunk_name != NULL)
++ {
++ if (need_bnd_p)
++ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
++ else
++ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
++ }
++ else
++ output_indirect_thunk (need_bnd_p, regno);
++ }
++ else
++ {
++ if (thunk_name != NULL)
++ {
++ if (need_bnd_p)
++ fprintf (asm_out_file, "\tbnd call\t%s\n", thunk_name);
++ else
++ fprintf (asm_out_file, "\tcall\t%s\n", thunk_name);
++ return;
++ }
++
++ char indirectlabel1[32];
++ char indirectlabel2[32];
++
++ ASM_GENERATE_INTERNAL_LABEL (indirectlabel1,
++ INDIRECT_LABEL,
++ indirectlabelno++);
++ ASM_GENERATE_INTERNAL_LABEL (indirectlabel2,
++ INDIRECT_LABEL,
++ indirectlabelno++);
++
++ /* Jump. */
++ if (need_bnd_p)
++ fputs ("\tbnd jmp\t", asm_out_file);
++ else
++ fputs ("\tjmp\t", asm_out_file);
++ assemble_name_raw (asm_out_file, indirectlabel2);
++ fputc ('\n', asm_out_file);
++
++ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel1);
++
++ if (thunk_name != NULL)
++ {
++ if (need_bnd_p)
++ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
++ else
++ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
++ }
++ else
++ output_indirect_thunk (need_bnd_p, regno);
++
++ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel2);
++
++ /* Call. */
++ if (need_bnd_p)
++ fputs ("\tbnd call\t", asm_out_file);
++ else
++ fputs ("\tcall\t", asm_out_file);
++ assemble_name_raw (asm_out_file, indirectlabel1);
++ fputc ('\n', asm_out_file);
++ }
++}
++
++/* Output indirect branch via a call and return thunk. CALL_OP is
++ the branch target. XASM is the assembly template for CALL_OP.
++ Branch is a tail call if SIBCALL_P is true. A normal call is
++ converted to:
++
++ jmp L2
++ L1:
++ push CALL_OP
++ jmp __x86_indirect_thunk
++ L2:
++ call L1
++
++ and a tail call is converted to:
++
++ push CALL_OP
++ jmp __x86_indirect_thunk
++ */
++
++static void
++ix86_output_indirect_branch_via_push (rtx call_op, const char *xasm,
++ bool sibcall_p)
++{
++ char thunk_name_buf[32];
++ char *thunk_name;
++ char push_buf[64];
++ bool need_bnd_p = ix86_bnd_prefixed_insn_p (current_output_insn);
++ int regno = -1;
++
++ if (cfun->machine->indirect_branch_type
++ != indirect_branch_thunk_inline)
++ {
++ if (cfun->machine->indirect_branch_type == indirect_branch_thunk)
++ {
++ if (need_bnd_p)
++ indirect_thunk_bnd_needed = true;
++ else
++ indirect_thunk_needed = true;
++ }
++ indirect_thunk_name (thunk_name_buf, regno, need_bnd_p);
++ thunk_name = thunk_name_buf;
++ }
++ else
++ thunk_name = NULL;
++
++ snprintf (push_buf, sizeof (push_buf), "push{%c}\t%s",
++ TARGET_64BIT ? 'q' : 'l', xasm);
++
++ if (sibcall_p)
++ {
++ output_asm_insn (push_buf, &call_op);
++ if (thunk_name != NULL)
++ {
++ if (need_bnd_p)
++ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
++ else
++ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
++ }
++ else
++ output_indirect_thunk (need_bnd_p, regno);
++ }
++ else
++ {
++ char indirectlabel1[32];
++ char indirectlabel2[32];
++
++ ASM_GENERATE_INTERNAL_LABEL (indirectlabel1,
++ INDIRECT_LABEL,
++ indirectlabelno++);
++ ASM_GENERATE_INTERNAL_LABEL (indirectlabel2,
++ INDIRECT_LABEL,
++ indirectlabelno++);
++
++ /* Jump. */
++ if (need_bnd_p)
++ fputs ("\tbnd jmp\t", asm_out_file);
++ else
++ fputs ("\tjmp\t", asm_out_file);
++ assemble_name_raw (asm_out_file, indirectlabel2);
++ fputc ('\n', asm_out_file);
++
++ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel1);
++
++ /* An external function may be called via GOT, instead of PLT. */
++ if (MEM_P (call_op))
++ {
++ struct ix86_address parts;
++ rtx addr = XEXP (call_op, 0);
++ if (ix86_decompose_address (addr, &parts)
++ && parts.base == stack_pointer_rtx)
++ {
++ /* Since call will adjust stack by -UNITS_PER_WORD,
++ we must convert "disp(stack, index, scale)" to
++ "disp+UNITS_PER_WORD(stack, index, scale)". */
++ if (parts.index)
++ {
++ addr = gen_rtx_MULT (Pmode, parts.index,
++ GEN_INT (parts.scale));
++ addr = gen_rtx_PLUS (Pmode, stack_pointer_rtx,
++ addr);
++ }
++ else
++ addr = stack_pointer_rtx;
++
++ rtx disp;
++ if (parts.disp != NULL_RTX)
++ disp = plus_constant (Pmode, parts.disp,
++ UNITS_PER_WORD);
++ else
++ disp = GEN_INT (UNITS_PER_WORD);
++
++ addr = gen_rtx_PLUS (Pmode, addr, disp);
++ call_op = gen_rtx_MEM (GET_MODE (call_op), addr);
++ }
++ }
++
++ output_asm_insn (push_buf, &call_op);
++
++ if (thunk_name != NULL)
++ {
++ if (need_bnd_p)
++ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
++ else
++ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
++ }
++ else
++ output_indirect_thunk (need_bnd_p, regno);
++
++ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, indirectlabel2);
++
++ /* Call. */
++ if (need_bnd_p)
++ fputs ("\tbnd call\t", asm_out_file);
++ else
++ fputs ("\tcall\t", asm_out_file);
++ assemble_name_raw (asm_out_file, indirectlabel1);
++ fputc ('\n', asm_out_file);
++ }
++}
++
++/* Output indirect branch via a call and return thunk. CALL_OP is
++ the branch target. XASM is the assembly template for CALL_OP.
++ Branch is a tail call if SIBCALL_P is true. */
++
++static void
++ix86_output_indirect_branch (rtx call_op, const char *xasm,
++ bool sibcall_p)
++{
++ if (REG_P (call_op))
++ ix86_output_indirect_branch_via_reg (call_op, sibcall_p);
++ else
++ ix86_output_indirect_branch_via_push (call_op, xasm, sibcall_p);
++}
++/* Output indirect jump. CALL_OP is the jump target. Jump is a
++ function return if RET_P is true. */
++
++const char *
++ix86_output_indirect_jmp (rtx call_op, bool ret_p)
++{
++ if (cfun->machine->indirect_branch_type != indirect_branch_keep)
++ {
++ /* We can't have red-zone if this isn't a function return since
++ "call" in the indirect thunk pushes the return address onto
++ stack, destroying red-zone. */
++ if (!ret_p && ix86_red_zone_size != 0)
++ gcc_unreachable ();
++
++ ix86_output_indirect_branch (call_op, "%0", true);
++ return "";
++ }
++ else
++ return "%!jmp\t%A0";
++}
++
+ /* Output the assembly for a call instruction. */
+
+ const char *
+ ix86_output_call_insn (rtx_insn *insn, rtx call_op)
+ {
+ bool direct_p = constant_call_address_operand (call_op, VOIDmode);
++ bool output_indirect_p
++ = (!TARGET_SEH
++ && cfun->machine->indirect_branch_type != indirect_branch_keep);
+ bool seh_nop_p = false;
+ const char *xasm;
+
+@@ -25823,9 +26386,17 @@ ix86_output_call_insn (rtx_insn *insn, r
+ else if (TARGET_SEH)
+ xasm = "%!rex.W jmp %A0";
+ else
+- xasm = "%!jmp\t%A0";
++ {
++ if (output_indirect_p)
++ xasm = "%0";
++ else
++ xasm = "%!jmp\t%A0";
++ }
+
+- output_asm_insn (xasm, &call_op);
++ if (output_indirect_p && !direct_p)
++ ix86_output_indirect_branch (call_op, xasm, true);
++ else
++ output_asm_insn (xasm, &call_op);
+ return "";
+ }
+
+@@ -25862,9 +26433,17 @@ ix86_output_call_insn (rtx_insn *insn, r
+ if (direct_p)
+ xasm = "%!call\t%P0";
+ else
+- xasm = "%!call\t%A0";
++ {
++ if (output_indirect_p)
++ xasm = "%0";
++ else
++ xasm = "%!call\t%A0";
++ }
+
+- output_asm_insn (xasm, &call_op);
++ if (output_indirect_p && !direct_p)
++ ix86_output_indirect_branch (call_op, xasm, false);
++ else
++ output_asm_insn (xasm, &call_op);
+
+ if (seh_nop_p)
+ return "nop";
+@@ -43014,7 +43593,7 @@ ix86_handle_struct_attribute (tree *node
+ }
+
+ static tree
+-ix86_handle_fndecl_attribute (tree *node, tree name, tree, int,
++ix86_handle_fndecl_attribute (tree *node, tree name, tree args, int,
+ bool *no_add_attrs)
+ {
+ if (TREE_CODE (*node) != FUNCTION_DECL)
+@@ -43023,6 +43602,29 @@ ix86_handle_fndecl_attribute (tree *node
+ name);
+ *no_add_attrs = true;
+ }
++
++ if (is_attribute_p ("indirect_branch", name))
++ {
++ tree cst = TREE_VALUE (args);
++ if (TREE_CODE (cst) != STRING_CST)
++ {
++ warning (OPT_Wattributes,
++ "%qE attribute requires a string constant argument",
++ name);
++ *no_add_attrs = true;
++ }
++ else if (strcmp (TREE_STRING_POINTER (cst), "keep") != 0
++ && strcmp (TREE_STRING_POINTER (cst), "thunk") != 0
++ && strcmp (TREE_STRING_POINTER (cst), "thunk-inline") != 0
++ && strcmp (TREE_STRING_POINTER (cst), "thunk-extern") != 0)
++ {
++ warning (OPT_Wattributes,
++ "argument to %qE attribute is not "
++ "(keep|thunk|thunk-inline|thunk-extern)", name);
++ *no_add_attrs = true;
++ }
++ }
++
+ return NULL_TREE;
+ }
+
+@@ -46915,6 +47517,9 @@ static const struct attribute_spec ix86_
+ false },
+ { "callee_pop_aggregate_return", 1, 1, false, true, true,
+ ix86_handle_callee_pop_aggregate_return, true },
++ { "indirect_branch", 1, 1, true, false, false,
++ ix86_handle_fndecl_attribute, false },
++
+ /* End element. */
+ { NULL, 0, 0, false, false, false, NULL, false }
+ };
+Index: b/src/gcc/config/i386/i386.h
+===================================================================
+--- a/src/gcc/config/i386/i386.h
++++ b/src/gcc/config/i386/i386.h
+@@ -1229,6 +1229,9 @@ extern const char *host_detect_local_cpu
+ /* Base register for access to local variables of the function. */
+ #define FRAME_POINTER_REGNUM 20
+
++#define FIRST_INT_REG AX_REG
++#define LAST_INT_REG SP_REG
++
+ /* First floating point reg */
+ #define FIRST_FLOAT_REG 8
+
+@@ -1465,6 +1468,8 @@ enum reg_class
+ registers. */
+ #define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
+
++#define LEGACY_INT_REGNO_P(N) (IN_RANGE ((N), FIRST_INT_REG, LAST_INT_REG))
++
+ #define QI_REG_P(X) (REG_P (X) && QI_REGNO_P (REGNO (X)))
+ #define QI_REGNO_P(N) IN_RANGE ((N), AX_REG, BX_REG)
+
+@@ -2550,6 +2555,13 @@ struct GTY(()) machine_function {
+ /* If true, it is safe to not save/restore DRAP register. */
+ BOOL_BITFIELD no_drap_save_restore : 1;
+
++ /* How to generate indirec branch. */
++ ENUM_BITFIELD(indirect_branch) indirect_branch_type : 3;
++
++ /* If true, the current function has local indirect jumps, like
++ "indirect_jump" or "tablejump". */
++ BOOL_BITFIELD has_local_indirect_jump : 1;
++
+ /* During prologue/epilogue generation, the current frame state.
+ Otherwise, the frame state at the end of the prologue. */
+ struct machine_frame_state fs;
+Index: b/src/gcc/config/i386/i386.md
+===================================================================
+--- a/src/gcc/config/i386/i386.md
++++ b/src/gcc/config/i386/i386.md
+@@ -11556,13 +11556,18 @@
+ {
+ if (TARGET_X32)
+ operands[0] = convert_memory_address (word_mode, operands[0]);
++ cfun->machine->has_local_indirect_jump = true;
+ })
+
+ (define_insn "*indirect_jump"
+ [(set (pc) (match_operand:W 0 "indirect_branch_operand" "rBw"))]
+ ""
+- "%!jmp\t%A0"
+- [(set_attr "type" "ibr")
++ "* return ix86_output_indirect_jmp (operands[0], false);"
++ [(set (attr "type")
++ (if_then_else (match_test "(cfun->machine->indirect_branch_type
++ != indirect_branch_keep)")
++ (const_string "multi")
++ (const_string "ibr")))
+ (set_attr "length_immediate" "0")])
+
+ (define_expand "tablejump"
+@@ -11604,14 +11609,19 @@
+
+ if (TARGET_X32)
+ operands[0] = convert_memory_address (word_mode, operands[0]);
++ cfun->machine->has_local_indirect_jump = true;
+ })
+
+ (define_insn "*tablejump_1"
+ [(set (pc) (match_operand:W 0 "indirect_branch_operand" "rBw"))
+ (use (label_ref (match_operand 1)))]
+ ""
+- "%!jmp\t%A0"
+- [(set_attr "type" "ibr")
++ "* return ix86_output_indirect_jmp (operands[0], false);"
++ [(set (attr "type")
++ (if_then_else (match_test "(cfun->machine->indirect_branch_type
++ != indirect_branch_keep)")
++ (const_string "multi")
++ (const_string "ibr")))
+ (set_attr "length_immediate" "0")])
+
+ ;; Convert setcc + movzbl to xor + setcc if operands don't overlap.
+@@ -12198,8 +12208,12 @@
+ [(simple_return)
+ (use (match_operand:SI 0 "register_operand" "r"))]
+ "reload_completed"
+- "%!jmp\t%A0"
+- [(set_attr "type" "ibr")
++ "* return ix86_output_indirect_jmp (operands[0], true);"
++ [(set (attr "type")
++ (if_then_else (match_test "(cfun->machine->indirect_branch_type
++ != indirect_branch_keep)")
++ (const_string "multi")
++ (const_string "ibr")))
+ (set_attr "length_immediate" "0")])
+
+ (define_insn "nop"
+Index: b/src/gcc/config/i386/i386.opt
+===================================================================
+--- a/src/gcc/config/i386/i386.opt
++++ b/src/gcc/config/i386/i386.opt
+@@ -876,3 +876,23 @@ Enum(stack_protector_guard) String(tls)
+
+ EnumValue
+ Enum(stack_protector_guard) String(global) Value(SSP_GLOBAL)
++
++mindirect-branch=
++Target Report RejectNegative Joined Enum(indirect_branch) Var(ix86_indirect_branch) Init(indirect_branch_keep)
++Convert indirect call and jump to call and return thunks.
++
++Enum
++Name(indirect_branch) Type(enum indirect_branch)
++Known indirect branch choices (for use with the -mindirect-branch= option):
++
++EnumValue
++Enum(indirect_branch) String(keep) Value(indirect_branch_keep)
++
++EnumValue
++Enum(indirect_branch) String(thunk) Value(indirect_branch_thunk)
++
++EnumValue
++Enum(indirect_branch) String(thunk-inline) Value(indirect_branch_thunk_inline)
++
++EnumValue
++Enum(indirect_branch) String(thunk-extern) Value(indirect_branch_thunk_extern)
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+@@ -0,0 +1,44 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++
++void func0 (void);
++void func1 (void);
++void func2 (void);
++void func3 (void);
++void func4 (void);
++void func4 (void);
++void func5 (void);
++
++void
++bar (int i)
++{
++ switch (i)
++ {
++ default:
++ func0 ();
++ break;
++ case 1:
++ func1 ();
++ break;
++ case 2:
++ func2 ();
++ break;
++ case 3:
++ func3 ();
++ break;
++ case 4:
++ func4 ();
++ break;
++ case 5:
++ func5 ();
++ break;
++ }
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+@@ -0,0 +1,23 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++extern void male_indirect_jump (long)
++ __attribute__ ((indirect_branch("thunk")));
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++__attribute__ ((indirect_branch("thunk")))
++void
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+@@ -0,0 +1,23 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++extern int male_indirect_jump (long)
++ __attribute__ ((indirect_branch("thunk-inline")));
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++__attribute__ ((indirect_branch("thunk-inline")))
++int
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++extern int male_indirect_jump (long)
++ __attribute__ ((indirect_branch("thunk-extern")));
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++__attribute__ ((indirect_branch("thunk-extern")))
++int
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+@@ -0,0 +1,44 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fno-pic" } */
++
++void func0 (void);
++void func1 (void);
++void func2 (void);
++void func3 (void);
++void func4 (void);
++void func4 (void);
++void func5 (void);
++
++__attribute__ ((indirect_branch("thunk-extern")))
++void
++bar (int i)
++{
++ switch (i)
++ {
++ default:
++ func0 ();
++ break;
++ case 1:
++ func1 ();
++ break;
++ case 2:
++ func2 ();
++ break;
++ case 3:
++ func3 ();
++ break;
++ case 4:
++ func4 ();
++ break;
++ case 5:
++ func5 ();
++ break;
++ }
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
+@@ -0,0 +1,42 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++
++void func0 (void);
++void func1 (void);
++void func2 (void);
++void func3 (void);
++void func4 (void);
++void func4 (void);
++void func5 (void);
++
++__attribute__ ((indirect_branch("keep")))
++void
++bar (int i)
++{
++ switch (i)
++ {
++ default:
++ func0 ();
++ break;
++ case 1:
++ func1 ();
++ break;
++ case 2:
++ func2 ();
++ break;
++ case 3:
++ func3 ();
++ break;
++ case 4:
++ func4 ();
++ break;
++ case 5:
++ func5 ();
++ break;
++ }
++}
++
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile { target { ! x32 } } } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
++
++void (*dispatch) (char *);
++char buf[10];
++
++void
++foo (void)
++{
++ dispatch (buf);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "pushq\[ \t\]%rax" { target x32 } } } */
++/* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "bnd call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "bnd ret" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile { target { ! x32 } } } */
++/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
++
++void (*dispatch) (char *);
++char buf[10];
++
++int
++foo (void)
++{
++ dispatch (buf);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "pushq\[ \t\]%rax" { target x32 } } } */
++/* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
++/* { dg-final { scan-assembler "bnd jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "bnd call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "bnd ret" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+@@ -0,0 +1,19 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+@@ -0,0 +1,19 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+@@ -0,0 +1,43 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++
++void func0 (void);
++void func1 (void);
++void func2 (void);
++void func3 (void);
++void func4 (void);
++void func4 (void);
++void func5 (void);
++
++void
++bar (int i)
++{
++ switch (i)
++ {
++ default:
++ func0 ();
++ break;
++ case 1:
++ func1 ();
++ break;
++ case 2:
++ func2 ();
++ break;
++ case 3:
++ func3 ();
++ break;
++ case 4:
++ func4 ();
++ break;
++ case 5:
++ func5 ();
++ break;
++ }
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler-times {\tpause} 1 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+@@ -0,0 +1,21 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch[256];
++
++int
++male_indirect_jump (long offset)
++{
++ dispatch[offset](offset);
++ return 0;
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
++/* { dg-final { scan-assembler-times {\tpause} 1 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+@@ -0,0 +1,44 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++
++void func0 (void);
++void func1 (void);
++void func2 (void);
++void func3 (void);
++void func4 (void);
++void func4 (void);
++void func5 (void);
++
++void
++bar (int i)
++{
++ switch (i)
++ {
++ default:
++ func0 ();
++ break;
++ case 1:
++ func1 ();
++ break;
++ case 2:
++ func2 ();
++ break;
++ case 3:
++ func3 ();
++ break;
++ case 4:
++ func4 ();
++ break;
++ case 5:
++ func5 ();
++ break;
++ }
++}
++
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
diff --git a/development/gcc5/patches/0006-x86-Add-mfunction-return-doc.diff b/development/gcc5/patches/0006-x86-Add-mfunction-return-doc.diff
new file mode 100644
index 0000000000..b40d524892
--- /dev/null
+++ b/development/gcc5/patches/0006-x86-Add-mfunction-return-doc.diff
@@ -0,0 +1,300 @@
+From 357311dd400f7f72d2132f2f94161ece39bf08c6 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:10:44 +0000
+Subject: [PATCH 6/9] x86: Add -mfunction-return=
+
+Add -mfunction-return= option to convert function return to call and
+return thunks. The default is 'keep', which keeps function return
+unmodified. 'thunk' converts function return to call and return thunk.
+'thunk-inline' converts function return to inlined call and return thunk.
+'thunk-extern' converts function return to external call and return
+thunk provided in a separate object file. You can control this behavior
+for a specific function by using the function attribute function_return.
+
+Function return thunk is the same as memory thunk for -mindirect-branch=
+where the return address is at the top of the stack:
+
+__x86_return_thunk:
+ call L2
+L1:
+ pause
+ lfence
+ jmp L1
+L2:
+ lea 8(%rsp), %rsp|lea 4(%esp), %esp
+ ret
+
+and function return becomes
+
+ jmp __x86_return_thunk
+
+-mindirect-branch= tests are updated with -mfunction-return=keep to
+avoid false test failures when -mfunction-return=thunk is added to
+RUNTESTFLAGS for "make check".
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/i386-protos.h (ix86_output_function_return): New.
+ * config/i386/i386.c (ix86_set_indirect_branch_type): Also
+ set function_return_type.
+ (indirect_thunk_name): Add ret_p to indicate thunk for function
+ return.
+ (output_indirect_thunk_function): Pass false to
+ indirect_thunk_name.
+ (ix86_output_indirect_branch_via_reg): Likewise.
+ (ix86_output_indirect_branch_via_push): Likewise.
+ (output_indirect_thunk_function): Create alias for function
+ return thunk if regno < 0.
+ (ix86_output_function_return): New function.
+ (ix86_handle_fndecl_attribute): Handle function_return.
+ (ix86_attribute_table): Add function_return.
+ * config/i386/i386.h (machine_function): Add
+ function_return_type.
+ * config/i386/i386.md (simple_return_internal): Use
+ ix86_output_function_return.
+ (simple_return_internal_long): Likewise.
+ * config/i386/i386.opt (mfunction-return=): New option.
+ (indirect_branch): Mention -mfunction-return=.
+ * doc/extend.texi: Document function_return function attribute.
+ * doc/invoke.texi: Document -mfunction-return= option.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-1.c (dg-options): Add
+ -mfunction-return=keep.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-8.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
+ * gcc.target/i386/ret-thunk-1.c: New test.
+ * gcc.target/i386/ret-thunk-10.c: Likewise.
+ * gcc.target/i386/ret-thunk-11.c: Likewise.
+ * gcc.target/i386/ret-thunk-12.c: Likewise.
+ * gcc.target/i386/ret-thunk-13.c: Likewise.
+ * gcc.target/i386/ret-thunk-14.c: Likewise.
+ * gcc.target/i386/ret-thunk-15.c: Likewise.
+ * gcc.target/i386/ret-thunk-16.c: Likewise.
+ * gcc.target/i386/ret-thunk-2.c: Likewise.
+ * gcc.target/i386/ret-thunk-3.c: Likewise.
+ * gcc.target/i386/ret-thunk-4.c: Likewise.
+ * gcc.target/i386/ret-thunk-5.c: Likewise.
+ * gcc.target/i386/ret-thunk-6.c: Likewise.
+ * gcc.target/i386/ret-thunk-7.c: Likewise.
+ * gcc.target/i386/ret-thunk-8.c: Likewise.
+ * gcc.target/i386/ret-thunk-9.c: Likewise.
+
+i386: Don't use ASM_OUTPUT_DEF for TARGET_MACHO
+
+ASM_OUTPUT_DEF isn't defined for TARGET_MACHO. Use ASM_OUTPUT_LABEL to
+generate the __x86_return_thunk label, instead of the set directive.
+Update testcase to remove the __x86_return_thunk label check. Since
+-fno-pic is ignored on Darwin, update testcases to sscan or "push"
+only on Linux.
+
+gcc/
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/83839
+ * config/i386/i386.c (output_indirect_thunk_function): Use
+ ASM_OUTPUT_LABEL, instead of ASM_OUTPUT_DEF, for TARGET_MACHO
+ for __x86.return_thunk.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/83839
+ * gcc.target/i386/indirect-thunk-1.c: Scan for "push" only on
+ Linux.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-4.c: Likewise.
+ * gcc.target/i386/ret-thunk-10.c: Likewise.
+ * gcc.target/i386/ret-thunk-11.c: Likewise.
+ * gcc.target/i386/ret-thunk-12.c: Likewise.
+ * gcc.target/i386/ret-thunk-13.c: Likewise.
+ * gcc.target/i386/ret-thunk-14.c: Likewise.
+ * gcc.target/i386/ret-thunk-15.c: Likewise.
+ * gcc.target/i386/ret-thunk-9.c: Don't check the
+ __x86_return_thunk label.
+ Scan for "push" only for Linux.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256734 138bc75d-0d04-0410-961f-82ee72b054a4
+
+[Ubuntu note: Dropped indirect-thunk-5.c, indirect-thunk-6.c,
+ indirect-thunk-bnd-3.c, indirect-thunk-bnd-4.c,
+ indirect-thunk-extern-5.c, indirect-thunk-extern-6.c,
+ indirect-thunk-inline-5.c, and indirect-thunk-inline-6.c tests due
+ to gcc 5.4 and earlier not supporting the -fno-plt option.
+ --sbeattie,]
+
+---
+ src/gcc/config/i386/i386-protos.h | 1
+ src/gcc/config/i386/i386.c | 152 +++++++++++-
+ src/gcc/config/i386/i386.h | 3
+ src/gcc/config/i386/i386.md | 9
+ src/gcc/config/i386/i386.opt | 6
+ src/gcc/doc/extend.texi | 9
+ src/gcc/doc/invoke.texi | 13 -
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-1.c | 13 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c | 23 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c | 23 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-16.c | 18 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-2.c | 13 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-3.c | 12
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-4.c | 12
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-5.c | 15 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-6.c | 14 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-7.c | 13 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-8.c | 14 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c | 24 +
+ 48 files changed, 507 insertions(+), 66 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-10.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-11.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-12.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-13.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-14.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-15.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-16.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-8.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-9.c
+
+Index: b/src/gcc/doc/extend.texi
+===================================================================
+--- a/src/gcc/doc/extend.texi
++++ b/src/gcc/doc/extend.texi
+@@ -4129,6 +4129,15 @@ call and jump to call and return thunk.
+ indirect call and jump to inlined call and return thunk.
+ @samp{thunk-extern} converts indirect call and jump to external call
+ and return thunk provided in a separate object file.
++
++@item function_return("@var{choice}")
++@cindex @code{function_return} function attribute, x86
++On x86 targets, the @code{function_return} attribute causes the compiler
++to convert function return with @var{choice}. @samp{keep} keeps function
++return unmodified. @samp{thunk} converts function return to call and
++return thunk. @samp{thunk-inline} converts function return to inlined
++call and return thunk. @samp{thunk-extern} converts function return to
++external call and return thunk provided in a separate object file.
+ @end table
+
+ On the PowerPC, the following options are allowed:
+Index: b/src/gcc/doc/invoke.texi
+===================================================================
+--- a/src/gcc/doc/invoke.texi
++++ b/src/gcc/doc/invoke.texi
+@@ -1091,7 +1091,7 @@ See RS/6000 and PowerPC Options.
+ -msse2avx -mfentry -mrecord-mcount -mnop-mcount -m8bit-idiv @gol
+ -mavx256-split-unaligned-load -mavx256-split-unaligned-store @gol
+ -malign-data=@var{type} -mstack-protector-guard=@var{guard} @gol
+--mindirect-branch=@var{choice}}
++-mindirect-branch=@var{choice} -mfunction-return=@var{choice}}
+
+ @emph{x86 Windows Options}
+ @gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll @gol
+@@ -24029,6 +24029,17 @@ to external call and return thunk provid
+ You can control this behavior for a specific function by using the
+ function attribute @code{indirect_branch}. @xref{Function Attributes}.
+
++@item -mfunction-return=@var{choice}
++@opindex -mfunction-return
++Convert function return with @var{choice}. The default is @samp{keep},
++which keeps function return unmodified. @samp{thunk} converts function
++return to call and return thunk. @samp{thunk-inline} converts function
++return to inlined call and return thunk. @samp{thunk-extern} converts
++function return to external call and return thunk provided in a separate
++object file. You can control this behavior for a specific function by
++using the function attribute @code{function_return}.
++@xref{Function Attributes}.
++
+ @end table
+
+ @c man end
diff --git a/development/gcc5/patches/0006-x86-Add-mfunction-return.diff b/development/gcc5/patches/0006-x86-Add-mfunction-return.diff
new file mode 100644
index 0000000000..1883cc6a51
--- /dev/null
+++ b/development/gcc5/patches/0006-x86-Add-mfunction-return.diff
@@ -0,0 +1,1409 @@
+From 357311dd400f7f72d2132f2f94161ece39bf08c6 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:10:44 +0000
+Subject: [PATCH 6/9] x86: Add -mfunction-return=
+
+Add -mfunction-return= option to convert function return to call and
+return thunks. The default is 'keep', which keeps function return
+unmodified. 'thunk' converts function return to call and return thunk.
+'thunk-inline' converts function return to inlined call and return thunk.
+'thunk-extern' converts function return to external call and return
+thunk provided in a separate object file. You can control this behavior
+for a specific function by using the function attribute function_return.
+
+Function return thunk is the same as memory thunk for -mindirect-branch=
+where the return address is at the top of the stack:
+
+__x86_return_thunk:
+ call L2
+L1:
+ pause
+ lfence
+ jmp L1
+L2:
+ lea 8(%rsp), %rsp|lea 4(%esp), %esp
+ ret
+
+and function return becomes
+
+ jmp __x86_return_thunk
+
+-mindirect-branch= tests are updated with -mfunction-return=keep to
+avoid false test failures when -mfunction-return=thunk is added to
+RUNTESTFLAGS for "make check".
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/i386-protos.h (ix86_output_function_return): New.
+ * config/i386/i386.c (ix86_set_indirect_branch_type): Also
+ set function_return_type.
+ (indirect_thunk_name): Add ret_p to indicate thunk for function
+ return.
+ (output_indirect_thunk_function): Pass false to
+ indirect_thunk_name.
+ (ix86_output_indirect_branch_via_reg): Likewise.
+ (ix86_output_indirect_branch_via_push): Likewise.
+ (output_indirect_thunk_function): Create alias for function
+ return thunk if regno < 0.
+ (ix86_output_function_return): New function.
+ (ix86_handle_fndecl_attribute): Handle function_return.
+ (ix86_attribute_table): Add function_return.
+ * config/i386/i386.h (machine_function): Add
+ function_return_type.
+ * config/i386/i386.md (simple_return_internal): Use
+ ix86_output_function_return.
+ (simple_return_internal_long): Likewise.
+ * config/i386/i386.opt (mfunction-return=): New option.
+ (indirect_branch): Mention -mfunction-return=.
+ * doc/extend.texi: Document function_return function attribute.
+ * doc/invoke.texi: Document -mfunction-return= option.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-1.c (dg-options): Add
+ -mfunction-return=keep.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-8.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
+ * gcc.target/i386/ret-thunk-1.c: New test.
+ * gcc.target/i386/ret-thunk-10.c: Likewise.
+ * gcc.target/i386/ret-thunk-11.c: Likewise.
+ * gcc.target/i386/ret-thunk-12.c: Likewise.
+ * gcc.target/i386/ret-thunk-13.c: Likewise.
+ * gcc.target/i386/ret-thunk-14.c: Likewise.
+ * gcc.target/i386/ret-thunk-15.c: Likewise.
+ * gcc.target/i386/ret-thunk-16.c: Likewise.
+ * gcc.target/i386/ret-thunk-2.c: Likewise.
+ * gcc.target/i386/ret-thunk-3.c: Likewise.
+ * gcc.target/i386/ret-thunk-4.c: Likewise.
+ * gcc.target/i386/ret-thunk-5.c: Likewise.
+ * gcc.target/i386/ret-thunk-6.c: Likewise.
+ * gcc.target/i386/ret-thunk-7.c: Likewise.
+ * gcc.target/i386/ret-thunk-8.c: Likewise.
+ * gcc.target/i386/ret-thunk-9.c: Likewise.
+
+i386: Don't use ASM_OUTPUT_DEF for TARGET_MACHO
+
+ASM_OUTPUT_DEF isn't defined for TARGET_MACHO. Use ASM_OUTPUT_LABEL to
+generate the __x86_return_thunk label, instead of the set directive.
+Update testcase to remove the __x86_return_thunk label check. Since
+-fno-pic is ignored on Darwin, update testcases to sscan or "push"
+only on Linux.
+
+gcc/
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/83839
+ * config/i386/i386.c (output_indirect_thunk_function): Use
+ ASM_OUTPUT_LABEL, instead of ASM_OUTPUT_DEF, for TARGET_MACHO
+ for __x86.return_thunk.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/83839
+ * gcc.target/i386/indirect-thunk-1.c: Scan for "push" only on
+ Linux.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-4.c: Likewise.
+ * gcc.target/i386/ret-thunk-10.c: Likewise.
+ * gcc.target/i386/ret-thunk-11.c: Likewise.
+ * gcc.target/i386/ret-thunk-12.c: Likewise.
+ * gcc.target/i386/ret-thunk-13.c: Likewise.
+ * gcc.target/i386/ret-thunk-14.c: Likewise.
+ * gcc.target/i386/ret-thunk-15.c: Likewise.
+ * gcc.target/i386/ret-thunk-9.c: Don't check the
+ __x86_return_thunk label.
+ Scan for "push" only for Linux.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256734 138bc75d-0d04-0410-961f-82ee72b054a4
+
+[Ubuntu note: Dropped indirect-thunk-5.c, indirect-thunk-6.c,
+ indirect-thunk-bnd-3.c, indirect-thunk-bnd-4.c,
+ indirect-thunk-extern-5.c, indirect-thunk-extern-6.c,
+ indirect-thunk-inline-5.c, and indirect-thunk-inline-6.c tests due
+ to gcc 5.4 and earlier not supporting the -fno-plt option.
+ --sbeattie,]
+
+---
+ src/gcc/config/i386/i386-protos.h | 1
+ src/gcc/config/i386/i386.c | 152 +++++++++++-
+ src/gcc/config/i386/i386.h | 3
+ src/gcc/config/i386/i386.md | 9
+ src/gcc/config/i386/i386.opt | 6
+ src/gcc/doc/extend.texi | 9
+ src/gcc/doc/invoke.texi | 13 -
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c | 4
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c | 4
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-1.c | 13 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c | 23 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c | 23 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c | 22 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-16.c | 18 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-2.c | 13 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-3.c | 12
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-4.c | 12
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-5.c | 15 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-6.c | 14 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-7.c | 13 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-8.c | 14 +
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c | 24 +
+ 48 files changed, 507 insertions(+), 66 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-10.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-11.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-12.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-13.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-14.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-15.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-16.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-3.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-4.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-5.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-6.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-7.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-8.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-9.c
+
+Index: b/src/gcc/config/i386/i386-protos.h
+===================================================================
+--- a/src/gcc/config/i386/i386-protos.h
++++ b/src/gcc/config/i386/i386-protos.h
+@@ -307,6 +307,7 @@ extern enum attr_cpu ix86_schedule;
+
+ extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op);
+ extern const char * ix86_output_indirect_jmp (rtx call_op, bool ret_p);
++extern const char * ix86_output_function_return (bool long_p);
+
+ #ifdef RTX_CODE
+ /* Target data for multipass lookahead scheduling.
+Index: b/src/gcc/config/i386/i386.c
+===================================================================
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -5166,6 +5166,31 @@ ix86_set_indirect_branch_type (tree fnde
+ else
+ cfun->machine->indirect_branch_type = ix86_indirect_branch;
+ }
++
++ if (cfun->machine->function_return_type == indirect_branch_unset)
++ {
++ tree attr = lookup_attribute ("function_return",
++ DECL_ATTRIBUTES (fndecl));
++ if (attr != NULL)
++ {
++ tree args = TREE_VALUE (attr);
++ if (args == NULL)
++ gcc_unreachable ();
++ tree cst = TREE_VALUE (args);
++ if (strcmp (TREE_STRING_POINTER (cst), "keep") == 0)
++ cfun->machine->function_return_type = indirect_branch_keep;
++ else if (strcmp (TREE_STRING_POINTER (cst), "thunk") == 0)
++ cfun->machine->function_return_type = indirect_branch_thunk;
++ else if (strcmp (TREE_STRING_POINTER (cst), "thunk-inline") == 0)
++ cfun->machine->function_return_type = indirect_branch_thunk_inline;
++ else if (strcmp (TREE_STRING_POINTER (cst), "thunk-extern") == 0)
++ cfun->machine->function_return_type = indirect_branch_thunk_extern;
++ else
++ gcc_unreachable ();
++ }
++ else
++ cfun->machine->function_return_type = ix86_function_return;
++ }
+ }
+
+ /* Establish appropriate back-end context for processing the function
+@@ -9753,8 +9778,12 @@ static int indirect_thunks_bnd_used;
+ /* Fills in the label name that should be used for the indirect thunk. */
+
+ static void
+-indirect_thunk_name (char name[32], int regno, bool need_bnd_p)
++indirect_thunk_name (char name[32], int regno, bool need_bnd_p,
++ bool ret_p)
+ {
++ if (regno >= 0 && ret_p)
++ gcc_unreachable ();
++
+ if (USE_HIDDEN_LINKONCE)
+ {
+ const char *bnd = need_bnd_p ? "_bnd" : "";
+@@ -9769,7 +9798,10 @@ indirect_thunk_name (char name[32], int
+ bnd, reg_prefix, reg_names[regno]);
+ }
+ else
+- sprintf (name, "__x86_indirect_thunk%s", bnd);
++ {
++ const char *ret = ret_p ? "return" : "indirect";
++ sprintf (name, "__x86_%s_thunk%s", ret, bnd);
++ }
+ }
+ else
+ {
+@@ -9782,10 +9814,20 @@ indirect_thunk_name (char name[32], int
+ }
+ else
+ {
+- if (need_bnd_p)
+- ASM_GENERATE_INTERNAL_LABEL (name, "LITB", 0);
++ if (ret_p)
++ {
++ if (need_bnd_p)
++ ASM_GENERATE_INTERNAL_LABEL (name, "LRTB", 0);
++ else
++ ASM_GENERATE_INTERNAL_LABEL (name, "LRT", 0);
++ }
+ else
+- ASM_GENERATE_INTERNAL_LABEL (name, "LIT", 0);
++ {
++ if (need_bnd_p)
++ ASM_GENERATE_INTERNAL_LABEL (name, "LITB", 0);
++ else
++ ASM_GENERATE_INTERNAL_LABEL (name, "LIT", 0);
++ }
+ }
+ }
+ }
+@@ -9880,7 +9922,7 @@ output_indirect_thunk_function (bool nee
+ tree decl;
+
+ /* Create __x86_indirect_thunk/__x86_indirect_thunk_bnd. */
+- indirect_thunk_name (name, regno, need_bnd_p);
++ indirect_thunk_name (name, regno, need_bnd_p, false);
+ decl = build_decl (BUILTINS_LOCATION, FUNCTION_DECL,
+ get_identifier (name),
+ build_function_type_list (void_type_node, NULL_TREE));
+@@ -9923,6 +9965,36 @@ output_indirect_thunk_function (bool nee
+ ASM_OUTPUT_LABEL (asm_out_file, name);
+ }
+
++ if (regno < 0)
++ {
++ /* Create alias for __x86.return_thunk/__x86.return_thunk_bnd. */
++ char alias[32];
++
++ indirect_thunk_name (alias, regno, need_bnd_p, true);
++#if TARGET_MACHO
++ if (TARGET_MACHO)
++ {
++ fputs ("\t.weak_definition\t", asm_out_file);
++ assemble_name (asm_out_file, alias);
++ fputs ("\n\t.private_extern\t", asm_out_file);
++ assemble_name (asm_out_file, alias);
++ putc ('\n', asm_out_file);
++ ASM_OUTPUT_LABEL (asm_out_file, alias);
++ }
++#else
++ ASM_OUTPUT_DEF (asm_out_file, alias, name);
++ if (USE_HIDDEN_LINKONCE)
++ {
++ fputs ("\t.globl\t", asm_out_file);
++ assemble_name (asm_out_file, alias);
++ putc ('\n', asm_out_file);
++ fputs ("\t.hidden\t", asm_out_file);
++ assemble_name (asm_out_file, alias);
++ putc ('\n', asm_out_file);
++ }
++#endif
++ }
++
+ DECL_INITIAL (decl) = make_node (BLOCK);
+ current_function_decl = decl;
+ allocate_struct_function (decl, false);
+@@ -26121,7 +26193,7 @@ ix86_output_indirect_branch_via_reg (rtx
+ else
+ indirect_thunks_used |= 1 << i;
+ }
+- indirect_thunk_name (thunk_name_buf, regno, need_bnd_p);
++ indirect_thunk_name (thunk_name_buf, regno, need_bnd_p, false);
+ thunk_name = thunk_name_buf;
+ }
+ else
+@@ -26230,7 +26302,7 @@ ix86_output_indirect_branch_via_push (rt
+ else
+ indirect_thunk_needed = true;
+ }
+- indirect_thunk_name (thunk_name_buf, regno, need_bnd_p);
++ indirect_thunk_name (thunk_name_buf, regno, need_bnd_p, false);
+ thunk_name = thunk_name_buf;
+ }
+ else
+@@ -26365,6 +26437,46 @@ ix86_output_indirect_jmp (rtx call_op, b
+ return "%!jmp\t%A0";
+ }
+
++/* Output function return. CALL_OP is the jump target. Add a REP
++ prefix to RET if LONG_P is true and function return is kept. */
++
++const char *
++ix86_output_function_return (bool long_p)
++{
++ if (cfun->machine->function_return_type != indirect_branch_keep)
++ {
++ char thunk_name[32];
++ bool need_bnd_p = ix86_bnd_prefixed_insn_p (current_output_insn);
++
++ if (cfun->machine->function_return_type
++ != indirect_branch_thunk_inline)
++ {
++ bool need_thunk = (cfun->machine->function_return_type
++ == indirect_branch_thunk);
++ indirect_thunk_name (thunk_name, -1, need_bnd_p, true);
++ if (need_bnd_p)
++ {
++ indirect_thunk_bnd_needed |= need_thunk;
++ fprintf (asm_out_file, "\tbnd jmp\t%s\n", thunk_name);
++ }
++ else
++ {
++ indirect_thunk_needed |= need_thunk;
++ fprintf (asm_out_file, "\tjmp\t%s\n", thunk_name);
++ }
++ }
++ else
++ output_indirect_thunk (need_bnd_p, -1);
++
++ return "";
++ }
++
++ if (!long_p || ix86_bnd_prefixed_insn_p (current_output_insn))
++ return "%!ret";
++
++ return "rep%; ret";
++}
++
+ /* Output the assembly for a call instruction. */
+
+ const char *
+@@ -43625,6 +43737,28 @@ ix86_handle_fndecl_attribute (tree *node
+ }
+ }
+
++ if (is_attribute_p ("function_return", name))
++ {
++ tree cst = TREE_VALUE (args);
++ if (TREE_CODE (cst) != STRING_CST)
++ {
++ warning (OPT_Wattributes,
++ "%qE attribute requires a string constant argument",
++ name);
++ *no_add_attrs = true;
++ }
++ else if (strcmp (TREE_STRING_POINTER (cst), "keep") != 0
++ && strcmp (TREE_STRING_POINTER (cst), "thunk") != 0
++ && strcmp (TREE_STRING_POINTER (cst), "thunk-inline") != 0
++ && strcmp (TREE_STRING_POINTER (cst), "thunk-extern") != 0)
++ {
++ warning (OPT_Wattributes,
++ "argument to %qE attribute is not "
++ "(keep|thunk|thunk-inline|thunk-extern)", name);
++ *no_add_attrs = true;
++ }
++ }
++
+ return NULL_TREE;
+ }
+
+@@ -47519,6 +47653,8 @@ static const struct attribute_spec ix86_
+ ix86_handle_callee_pop_aggregate_return, true },
+ { "indirect_branch", 1, 1, true, false, false,
+ ix86_handle_fndecl_attribute, false },
++ { "function_return", 1, 1, true, false, false,
++ ix86_handle_fndecl_attribute, false },
+
+ /* End element. */
+ { NULL, 0, 0, false, false, false, NULL, false }
+Index: b/src/gcc/config/i386/i386.h
+===================================================================
+--- a/src/gcc/config/i386/i386.h
++++ b/src/gcc/config/i386/i386.h
+@@ -2562,6 +2562,9 @@ struct GTY(()) machine_function {
+ "indirect_jump" or "tablejump". */
+ BOOL_BITFIELD has_local_indirect_jump : 1;
+
++ /* How to generate function return. */
++ ENUM_BITFIELD(indirect_branch) function_return_type : 3;
++
+ /* During prologue/epilogue generation, the current frame state.
+ Otherwise, the frame state at the end of the prologue. */
+ struct machine_frame_state fs;
+Index: b/src/gcc/config/i386/i386.md
+===================================================================
+--- a/src/gcc/config/i386/i386.md
++++ b/src/gcc/config/i386/i386.md
+@@ -12169,7 +12169,7 @@
+ (define_insn "simple_return_internal"
+ [(simple_return)]
+ "reload_completed"
+- "%!ret"
++ "* return ix86_output_function_return (false);"
+ [(set_attr "length_nobnd" "1")
+ (set_attr "atom_unit" "jeu")
+ (set_attr "length_immediate" "0")
+@@ -12182,12 +12182,7 @@
+ [(simple_return)
+ (unspec [(const_int 0)] UNSPEC_REP)]
+ "reload_completed"
+-{
+- if (ix86_bnd_prefixed_insn_p (insn))
+- return "%!ret";
+-
+- return "rep%; ret";
+-}
++ "* return ix86_output_function_return (true);"
+ [(set_attr "length" "2")
+ (set_attr "atom_unit" "jeu")
+ (set_attr "length_immediate" "0")
+Index: b/src/gcc/config/i386/i386.opt
+===================================================================
+--- a/src/gcc/config/i386/i386.opt
++++ b/src/gcc/config/i386/i386.opt
+@@ -881,9 +881,13 @@ mindirect-branch=
+ Target Report RejectNegative Joined Enum(indirect_branch) Var(ix86_indirect_branch) Init(indirect_branch_keep)
+ Convert indirect call and jump to call and return thunks.
+
++mfunction-return=
++Target Report RejectNegative Joined Enum(indirect_branch) Var(ix86_function_return) Init(indirect_branch_keep)
++Convert function return to call and return thunk.
++
+ Enum
+ Name(indirect_branch) Type(enum indirect_branch)
+-Known indirect branch choices (for use with the -mindirect-branch= option):
++Known indirect branch choices (for use with the -mindirect-branch=/-mfunction-return= options):
+
+ EnumValue
+ Enum(indirect_branch) String(keep) Value(indirect_branch_keep)
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -11,7 +11,7 @@ male_indirect_jump (long offset)
+ dispatch(offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -11,7 +11,7 @@ male_indirect_jump (long offset)
+ dispatch[offset](offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+@@ -35,7 +35,7 @@ bar (int i)
+ }
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -14,7 +14,7 @@ male_indirect_jump (long offset)
+ dispatch(offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ dispatch[offset](offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -14,7 +14,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler {\tpause} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -13,7 +13,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler {\tpause} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -14,7 +14,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -13,7 +13,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+@@ -36,7 +36,7 @@ bar (int i)
+ }
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" } } */
+ /* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-8.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile { target { ! x32 } } } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
+
+ void (*dispatch) (char *);
+ char buf[10];
+@@ -10,7 +10,7 @@ foo (void)
+ dispatch (buf);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "pushq\[ \t\]%rax" { target x32 } } } */
+ /* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile { target { ! x32 } } } */
+-/* { dg-options "-O2 -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
+
+ void (*dispatch) (char *);
+ char buf[10];
+@@ -11,7 +11,7 @@ foo (void)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "pushq\[ \t\]%rax" { target x32 } } } */
+ /* { dg-final { scan-assembler "bnd jmp\[ \t\]*__x86_indirect_thunk_bnd" } } */
+ /* { dg-final { scan-assembler "bnd jmp\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -11,7 +11,7 @@ male_indirect_jump (long offset)
+ dispatch(offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -11,7 +11,7 @@ male_indirect_jump (long offset)
+ dispatch[offset](offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 1 { target { ! x32 } } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+@@ -35,7 +35,7 @@ bar (int i)
+ }
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
+ /* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -11,7 +11,7 @@ male_indirect_jump (long offset)
+ dispatch(offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+ /* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+ /* { dg-final { scan-assembler {\tpause} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -11,7 +11,7 @@ male_indirect_jump (long offset)
+ dispatch[offset](offset);
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+ /* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+ /* { dg-final { scan-assembler {\tpause} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler-times {\tpause} 1 } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+@@ -12,7 +12,7 @@ male_indirect_jump (long offset)
+ return 0;
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?dispatch" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 2 } } */
+ /* { dg-final { scan-assembler-times {\tpause} 1 } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+@@ -35,7 +35,7 @@ bar (int i)
+ }
+ }
+
+-/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*\.L\[0-9\]+\\(,%" { target { { ! x32 } && *-*-linux* } } } } */
+ /* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+ /* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
+ /* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-1.c
+@@ -0,0 +1,13 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk" } */
++
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c
+@@ -0,0 +1,23 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk-inline -mindirect-branch=thunk -fno-pic" } */
++
++extern void (*bar) (void);
++
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-times {\tpause} 2 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 2 } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?bar" { target { { ! x32 } && *-*-linux* } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk:" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target { x32 } } } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk_(r|e)ax:" { target { x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c
+@@ -0,0 +1,23 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk-extern -mindirect-branch=thunk -fno-pic" } */
++
++extern void (*bar) (void);
++
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-times {\tpause} 1 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?bar" { target { { ! x32 } && *-*-linux* } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk:" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target { x32 } } } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk_(r|e)ax:" { target { x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++
++extern void (*bar) (void);
++
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-times {\tpause} 1 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk:" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target { x32 } } } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk_(r|e)ax:" { target { x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++
++extern void (*bar) (void);
++extern int foo (void) __attribute__ ((function_return("thunk")));
++
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-times {\tpause} 2 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 2 } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?bar" { target { { ! x32 } && *-*-linux* } } } } */
++/* { dg-final { scan-assembler-times "jmp\[ \t\]*\.LIND" 3 } } */
++/* { dg-final { scan-assembler-times "call\[ \t\]*\.LIND" 3 } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target { x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++
++extern void (*bar) (void);
++
++__attribute__ ((function_return("thunk-inline")))
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler-times {\tpause} 1 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?bar" { target { { ! x32 } && *-*-linux* } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target { x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=keep -fno-pic" } */
++
++extern void (*bar) (void);
++
++__attribute__ ((function_return("thunk-extern"), indirect_branch("thunk")))
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-times {\tpause} 1 } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?bar" { target { { ! x32 } && *-*-linux* } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target x32 } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-16.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-16.c
+@@ -0,0 +1,18 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk-inline -mindirect-branch=thunk-extern -fno-pic" } */
++
++extern void (*bar) (void);
++
++__attribute__ ((function_return("keep"), indirect_branch("keep")))
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
++/* { dg-final { scan-assembler-not "__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-2.c
+@@ -0,0 +1,13 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk-inline" } */
++
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-3.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-3.c
+@@ -0,0 +1,12 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk-extern" } */
++
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-4.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-4.c
+@@ -0,0 +1,12 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep" } */
++
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-5.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-5.c
+@@ -0,0 +1,15 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep" } */
++
++extern void foo (void) __attribute__ ((function_return("thunk")));
++
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-6.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-6.c
+@@ -0,0 +1,14 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep" } */
++
++__attribute__ ((function_return("thunk-inline")))
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler {\tlfence} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-7.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-7.c
+@@ -0,0 +1,13 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=keep" } */
++
++__attribute__ ((function_return("thunk-extern")))
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-8.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-8.c
+@@ -0,0 +1,14 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk-inline" } */
++
++extern void foo (void) __attribute__ ((function_return("keep")));
++
++void
++foo (void)
++{
++}
++
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler-not {\t(lfence|pause)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c
+@@ -0,0 +1,24 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mfunction-return=thunk -mindirect-branch=thunk -fno-pic" } */
++
++extern void (*bar) (void);
++
++int
++foo (void)
++{
++ bar ();
++ return 0;
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_return_thunk" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "__x86_indirect_thunk:" } } */
++/* { dg-final { scan-assembler-times {\tpause} 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times {\tlfence} 1 { target { ! x32 } } } } */
++/* { dg-final { scan-assembler "push(?:l|q)\[ \t\]*_?bar" { target { { ! x32 } && *-*-linux* } } } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk" { target { ! x32 } } } } */
++/* { dg-final { scan-assembler-times {\tpause} 2 { target { x32 } } } } */
++/* { dg-final { scan-assembler-times {\tlfence} 2 { target { x32 } } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_(r|e)ax" { target { x32 } } } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" { target x32 } } } */
diff --git a/development/gcc5/patches/0007-x86-Add-mindirect-branch-register-doc.diff b/development/gcc5/patches/0007-x86-Add-mindirect-branch-register-doc.diff
new file mode 100644
index 0000000000..9780bfc918
--- /dev/null
+++ b/development/gcc5/patches/0007-x86-Add-mindirect-branch-register-doc.diff
@@ -0,0 +1,231 @@
+From 86118fbdbafe6af54b2da467e1073c49e1742116 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:17:49 +0000
+Subject: [PATCH 7/9] x86: Add -mindirect-branch-register (documentation)
+
+Add -mindirect-branch-register to force indirect branch via register.
+This is implemented by disabling patterns of indirect branch via memory,
+similar to TARGET_X32.
+
+-mindirect-branch= and -mfunction-return= tests are updated with
+-mno-indirect-branch-register to avoid false test failures when
+-mindirect-branch-register is added to RUNTESTFLAGS for "make check".
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/constraints.md (Bs): Disallow memory operand for
+ -mindirect-branch-register.
+ (Bw): Likewise.
+ * config/i386/predicates.md (indirect_branch_operand): Likewise.
+ (GOT_memory_operand): Likewise.
+ (call_insn_operand): Likewise.
+ (sibcall_insn_operand): Likewise.
+ (GOT32_symbol_operand): Likewise.
+ * config/i386/i386.md (indirect_jump): Call convert_memory_address
+ for -mindirect-branch-register.
+ (tablejump): Likewise.
+ (*sibcall_memory): Likewise.
+ (*sibcall_value_memory): Likewise.
+ Disallow peepholes of indirect call and jump via memory for
+ -mindirect-branch-register.
+ (*call_pop): Replace m with Bw.
+ (*call_value_pop): Likewise.
+ (*sibcall_pop_memory): Replace m with Bs.
+ * config/i386/i386.opt (mindirect-branch-register): New option.
+ * doc/invoke.texi: Document -mindirect-branch-register option.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-1.c (dg-options): Add
+ -mno-indirect-branch-register.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
+ * gcc.target/i386/ret-thunk-10.c: Likewise.
+ * gcc.target/i386/ret-thunk-11.c: Likewise.
+ * gcc.target/i386/ret-thunk-12.c: Likewise.
+ * gcc.target/i386/ret-thunk-13.c: Likewise.
+ * gcc.target/i386/ret-thunk-14.c: Likewise.
+ * gcc.target/i386/ret-thunk-15.c: Likewise.
+ * gcc.target/i386/ret-thunk-9.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-1.c: New test.
+ * gcc.target/i386/indirect-thunk-register-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-3.c: Likewise.
+
+i386: Rename to ix86_indirect_branch_register
+
+Rename the variable for -mindirect-branch-register to
+ix86_indirect_branch_register to match the command-line option name.
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/constraints.md (Bs): Replace
+ ix86_indirect_branch_thunk_register with
+ ix86_indirect_branch_register.
+ (Bw): Likewise.
+ * config/i386/i386.md (indirect_jump): Likewise.
+ (tablejump): Likewise.
+ (*sibcall_memory): Likewise.
+ (*sibcall_value_memory): Likewise.
+ Peepholes of indirect call and jump via memory: Likewise.
+ * config/i386/i386.opt: Likewise.
+ * config/i386/predicates.md (indirect_branch_operand): Likewise.
+ (GOT_memory_operand): Likewise.
+ (call_insn_operand): Likewise.
+ (sibcall_insn_operand): Likewise.
+ (GOT32_symbol_operand): Likewise.
+
+x86: Rewrite ix86_indirect_branch_register logic
+
+Rewrite ix86_indirect_branch_register logic with
+
+(and (not (match_test "ix86_indirect_branch_register"))
+ (original condition before r256662))
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/predicates.md (constant_call_address_operand):
+ Rewrite ix86_indirect_branch_register logic.
+ (sibcall_insn_operand): Likewise.
+
+Don't check ix86_indirect_branch_register for GOT operand
+
+Since GOT_memory_operand and GOT32_symbol_operand are simple pattern
+matches, don't check ix86_indirect_branch_register here. If needed,
+-mindirect-branch= will convert indirect branch via GOT slot to a call
+and return thunk.
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/constraints.md (Bs): Update
+ ix86_indirect_branch_register check. Don't check
+ ix86_indirect_branch_register with GOT_memory_operand.
+ (Bw): Likewise.
+ * config/i386/predicates.md (GOT_memory_operand): Don't check
+ ix86_indirect_branch_register here.
+ (GOT32_symbol_operand): Likewise.
+
+i386: Rewrite indirect_branch_operand logic
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/predicates.md (indirect_branch_operand): Rewrite
+ ix86_indirect_branch_register logic.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256735 138bc75d-0d04-0410-961f-82ee72b054a4
+
+[Ubuntu note: Dropped indirect-thunk-5.c, indirect-thunk-6.c,
+ indirect-thunk-bnd-3.c, indirect-thunk-bnd-4.c,
+ indirect-thunk-extern-5.c, indirect-thunk-extern-6.c,
+ indirect-thunk-inline-5.c, and indirect-thunk-inline-6.c tests due
+ to gcc 5.4 and earlier not supporting the -fno-plt option.
+ --sbeattie,]
+---
+ src/gcc/config/i386/constraints.md | 6 +
+ src/gcc/config/i386/i386.md | 34 ++++++----
+ src/gcc/config/i386/i386.opt | 4 +
+ src/gcc/config/i386/predicates.md | 9 +-
+ src/gcc/doc/invoke.texi | 7 +-
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-1.c | 22 ++++++
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-2.c | 20 +++++
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-3.c | 19 +++++
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c | 2
+ 39 files changed, 134 insertions(+), 49 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-3.c
+
+Index: b/src/gcc/doc/invoke.texi
+===================================================================
+--- a/src/gcc/doc/invoke.texi
++++ b/src/gcc/doc/invoke.texi
+@@ -1091,7 +1091,8 @@ See RS/6000 and PowerPC Options.
+ -msse2avx -mfentry -mrecord-mcount -mnop-mcount -m8bit-idiv @gol
+ -mavx256-split-unaligned-load -mavx256-split-unaligned-store @gol
+ -malign-data=@var{type} -mstack-protector-guard=@var{guard} @gol
+--mindirect-branch=@var{choice} -mfunction-return=@var{choice}}
++-mindirect-branch=@var{choice} -mfunction-return=@var{choice} @gol
++-mindirect-branch-register}
+
+ @emph{x86 Windows Options}
+ @gccoptlist{-mconsole -mcygwin -mno-cygwin -mdll @gol
+@@ -24040,6 +24041,10 @@ object file. You can control this behav
+ using the function attribute @code{function_return}.
+ @xref{Function Attributes}.
+
++@item -mindirect-branch-register
++@opindex -mindirect-branch-register
++Force indirect call and jump via register.
++
+ @end table
+
+ @c man end
diff --git a/development/gcc5/patches/0007-x86-Add-mindirect-branch-register.diff b/development/gcc5/patches/0007-x86-Add-mindirect-branch-register.diff
new file mode 100644
index 0000000000..211368991f
--- /dev/null
+++ b/development/gcc5/patches/0007-x86-Add-mindirect-branch-register.diff
@@ -0,0 +1,812 @@
+From 86118fbdbafe6af54b2da467e1073c49e1742116 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:17:49 +0000
+Subject: [PATCH 7/9] x86: Add -mindirect-branch-register
+
+Add -mindirect-branch-register to force indirect branch via register.
+This is implemented by disabling patterns of indirect branch via memory,
+similar to TARGET_X32.
+
+-mindirect-branch= and -mfunction-return= tests are updated with
+-mno-indirect-branch-register to avoid false test failures when
+-mindirect-branch-register is added to RUNTESTFLAGS for "make check".
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/constraints.md (Bs): Disallow memory operand for
+ -mindirect-branch-register.
+ (Bw): Likewise.
+ * config/i386/predicates.md (indirect_branch_operand): Likewise.
+ (GOT_memory_operand): Likewise.
+ (call_insn_operand): Likewise.
+ (sibcall_insn_operand): Likewise.
+ (GOT32_symbol_operand): Likewise.
+ * config/i386/i386.md (indirect_jump): Call convert_memory_address
+ for -mindirect-branch-register.
+ (tablejump): Likewise.
+ (*sibcall_memory): Likewise.
+ (*sibcall_value_memory): Likewise.
+ Disallow peepholes of indirect call and jump via memory for
+ -mindirect-branch-register.
+ (*call_pop): Replace m with Bw.
+ (*call_value_pop): Likewise.
+ (*sibcall_pop_memory): Replace m with Bs.
+ * config/i386/i386.opt (mindirect-branch-register): New option.
+ * doc/invoke.texi: Document -mindirect-branch-register option.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-1.c (dg-options): Add
+ -mno-indirect-branch-register.
+ * gcc.target/i386/indirect-thunk-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-bnd-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-1.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-3.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-4.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-5.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-6.c: Likewise.
+ * gcc.target/i386/indirect-thunk-inline-7.c: Likewise.
+ * gcc.target/i386/ret-thunk-10.c: Likewise.
+ * gcc.target/i386/ret-thunk-11.c: Likewise.
+ * gcc.target/i386/ret-thunk-12.c: Likewise.
+ * gcc.target/i386/ret-thunk-13.c: Likewise.
+ * gcc.target/i386/ret-thunk-14.c: Likewise.
+ * gcc.target/i386/ret-thunk-15.c: Likewise.
+ * gcc.target/i386/ret-thunk-9.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-1.c: New test.
+ * gcc.target/i386/indirect-thunk-register-2.c: Likewise.
+ * gcc.target/i386/indirect-thunk-register-3.c: Likewise.
+
+i386: Rename to ix86_indirect_branch_register
+
+Rename the variable for -mindirect-branch-register to
+ix86_indirect_branch_register to match the command-line option name.
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/constraints.md (Bs): Replace
+ ix86_indirect_branch_thunk_register with
+ ix86_indirect_branch_register.
+ (Bw): Likewise.
+ * config/i386/i386.md (indirect_jump): Likewise.
+ (tablejump): Likewise.
+ (*sibcall_memory): Likewise.
+ (*sibcall_value_memory): Likewise.
+ Peepholes of indirect call and jump via memory: Likewise.
+ * config/i386/i386.opt: Likewise.
+ * config/i386/predicates.md (indirect_branch_operand): Likewise.
+ (GOT_memory_operand): Likewise.
+ (call_insn_operand): Likewise.
+ (sibcall_insn_operand): Likewise.
+ (GOT32_symbol_operand): Likewise.
+
+x86: Rewrite ix86_indirect_branch_register logic
+
+Rewrite ix86_indirect_branch_register logic with
+
+(and (not (match_test "ix86_indirect_branch_register"))
+ (original condition before r256662))
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/predicates.md (constant_call_address_operand):
+ Rewrite ix86_indirect_branch_register logic.
+ (sibcall_insn_operand): Likewise.
+
+Don't check ix86_indirect_branch_register for GOT operand
+
+Since GOT_memory_operand and GOT32_symbol_operand are simple pattern
+matches, don't check ix86_indirect_branch_register here. If needed,
+-mindirect-branch= will convert indirect branch via GOT slot to a call
+and return thunk.
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/constraints.md (Bs): Update
+ ix86_indirect_branch_register check. Don't check
+ ix86_indirect_branch_register with GOT_memory_operand.
+ (Bw): Likewise.
+ * config/i386/predicates.md (GOT_memory_operand): Don't check
+ ix86_indirect_branch_register here.
+ (GOT32_symbol_operand): Likewise.
+
+i386: Rewrite indirect_branch_operand logic
+
+ Backport from mainline
+ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/predicates.md (indirect_branch_operand): Rewrite
+ ix86_indirect_branch_register logic.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256735 138bc75d-0d04-0410-961f-82ee72b054a4
+
+[Ubuntu note: Dropped indirect-thunk-5.c, indirect-thunk-6.c,
+ indirect-thunk-bnd-3.c, indirect-thunk-bnd-4.c,
+ indirect-thunk-extern-5.c, indirect-thunk-extern-6.c,
+ indirect-thunk-inline-5.c, and indirect-thunk-inline-6.c tests due
+ to gcc 5.4 and earlier not supporting the -fno-plt option.
+ --sbeattie,]
+---
+ src/gcc/config/i386/constraints.md | 6 +
+ src/gcc/config/i386/i386.md | 34 ++++++----
+ src/gcc/config/i386/i386.opt | 4 +
+ src/gcc/config/i386/predicates.md | 9 +-
+ src/gcc/doc/invoke.texi | 7 +-
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c | 2
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-1.c | 22 ++++++
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-2.c | 20 +++++
+ src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-3.c | 19 +++++
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c | 2
+ src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c | 2
+ 39 files changed, 134 insertions(+), 49 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-1.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-2.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-3.c
+
+Index: b/src/gcc/config/i386/constraints.md
+===================================================================
+--- a/src/gcc/config/i386/constraints.md
++++ b/src/gcc/config/i386/constraints.md
+@@ -157,12 +157,14 @@
+
+ (define_constraint "Bs"
+ "@internal Sibcall memory operand."
+- (and (not (match_test "TARGET_X32"))
++ (and (not (match_test "ix86_indirect_branch_register"))
++ (not (match_test "TARGET_X32"))
+ (match_operand 0 "sibcall_memory_operand")))
+
+ (define_constraint "Bw"
+ "@internal Call memory operand."
+- (and (not (match_test "TARGET_X32"))
++ (and (not (match_test "ix86_indirect_branch_register"))
++ (not (match_test "TARGET_X32"))
+ (match_operand 0 "memory_operand")))
+
+ (define_constraint "Bz"
+Index: b/src/gcc/config/i386/i386.md
+===================================================================
+--- a/src/gcc/config/i386/i386.md
++++ b/src/gcc/config/i386/i386.md
+@@ -11554,7 +11554,7 @@
+ [(set (pc) (match_operand 0 "indirect_branch_operand"))]
+ ""
+ {
+- if (TARGET_X32)
++ if (TARGET_X32 || ix86_indirect_branch_register)
+ operands[0] = convert_memory_address (word_mode, operands[0]);
+ cfun->machine->has_local_indirect_jump = true;
+ })
+@@ -11607,7 +11607,7 @@
+ OPTAB_DIRECT);
+ }
+
+- if (TARGET_X32)
++ if (TARGET_X32 || ix86_indirect_branch_register)
+ operands[0] = convert_memory_address (word_mode, operands[0]);
+ cfun->machine->has_local_indirect_jump = true;
+ })
+@@ -11764,7 +11764,7 @@
+ [(call (mem:QI (match_operand:W 0 "memory_operand" "m"))
+ (match_operand 1))
+ (unspec [(const_int 0)] UNSPEC_PEEPSIB)]
+- "!TARGET_X32"
++ "!TARGET_X32 && !ix86_indirect_branch_register"
+ "* return ix86_output_call_insn (insn, operands[0]);"
+ [(set_attr "type" "call")])
+
+@@ -11773,7 +11773,9 @@
+ (match_operand:W 1 "memory_operand"))
+ (call (mem:QI (match_dup 0))
+ (match_operand 3))]
+- "!TARGET_X32 && SIBLING_CALL_P (peep2_next_insn (1))
++ "!TARGET_X32
++ && !ix86_indirect_branch_register
++ && SIBLING_CALL_P (peep2_next_insn (1))
+ && peep2_reg_dead_p (2, operands[0])"
+ [(parallel [(call (mem:QI (match_dup 1))
+ (match_dup 3))
+@@ -11785,7 +11787,9 @@
+ (unspec_volatile [(const_int 0)] UNSPECV_BLOCKAGE)
+ (call (mem:QI (match_dup 0))
+ (match_operand 3))]
+- "!TARGET_X32 && SIBLING_CALL_P (peep2_next_insn (2))
++ "!TARGET_X32
++ && !ix86_indirect_branch_register
++ && SIBLING_CALL_P (peep2_next_insn (2))
+ && peep2_reg_dead_p (3, operands[0])"
+ [(unspec_volatile [(const_int 0)] UNSPECV_BLOCKAGE)
+ (parallel [(call (mem:QI (match_dup 1))
+@@ -11806,7 +11810,7 @@
+ })
+
+ (define_insn "*call_pop"
+- [(call (mem:QI (match_operand:SI 0 "call_insn_operand" "lmBz"))
++ [(call (mem:QI (match_operand:SI 0 "call_insn_operand" "lBwBz"))
+ (match_operand 1))
+ (set (reg:SI SP_REG)
+ (plus:SI (reg:SI SP_REG)
+@@ -11826,7 +11830,7 @@
+ [(set_attr "type" "call")])
+
+ (define_insn "*sibcall_pop_memory"
+- [(call (mem:QI (match_operand:SI 0 "memory_operand" "m"))
++ [(call (mem:QI (match_operand:SI 0 "memory_operand" "Bs"))
+ (match_operand 1))
+ (set (reg:SI SP_REG)
+ (plus:SI (reg:SI SP_REG)
+@@ -11878,7 +11882,9 @@
+ [(set (match_operand:W 0 "register_operand")
+ (match_operand:W 1 "memory_operand"))
+ (set (pc) (match_dup 0))]
+- "!TARGET_X32 && peep2_reg_dead_p (2, operands[0])"
++ "!TARGET_X32
++ && !ix86_indirect_branch_register
++ && peep2_reg_dead_p (2, operands[0])"
+ [(set (pc) (match_dup 1))])
+
+ ;; Call subroutine, returning value in operand 0
+@@ -11928,7 +11934,7 @@
+ (call (mem:QI (match_operand:W 1 "memory_operand" "m"))
+ (match_operand 2)))
+ (unspec [(const_int 0)] UNSPEC_PEEPSIB)]
+- "!TARGET_X32"
++ "!TARGET_X32 && !ix86_indirect_branch_register"
+ "* return ix86_output_call_insn (insn, operands[1]);"
+ [(set_attr "type" "callv")])
+
+@@ -11938,7 +11944,9 @@
+ (set (match_operand 2)
+ (call (mem:QI (match_dup 0))
+ (match_operand 3)))]
+- "!TARGET_X32 && SIBLING_CALL_P (peep2_next_insn (1))
++ "!TARGET_X32
++ && !ix86_indirect_branch_register
++ && SIBLING_CALL_P (peep2_next_insn (1))
+ && peep2_reg_dead_p (2, operands[0])"
+ [(parallel [(set (match_dup 2)
+ (call (mem:QI (match_dup 1))
+@@ -11952,7 +11960,9 @@
+ (set (match_operand 2)
+ (call (mem:QI (match_dup 0))
+ (match_operand 3)))]
+- "!TARGET_X32 && SIBLING_CALL_P (peep2_next_insn (2))
++ "!TARGET_X32
++ && !ix86_indirect_branch_register
++ && SIBLING_CALL_P (peep2_next_insn (2))
+ && peep2_reg_dead_p (3, operands[0])"
+ [(unspec_volatile [(const_int 0)] UNSPECV_BLOCKAGE)
+ (parallel [(set (match_dup 2)
+@@ -11976,7 +11986,7 @@
+
+ (define_insn "*call_value_pop"
+ [(set (match_operand 0)
+- (call (mem:QI (match_operand:SI 1 "call_insn_operand" "lmBz"))
++ (call (mem:QI (match_operand:SI 1 "call_insn_operand" "lBwBz"))
+ (match_operand 2)))
+ (set (reg:SI SP_REG)
+ (plus:SI (reg:SI SP_REG)
+Index: b/src/gcc/config/i386/i386.opt
+===================================================================
+--- a/src/gcc/config/i386/i386.opt
++++ b/src/gcc/config/i386/i386.opt
+@@ -900,3 +900,7 @@ Enum(indirect_branch) String(thunk-inlin
+
+ EnumValue
+ Enum(indirect_branch) String(thunk-extern) Value(indirect_branch_thunk_extern)
++
++mindirect-branch-register
++Target Report Var(ix86_indirect_branch_register) Init(0)
++Force indirect call and jump via register.
+Index: b/src/gcc/config/i386/predicates.md
+===================================================================
+--- a/src/gcc/config/i386/predicates.md
++++ b/src/gcc/config/i386/predicates.md
+@@ -607,7 +607,8 @@
+ ;; Test for a valid operand for indirect branch.
+ (define_predicate "indirect_branch_operand"
+ (ior (match_operand 0 "register_operand")
+- (and (not (match_test "TARGET_X32"))
++ (and (not (match_test "ix86_indirect_branch_register"))
++ (not (match_test "TARGET_X32"))
+ (match_operand 0 "memory_operand"))))
+
+ ;; Test for a valid operand for a call instruction.
+@@ -616,7 +617,8 @@
+ (ior (match_test "constant_call_address_operand
+ (op, mode == VOIDmode ? mode : Pmode)")
+ (match_operand 0 "call_register_no_elim_operand")
+- (and (not (match_test "TARGET_X32"))
++ (and (not (match_test "ix86_indirect_branch_register"))
++ (not (match_test "TARGET_X32"))
+ (match_operand 0 "memory_operand"))))
+
+ ;; Similarly, but for tail calls, in which we cannot allow memory references.
+@@ -624,7 +626,8 @@
+ (ior (match_test "constant_call_address_operand
+ (op, mode == VOIDmode ? mode : Pmode)")
+ (match_operand 0 "register_no_elim_operand")
+- (and (not (match_test "TARGET_X32"))
++ (and (not (match_test "ix86_indirect_branch_register"))
++ (not (match_test "TARGET_X32"))
+ (match_operand 0 "sibcall_memory_operand"))))
+
+ ;; Match exactly zero.
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-5.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-6.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile { target { ! x32 } } } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
+
+ void (*dispatch) (char *);
+ char buf[10];
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-bnd-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile { target { ! x32 } } } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fcheck-pointer-bounds -mmpx -fno-pic" } */
+
+ void (*dispatch) (char *);
+ char buf[10];
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-extern-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-1.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-2.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-3.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-4.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ typedef void (*dispatch_t)(long offset);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-inline-7.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ void func0 (void);
+ void func1 (void);
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-1.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-1.c
+@@ -0,0 +1,22 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk -mindirect-branch-register -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" } } */
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "mov\[ \t\](%eax|%rax), \\((%esp|%rsp)\\)" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler-not "push(?:l|q)\[ \t\]*_?dispatch" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk\n" } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk_bnd\n" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-2.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-2.c
+@@ -0,0 +1,20 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -mindirect-branch-register -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "call\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler "mov\[ \t\](%eax|%rax), \\((%esp|%rsp)\\)" } } */
++/* { dg-final { scan-assembler {\tpause} } } */
++/* { dg-final { scan-assembler-not "push(?:l|q)\[ \t\]*_?dispatch" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" } } */
++/* { dg-final { scan-assembler-not "__x86_indirect_thunk" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-3.c
+===================================================================
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-3.c
+@@ -0,0 +1,19 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -mindirect-branch-register -fno-pic" } */
++
++typedef void (*dispatch_t)(long offset);
++
++dispatch_t dispatch;
++
++void
++male_indirect_jump (long offset)
++{
++ dispatch(offset);
++}
++
++/* { dg-final { scan-assembler "jmp\[ \t\]*__x86_indirect_thunk_(r|e)ax" } } */
++/* { dg-final { scan-assembler-not "push(?:l|q)\[ \t\]*_?dispatch" } } */
++/* { dg-final { scan-assembler-not "pushq\[ \t\]%rax" } } */
++/* { dg-final { scan-assembler-not {\t(pause|pause|nop)} } } */
++/* { dg-final { scan-assembler-not "jmp\[ \t\]*\.LIND" } } */
++/* { dg-final { scan-assembler-not "call\[ \t\]*\.LIND" } } */
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-10.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=thunk-inline -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=thunk-inline -mindirect-branch=thunk -fno-pic" } */
+
+ extern void (*bar) (void);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-11.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=thunk-extern -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=thunk-extern -mindirect-branch=thunk -fno-pic" } */
+
+ extern void (*bar) (void);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-12.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk -fno-pic" } */
+
+ extern void (*bar) (void);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-13.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-inline -fno-pic" } */
+
+ extern void (*bar) (void);
+ extern int foo (void) __attribute__ ((function_return("thunk")));
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-14.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=thunk-extern -fno-pic" } */
+
+ extern void (*bar) (void);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-15.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=keep -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=keep -mindirect-branch=keep -fno-pic" } */
+
+ extern void (*bar) (void);
+
+Index: b/src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c
+===================================================================
+--- a/src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-9.c
+@@ -1,5 +1,5 @@
+ /* { dg-do compile } */
+-/* { dg-options "-O2 -mfunction-return=thunk -mindirect-branch=thunk -fno-pic" } */
++/* { dg-options "-O2 -mno-indirect-branch-register -mno-indirect-branch-register -mfunction-return=thunk -mindirect-branch=thunk -fno-pic" } */
+
+ extern void (*bar) (void);
+
diff --git a/development/gcc5/patches/0008-x86-Add-V-register-operand-modifier-doc.diff b/development/gcc5/patches/0008-x86-Add-V-register-operand-modifier-doc.diff
new file mode 100644
index 0000000000..b3bd93a218
--- /dev/null
+++ b/development/gcc5/patches/0008-x86-Add-V-register-operand-modifier-doc.diff
@@ -0,0 +1,65 @@
+From 8a47615dd04a02fdae9691f5ad73fd5a5530c156 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:19:51 +0000
+Subject: [PATCH 8/9] x86: Add 'V' register operand modifier (documentation)
+
+Add 'V', a special modifier which prints the name of the full integer
+register without '%'. For
+
+extern void (*func_p) (void);
+
+void
+foo (void)
+{
+ asm ("call __x86_indirect_thunk_%V0" : : "a" (func_p));
+}
+
+it generates:
+
+foo:
+ movq func_p(%rip), %rax
+ call __x86_indirect_thunk_rax
+ ret
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/i386.c (print_reg): Print the name of the full
+ integer register without '%'.
+ (ix86_print_operand): Handle 'V'.
+ * doc/extend.texi: Document 'V' modifier.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-register-4.c: New test.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256736 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog | 10 ++++++++++
+ gcc/config/i386/i386.c | 13 ++++++++++++-
+ gcc/doc/extend.texi | 3 +++
+ gcc/testsuite/ChangeLog | 7 +++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c | 13 +++++++++++++
+ 5 files changed, 45 insertions(+), 1 deletion(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c
+
+diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
+index 46e0a36..9db9e0e 100644
+--- a/src/gcc/doc/extend.texi
++++ b/src/gcc/doc/extend.texi
+@@ -8778,6 +8778,9 @@ The table below shows the list of supported modifiers and their effects.
+ @tab @code{2}
+ @end multitable
+
++@code{V} is a special modifier which prints the name of the full integer
++register without @code{%}.
++
+ @anchor{x86floatingpointasmoperands}
+ @subsubsection x86 Floating-Point @code{asm} Operands
+
diff --git a/development/gcc5/patches/0008-x86-Add-V-register-operand-modifier.diff b/development/gcc5/patches/0008-x86-Add-V-register-operand-modifier.diff
new file mode 100644
index 0000000000..fb1ccd9883
--- /dev/null
+++ b/development/gcc5/patches/0008-x86-Add-V-register-operand-modifier.diff
@@ -0,0 +1,125 @@
+From 8a47615dd04a02fdae9691f5ad73fd5a5530c156 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:19:51 +0000
+Subject: [PATCH 8/9] x86: Add 'V' register operand modifier
+
+Add 'V', a special modifier which prints the name of the full integer
+register without '%'. For
+
+extern void (*func_p) (void);
+
+void
+foo (void)
+{
+ asm ("call __x86_indirect_thunk_%V0" : : "a" (func_p));
+}
+
+it generates:
+
+foo:
+ movq func_p(%rip), %rax
+ call __x86_indirect_thunk_rax
+ ret
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/i386.c (print_reg): Print the name of the full
+ integer register without '%'.
+ (ix86_print_operand): Handle 'V'.
+ * doc/extend.texi: Document 'V' modifier.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-register-4.c: New test.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256736 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog | 10 ++++++++++
+ gcc/config/i386/i386.c | 13 ++++++++++++-
+ gcc/doc/extend.texi | 3 +++
+ gcc/testsuite/ChangeLog | 7 +++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c | 13 +++++++++++++
+ 5 files changed, 45 insertions(+), 1 deletion(-)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c
+
+diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
+index 8fb8902..1bbdd0c 100644
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -17941,6 +17941,7 @@ put_condition_code (enum rtx_code code, machine_mode mode, bool reverse,
+ If CODE is 'h', pretend the reg is the 'high' byte register.
+ If CODE is 'y', print "st(0)" instead of "st", if the reg is stack op.
+ If CODE is 'd', duplicate the operand for AVX instruction.
++ If CODE is 'V', print naked full integer register name without %.
+ */
+
+ void
+@@ -17951,7 +17952,7 @@ print_reg (rtx x, int code, FILE *file)
+ unsigned int regno;
+ bool duplicated = code == 'd' && TARGET_AVX;
+
+- if (ASSEMBLER_DIALECT == ASM_ATT)
++ if (ASSEMBLER_DIALECT == ASM_ATT && code != 'V')
+ putc ('%', file);
+
+ if (x == pc_rtx)
+@@ -17999,6 +18000,14 @@ print_reg (rtx x, int code, FILE *file)
+ else
+ code = GET_MODE_SIZE (GET_MODE (x));
+
++ if (code == 'V')
++ {
++ if (GENERAL_REGNO_P (regno))
++ code = GET_MODE_SIZE (word_mode);
++ else
++ error ("'V' modifier on non-integer register");
++ }
++
+ /* Irritatingly, AMD extended registers use different naming convention
+ from the normal registers: "r%d[bwd]" */
+ if (REX_INT_REGNO_P (regno))
+@@ -18118,6 +18127,7 @@ print_reg (rtx x, int code, FILE *file)
+ & -- print some in-use local-dynamic symbol name.
+ H -- print a memory address offset by 8; used for sse high-parts
+ Y -- print condition for XOP pcom* instruction.
++ V -- print naked full integer register name without %.
+ + -- print a branch hint as 'cs' or 'ds' prefix
+ ; -- print a semicolon (after prefixes due to bug in older gas).
+ ~ -- print "i" if TARGET_AVX2, "f" otherwise.
+@@ -18342,6 +18352,7 @@ ix86_print_operand (FILE *file, rtx x, int code)
+ case 'X':
+ case 'P':
+ case 'p':
++ case 'V':
+ break;
+
+ case 's':
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c
+new file mode 100644
+index 0000000..f0cd9b7
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-register-4.c
+@@ -0,0 +1,13 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -mindirect-branch=keep -fno-pic" } */
++
++extern void (*func_p) (void);
++
++void
++foo (void)
++{
++ asm("call __x86_indirect_thunk_%V0" : : "a" (func_p));
++}
++
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_eax" { target ia32 } } } */
++/* { dg-final { scan-assembler "call\[ \t\]*__x86_indirect_thunk_rax" { target { ! ia32 } } } } */
+--
+2.7.4
+
diff --git a/development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-.diff b/development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-.diff
new file mode 100644
index 0000000000..fdaab625ab
--- /dev/null
+++ b/development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-.diff
@@ -0,0 +1,275 @@
+From 5d1c53c6fd593de2360c1a2ae44ebf5fa3c5263b Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:22:01 +0000
+Subject: [PATCH 9/9] x86: Disallow -mindirect-branch=/-mfunction-return= with
+ -mcmodel=large
+
+Since the thunk function may not be reachable in large code model,
+-mcmodel=large is incompatible with -mindirect-branch=thunk,
+-mindirect-branch=thunk-extern, -mfunction-return=thunk and
+-mfunction-return=thunk-extern. Issue an error when they are used with
+-mcmodel=large.
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/i386.c (ix86_set_indirect_branch_type): Disallow
+ -mcmodel=large with -mindirect-branch=thunk,
+ -mindirect-branch=thunk-extern, -mfunction-return=thunk and
+ -mfunction-return=thunk-extern.
+ * doc/invoke.texi: Document -mcmodel=large is incompatible with
+ -mindirect-branch=thunk, -mindirect-branch=thunk-extern,
+ -mfunction-return=thunk and -mfunction-return=thunk-extern.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-10.c: New test.
+ * gcc.target/i386/indirect-thunk-8.c: Likewise.
+ * gcc.target/i386/indirect-thunk-9.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-10.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-11.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-9.c: Likewise.
+ * gcc.target/i386/ret-thunk-17.c: Likewise.
+ * gcc.target/i386/ret-thunk-18.c: Likewise.
+ * gcc.target/i386/ret-thunk-19.c: Likewise.
+ * gcc.target/i386/ret-thunk-20.c: Likewise.
+ * gcc.target/i386/ret-thunk-21.c: Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256737 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog | 13 +++++++++++
+ gcc/config/i386/i386.c | 26 ++++++++++++++++++++++
+ gcc/doc/invoke.texi | 11 +++++++++
+ gcc/testsuite/ChangeLog | 17 ++++++++++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-10.c | 7 ++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-8.c | 7 ++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-9.c | 7 ++++++
+ .../gcc.target/i386/indirect-thunk-attr-10.c | 9 ++++++++
+ .../gcc.target/i386/indirect-thunk-attr-11.c | 9 ++++++++
+ .../gcc.target/i386/indirect-thunk-attr-9.c | 9 ++++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-17.c | 7 ++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-18.c | 8 +++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-19.c | 8 +++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-20.c | 9 ++++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-21.c | 9 ++++++++
+ 15 files changed, 156 insertions(+)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-10.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-8.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-9.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-10.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-11.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-9.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-17.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-18.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-19.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-20.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-21.c
+
+diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
+index 1bbdd0c..e758387 100644
+--- a/src/gcc/config/i386/i386.c
++++ b/src/gcc/config/i386/i386.c
+@@ -7187,6 +7187,19 @@ ix86_set_indirect_branch_type (tree fndecl)
+ }
+ else
+ cfun->machine->indirect_branch_type = ix86_indirect_branch;
++
++ /* -mcmodel=large is not compatible with -mindirect-branch=thunk
++ nor -mindirect-branch=thunk-extern. */
++ if ((ix86_cmodel == CM_LARGE || ix86_cmodel == CM_LARGE_PIC)
++ && ((cfun->machine->indirect_branch_type
++ == indirect_branch_thunk_extern)
++ || (cfun->machine->indirect_branch_type
++ == indirect_branch_thunk)))
++ error ("%<-mindirect-branch=%s%> and %<-mcmodel=large%> are not "
++ "compatible",
++ ((cfun->machine->indirect_branch_type
++ == indirect_branch_thunk_extern)
++ ? "thunk-extern" : "thunk"));
+ }
+
+ if (cfun->machine->function_return_type == indirect_branch_unset)
+@@ -7212,6 +7225,19 @@ ix86_set_indirect_branch_type (tree fndecl)
+ }
+ else
+ cfun->machine->function_return_type = ix86_function_return;
++
++ /* -mcmodel=large is not compatible with -mfunction-return=thunk
++ nor -mfunction-return=thunk-extern. */
++ if ((ix86_cmodel == CM_LARGE || ix86_cmodel == CM_LARGE_PIC)
++ && ((cfun->machine->function_return_type
++ == indirect_branch_thunk_extern)
++ || (cfun->machine->function_return_type
++ == indirect_branch_thunk)))
++ error ("%<-mfunction-return=%s%> and %<-mcmodel=large%> are not "
++ "compatible",
++ ((cfun->machine->function_return_type
++ == indirect_branch_thunk_extern)
++ ? "thunk-extern" : "thunk"));
+ }
+ }
+
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-10.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-10.c
+new file mode 100644
+index 0000000..a0674bd
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-10.c
+@@ -0,0 +1,7 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mindirect-branch=thunk-inline -mfunction-return=keep -mcmodel=large" } */
++
++void
++bar (void)
++{
++}
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-8.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-8.c
+new file mode 100644
+index 0000000..7a80a89
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-8.c
+@@ -0,0 +1,7 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mindirect-branch=thunk -mfunction-return=keep -mcmodel=large" } */
++
++void
++bar (void)
++{ /* { dg-error "'-mindirect-branch=thunk' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-9.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-9.c
+new file mode 100644
+index 0000000..d4d45c5
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-9.c
+@@ -0,0 +1,7 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mindirect-branch=thunk-extern -mfunction-return=keep -mcmodel=large" } */
++
++void
++bar (void)
++{ /* { dg-error "'-mindirect-branch=thunk-extern' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-10.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-10.c
+new file mode 100644
+index 0000000..3a2aead
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-10.c
+@@ -0,0 +1,9 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mindirect-branch=keep -mfunction-return=keep -mcmodel=large" } */
++/* { dg-additional-options "-fPIC" { target fpic } } */
++
++__attribute__ ((indirect_branch("thunk-extern")))
++void
++bar (void)
++{ /* { dg-error "'-mindirect-branch=thunk-extern' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-11.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-11.c
+new file mode 100644
+index 0000000..8e52f03
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-11.c
+@@ -0,0 +1,9 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mindirect-branch=keep -mfunction-return=keep -mcmodel=large" } */
++/* { dg-additional-options "-fPIC" { target fpic } } */
++
++__attribute__ ((indirect_branch("thunk-inline")))
++void
++bar (void)
++{
++}
+diff --git a/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-9.c b/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-9.c
+new file mode 100644
+index 0000000..bdaa4f6
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/indirect-thunk-attr-9.c
+@@ -0,0 +1,9 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mindirect-branch=keep -mfunction-return=keep -mcmodel=large" } */
++/* { dg-additional-options "-fPIC" { target fpic } } */
++
++__attribute__ ((indirect_branch("thunk")))
++void
++bar (void)
++{ /* { dg-error "'-mindirect-branch=thunk' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/ret-thunk-17.c b/gcc/testsuite/gcc.target/i386/ret-thunk-17.c
+new file mode 100644
+index 0000000..0605e2c
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-17.c
+@@ -0,0 +1,7 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mfunction-return=thunk -mindirect-branch=keep -mcmodel=large" } */
++
++void
++bar (void)
++{ /* { dg-error "'-mfunction-return=thunk' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/ret-thunk-18.c b/gcc/testsuite/gcc.target/i386/ret-thunk-18.c
+new file mode 100644
+index 0000000..307019d
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-18.c
+@@ -0,0 +1,8 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mfunction-return=thunk-extern -mindirect-branch=keep -mcmodel=large" } */
++/* { dg-additional-options "-fPIC" { target fpic } } */
++
++void
++bar (void)
++{ /* { dg-error "'-mfunction-return=thunk-extern' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/ret-thunk-19.c b/gcc/testsuite/gcc.target/i386/ret-thunk-19.c
+new file mode 100644
+index 0000000..772617f
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-19.c
+@@ -0,0 +1,8 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=keep -mcmodel=large" } */
++
++__attribute__ ((function_return("thunk")))
++void
++bar (void)
++{ /* { dg-error "'-mfunction-return=thunk' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/ret-thunk-20.c b/gcc/testsuite/gcc.target/i386/ret-thunk-20.c
+new file mode 100644
+index 0000000..1e9f9bd
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-20.c
+@@ -0,0 +1,9 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=keep -mcmodel=large" } */
++/* { dg-additional-options "-fPIC" { target fpic } } */
++
++__attribute__ ((function_return("thunk-extern")))
++void
++bar (void)
++{ /* { dg-error "'-mfunction-return=thunk-extern' and '-mcmodel=large' are not compatible" } */
++}
+diff --git a/gcc/testsuite/gcc.target/i386/ret-thunk-21.c b/gcc/testsuite/gcc.target/i386/ret-thunk-21.c
+new file mode 100644
+index 0000000..eea07f7
+--- /dev/null
++++ b/src/gcc/testsuite/gcc.target/i386/ret-thunk-21.c
+@@ -0,0 +1,9 @@
++/* { dg-do compile { target { lp64 } } } */
++/* { dg-options "-O2 -mfunction-return=keep -mindirect-branch=keep -mcmodel=large" } */
++/* { dg-additional-options "-fPIC" { target fpic } } */
++
++__attribute__ ((function_return("thunk-inline")))
++void
++bar (void)
++{
++}
+--
+2.7.4
+
diff --git a/development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-doc.diff b/development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-doc.diff
new file mode 100644
index 0000000000..c107900552
--- /dev/null
+++ b/development/gcc5/patches/0009-x86-Disallow-mindirect-branch-mfunction-return-with-doc.diff
@@ -0,0 +1,102 @@
+From 5d1c53c6fd593de2360c1a2ae44ebf5fa3c5263b Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 16 Jan 2018 11:22:01 +0000
+Subject: [PATCH 9/9] x86: Disallow -mindirect-branch=/-mfunction-return= with
+ -mcmodel=large
+
+Since the thunk function may not be reachable in large code model,
+-mcmodel=large is incompatible with -mindirect-branch=thunk,
+-mindirect-branch=thunk-extern, -mfunction-return=thunk and
+-mfunction-return=thunk-extern. Issue an error when they are used with
+-mcmodel=large.
+
+gcc/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/i386/i386.c (ix86_set_indirect_branch_type): Disallow
+ -mcmodel=large with -mindirect-branch=thunk,
+ -mindirect-branch=thunk-extern, -mfunction-return=thunk and
+ -mfunction-return=thunk-extern.
+ * doc/invoke.texi: Document -mcmodel=large is incompatible with
+ -mindirect-branch=thunk, -mindirect-branch=thunk-extern,
+ -mfunction-return=thunk and -mfunction-return=thunk-extern.
+
+gcc/testsuite/
+
+ Backport from mainline
+ 2018-01-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * gcc.target/i386/indirect-thunk-10.c: New test.
+ * gcc.target/i386/indirect-thunk-8.c: Likewise.
+ * gcc.target/i386/indirect-thunk-9.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-10.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-11.c: Likewise.
+ * gcc.target/i386/indirect-thunk-attr-9.c: Likewise.
+ * gcc.target/i386/ret-thunk-17.c: Likewise.
+ * gcc.target/i386/ret-thunk-18.c: Likewise.
+ * gcc.target/i386/ret-thunk-19.c: Likewise.
+ * gcc.target/i386/ret-thunk-20.c: Likewise.
+ * gcc.target/i386/ret-thunk-21.c: Likewise.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256737 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog | 13 +++++++++++
+ gcc/config/i386/i386.c | 26 ++++++++++++++++++++++
+ gcc/doc/invoke.texi | 11 +++++++++
+ gcc/testsuite/ChangeLog | 17 ++++++++++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-10.c | 7 ++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-8.c | 7 ++++++
+ gcc/testsuite/gcc.target/i386/indirect-thunk-9.c | 7 ++++++
+ .../gcc.target/i386/indirect-thunk-attr-10.c | 9 ++++++++
+ .../gcc.target/i386/indirect-thunk-attr-11.c | 9 ++++++++
+ .../gcc.target/i386/indirect-thunk-attr-9.c | 9 ++++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-17.c | 7 ++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-18.c | 8 +++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-19.c | 8 +++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-20.c | 9 ++++++++
+ gcc/testsuite/gcc.target/i386/ret-thunk-21.c | 9 ++++++++
+ 15 files changed, 156 insertions(+)
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-10.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-8.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-9.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-10.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-11.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/indirect-thunk-attr-9.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-17.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-18.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-19.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-20.c
+ create mode 100644 gcc/testsuite/gcc.target/i386/ret-thunk-21.c
+
+diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
+index 1e572b1..6f3c344 100644
+--- a/src/gcc/doc/invoke.texi
++++ b/src/gcc/doc/invoke.texi
+@@ -25699,6 +25699,11 @@ to external call and return thunk provided in a separate object file.
+ You can control this behavior for a specific function by using the
+ function attribute @code{indirect_branch}. @xref{Function Attributes}.
+
++Note that @option{-mcmodel=large} is incompatible with
++@option{-mindirect-branch=thunk} nor
++@option{-mindirect-branch=thunk-extern} since the thunk function may
++not be reachable in large code model.
++
+ @item -mfunction-return=@var{choice}
+ @opindex -mfunction-return
+ Convert function return with @var{choice}. The default is @samp{keep},
+@@ -25710,6 +25715,12 @@ object file. You can control this behavior for a specific function by
+ using the function attribute @code{function_return}.
+ @xref{Function Attributes}.
+
++Note that @option{-mcmodel=large} is incompatible with
++@option{-mfunction-return=thunk} nor
++@option{-mfunction-return=thunk-extern} since the thunk function may
++not be reachable in large code model.
++
++
+ @item -mindirect-branch-register
+ @opindex -mindirect-branch-register
+ Force indirect call and jump via register.
diff --git a/development/gcc5/patches/gcc-no_fixincludes.diff b/development/gcc5/patches/gcc-no_fixincludes.diff
new file mode 100644
index 0000000000..52b661613d
--- /dev/null
+++ b/development/gcc5/patches/gcc-no_fixincludes.diff
@@ -0,0 +1,27 @@
+--- ./gcc/Makefile.in.orig 2010-04-02 02:49:06.000000000 -0500
++++ ./gcc/Makefile.in 2010-08-01 16:55:30.088318841 -0500
+@@ -3864,9 +3864,9 @@
+ chmod a+r $${fix_dir}/limits.h; \
+ done
+ # Install the README
+- rm -f include-fixed/README
+- cp $(srcdir)/../fixincludes/README-fixinc include-fixed/README
+- chmod a+r include-fixed/README
++# rm -f include-fixed/README
++# cp $(srcdir)/../fixincludes/README-fixinc include-fixed/README
++# chmod a+r include-fixed/README
+ $(STAMP) $@
+
+ .PHONY: install-gcc-tooldir
+@@ -3947,10 +3947,7 @@
+ (TARGET_MACHINE='$(target)'; srcdir=`cd $(srcdir); ${PWD_COMMAND}`; \
+ SHELL='$(SHELL)'; MACRO_LIST=`${PWD_COMMAND}`/macro_list ; \
+ gcc_dir=`${PWD_COMMAND}` ; \
+- export TARGET_MACHINE srcdir SHELL MACRO_LIST && \
+- cd $(build_objdir)/fixincludes && \
+- $(SHELL) ./fixinc.sh "$${gcc_dir}/$${fix_dir}" \
+- $(SYSTEM_HEADER_DIR) $(OTHER_FIXINCLUDES_DIRS) ); \
++ export TARGET_MACHINE srcdir SHELL MACRO_LIST ); \
+ rm -f $${fix_dir}/syslimits.h; \
+ if [ -f $${fix_dir}/limits.h ]; then \
+ mv $${fix_dir}/limits.h $${fix_dir}/syslimits.h; \
diff --git a/development/gcc5/patches/gcc.66782.diff b/development/gcc5/patches/gcc.66782.diff
new file mode 100644
index 0000000000..0743f8853b
--- /dev/null
+++ b/development/gcc5/patches/gcc.66782.diff
@@ -0,0 +1,124 @@
+Index: config/i386/i386.md
+===================================================================
+--- config/i386/i386.md (revision 225539)
++++ config/i386/i386.md (working copy)
+@@ -108,6 +108,7 @@
+ UNSPEC_LD_MPIC ; load_macho_picbase
+ UNSPEC_TRUNC_NOOP
+ UNSPEC_DIV_ALREADY_SPLIT
++ UNSPEC_MS_TO_SYSV_CALL
+ UNSPEC_PAUSE
+ UNSPEC_LEA_ADDR
+ UNSPEC_XBEGIN_ABORT
+@@ -11584,6 +11585,15 @@
+ "* return ix86_output_call_insn (insn, operands[0]);"
+ [(set_attr "type" "call")])
+
++(define_insn "*call_rex64_ms_sysv"
++ [(match_parallel 2 "call_rex64_ms_sysv_operation"
++ [(call (mem:QI (match_operand:DI 0 "call_insn_operand" "rBwBz"))
++ (match_operand 1))
++ (unspec [(const_int 0)] UNSPEC_MS_TO_SYSV_CALL)])]
++ "TARGET_64BIT && !SIBLING_CALL_P (insn)"
++ "* return ix86_output_call_insn (insn, operands[0]);"
++ [(set_attr "type" "call")])
++
+ (define_insn "*sibcall"
+ [(call (mem:QI (match_operand:W 0 "sibcall_insn_operand" "UBsBz"))
+ (match_operand 1))]
+@@ -11808,6 +11818,16 @@
+ (match_dup 3)))
+ (unspec [(const_int 0)] UNSPEC_PEEPSIB)])])
+
++(define_insn "*call_value_rex64_ms_sysv"
++ [(match_parallel 3 "call_rex64_ms_sysv_operation"
++ [(set (match_operand 0)
++ (call (mem:QI (match_operand:DI 1 "call_insn_operand" "rBwBz"))
++ (match_operand 2)))
++ (unspec [(const_int 0)] UNSPEC_MS_TO_SYSV_CALL)])]
++ "TARGET_64BIT && !SIBLING_CALL_P (insn)"
++ "* return ix86_output_call_insn (insn, operands[1]);"
++ [(set_attr "type" "callv")])
++
+ (define_expand "call_value_pop"
+ [(parallel [(set (match_operand 0)
+ (call (match_operand:QI 1)
+Index: config/i386/predicates.md
+===================================================================
+--- config/i386/predicates.md (revision 225533)
++++ config/i386/predicates.md (working copy)
+@@ -616,6 +616,36 @@
+ && XINT (XEXP (op, 0), 1) == UNSPEC_GOTPCREL);
+ })
+
++;; Return true if OP is a call from MS ABI to SYSV ABI function.
++(define_predicate "call_rex64_ms_sysv_operation"
++ (match_code "parallel")
++{
++ unsigned creg_size = ARRAY_SIZE (x86_64_ms_sysv_extra_clobbered_registers);
++ unsigned i;
++
++ if ((unsigned) XVECLEN (op, 0) != creg_size + 2)
++ return false;
++
++ for (i = 0; i < creg_size; i++)
++ {
++ rtx elt = XVECEXP (op, 0, i+2);
++ enum machine_mode mode;
++ unsigned regno;
++
++ if (GET_CODE (elt) != CLOBBER
++ || GET_CODE (SET_DEST (elt)) != REG)
++ return false;
++
++ regno = x86_64_ms_sysv_extra_clobbered_registers[i];
++ mode = SSE_REGNO_P (regno) ? TImode : DImode;
++
++ if (GET_MODE (SET_DEST (elt)) != mode
++ || REGNO (SET_DEST (elt)) != regno)
++ return false;
++ }
++ return true;
++})
++
+ ;; Match exactly zero.
+ (define_predicate "const0_operand"
+ (match_code "const_int,const_wide_int,const_double,const_vector")
+Index: config/i386/i386.c
+===================================================================
+--- config/i386/i386.c (revision 225533)
++++ config/i386/i386.c (working copy)
+@@ -25639,7 +25639,9 @@
+ rtx callarg2,
+ rtx pop, bool sibcall)
+ {
+- rtx vec[3];
++ unsigned int const cregs_size
++ = ARRAY_SIZE (x86_64_ms_sysv_extra_clobbered_registers);
++ rtx vec[3 + cregs_size];
+ rtx use = NULL, call;
+ unsigned int vec_len = 0;
+
+@@ -25742,16 +25744,18 @@
+ if (TARGET_64BIT_MS_ABI
+ && (!callarg2 || INTVAL (callarg2) != -2))
+ {
+- int const cregs_size
+- = ARRAY_SIZE (x86_64_ms_sysv_extra_clobbered_registers);
+- int i;
++ unsigned i;
+
++ vec[vec_len++] = gen_rtx_UNSPEC (VOIDmode, gen_rtvec (1, const0_rtx),
++ UNSPEC_MS_TO_SYSV_CALL);
++
+ for (i = 0; i < cregs_size; i++)
+ {
+ int regno = x86_64_ms_sysv_extra_clobbered_registers[i];
+ machine_mode mode = SSE_REGNO_P (regno) ? TImode : DImode;
+
+- clobber_reg (&use, gen_rtx_REG (mode, regno));
++ vec[vec_len++]
++ = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (mode, regno));
+ }
+ }
+
diff --git a/development/gcc5/patches/gcc.69140.diff b/development/gcc5/patches/gcc.69140.diff
new file mode 100644
index 0000000000..ace60ebdd0
--- /dev/null
+++ b/development/gcc5/patches/gcc.69140.diff
@@ -0,0 +1,13 @@
+--- ./gcc/config/i386/i386.c.orig 2015-11-18 09:45:26.000000000 -0600
++++ ./gcc/config/i386/i386.c 2016-02-05 13:50:07.202981920 -0600
+@@ -9677,6 +9677,10 @@
+ if (TARGET_64BIT_MS_ABI && get_frame_size () > SEH_MAX_FRAME_SIZE)
+ return true;
+
++ /* SSE saves require frame-pointer when stack is misaligned. */
++ if (TARGET_64BIT_MS_ABI && ix86_incoming_stack_boundary < 128)
++ return true;
++
+ /* In ix86_option_override_internal, TARGET_OMIT_LEAF_FRAME_POINTER
+ turns off the frame pointer by default. Turn it back on now if
+ we've not got a leaf function. */
diff --git a/development/gcc5/patches/glibc2.28-ustat.diff b/development/gcc5/patches/glibc2.28-ustat.diff
new file mode 100644
index 0000000000..c7d71d0677
--- /dev/null
+++ b/development/gcc5/patches/glibc2.28-ustat.diff
@@ -0,0 +1,31 @@
+--- libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc 2018/04/25 07:39:32 259630
++++ libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc 2018/05/24 20:07:25 260687
+@@ -138,7 +138,6 @@
+ # include <sys/procfs.h>
+ #endif
+ #include <sys/user.h>
+-#include <sys/ustat.h>
+ #include <linux/cyclades.h>
+ #include <linux/if_eql.h>
+ #include <linux/if_plip.h>
+@@ -231,7 +230,19 @@
+ #endif // SANITIZER_LINUX || SANITIZER_FREEBSD
+
+ #if SANITIZER_LINUX && !SANITIZER_ANDROID
+- unsigned struct_ustat_sz = sizeof(struct ustat);
++ // Use pre-computed size of struct ustat to avoid <sys/ustat.h> which
++ // has been removed from glibc 2.28.
++#if defined(__aarch64__) || defined(__s390x__) || defined (__mips64) \
++ || defined(__powerpc64__) || defined(__arch64__) || defined(__sparcv9) \
++ || defined(__x86_64__)
++#define SIZEOF_STRUCT_USTAT 32
++#elif defined(__arm__) || defined(__i386__) || defined(__mips__) \
++ || defined(__powerpc__) || defined(__s390__)
++#define SIZEOF_STRUCT_USTAT 20
++#else
++#error Unknown size of struct ustat
++#endif
++ unsigned struct_ustat_sz = SIZEOF_STRUCT_USTAT;
+ unsigned struct_rlimit64_sz = sizeof(struct rlimit64);
+ unsigned struct_statvfs64_sz = sizeof(struct statvfs64);
+ #endif // SANITIZER_LINUX && !SANITIZER_ANDROID
diff --git a/development/gcc5/profile.d/gcc5.csh b/development/gcc5/profile.d/gcc5.csh
new file mode 100644
index 0000000000..25f9dc1342
--- /dev/null
+++ b/development/gcc5/profile.d/gcc5.csh
@@ -0,0 +1,7 @@
+setenv CC gcc-5
+setenv CPP cpp-5
+setenv CXX g++-5
+setenv AR gcc-ar-5
+setenv NM gcc-nm-5
+setenv RANLIB gcc-ranlib-5
+
diff --git a/development/gcc5/profile.d/gcc5.sh b/development/gcc5/profile.d/gcc5.sh
new file mode 100644
index 0000000000..7143b5d0e9
--- /dev/null
+++ b/development/gcc5/profile.d/gcc5.sh
@@ -0,0 +1,7 @@
+export CC=gcc-5
+export CPP=cpp-5
+export CXX=g++-5
+export AR=gcc-ar-5
+export NM=gcc-nm-5
+export RANLIB=gcc-ranlib-5
+
diff --git a/development/gcc5/slack-desc.gcc5 b/development/gcc5/slack-desc.gcc5
new file mode 100644
index 0000000000..d9d965846b
--- /dev/null
+++ b/development/gcc5/slack-desc.gcc5
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description. Line
+# up the first '|' above the ':' following the base package name, and the '|' on
+# the right side marks the last column you can put a character in. You must make
+# exactly 11 lines for the formatting to be correct. It's also customary to
+# leave one space after the ':'.
+
+ |-----handy-ruler------------------------------------------------------|
+gcc5: gcc5 (Co-installable GCC-5 package with C, C++ and Java support)
+gcc5:
+gcc5: GCC is the GNU Compiler Collection.
+gcc5:
+gcc5: This package contains those parts of the compiler collection needed to
+gcc5: compile C and C++ code and programs written in the Java programming
+gcc5: language.@MULTILIB@
+gcc5:
+gcc5: This gcc5 package must be co-installed with Slackware's gcc7 compiler.
+gcc5:
+gcc5: