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H.J. Lu bbcdf9bb3f x86: Mark scratch operand in ssse3_pshufbv8qi3 as earlyclobber commit `16ed2601ad` Author: H.J. Lu <hongjiu.lu@intel.com> Date: Wed May 15 15:26:19 2019 +0000 i386: Emulate MMX pshufb with SSE version has +(define_insn_and_split "ssse3_pshufbv8qi3" + [(set (match_operand:V8QI 0 "register_operand" "=y,x,Yv") + (unspec:V8QI [(match_operand:V8QI 1 "register_operand" "0,0,Yv") + (match_operand:V8QI 2 "register_mmxmem_operand" "ym,x,Yv")] + UNSPEC_PSHUFB)) + (clobber (match_scratch:V4SI 3 "=X,x,Yv"))] ^^^ There are earlyclobber. + "(TARGET_MMX \|\| TARGET_MMX_WITH_SSE) && TARGET_SSSE3" + "@ + pshufb\t{%2, %0\|%0, %2} + # + #" + "TARGET_MMX_WITH_SSE && reload_completed" + [(set (match_dup 3) (match_dup 5)) + (set (match_dup 3) + (and:V4SI (match_dup 3) (match_dup 2))) + (set (match_dup 0) + (unspec:V16QI [(match_dup 1) (match_dup 4)] UNSPEC_PSHUFB))] If input register operand 2 is dead after this insn, RA may choose it as scratch operand. Since it isn't marked as earlyclobber, operand 2 becomes unused after split and then it gets optimized out. Mark scratch operand as earlyclobber fixes the issue. gcc/ PR target/94467 * config/i386/sse.md (ssse3_pshufbv8qi3): Mark scratch operand as earlyclobber. gcc/testsuite/ PR target/94467 * gcc.target/i386/pr94467-1.c: New test. * gcc.target/i386/pr94467-2.c: Likewise.		2020-04-03 11:49:29 -07:00
INSTALL	…
config	Use a non-empty test program to test ability to link.	2020-02-12 13:22:07 -08:00
contrib	Improve svn-rev to search for pattern at line beginning.	2020-04-03 12:30:39 +02:00
fixincludes	Allow CONFIG_SHELL to override build-time shell in mkheaders	2020-02-20 22:09:03 -03:00
gcc	x86: Mark scratch operand in ssse3_pshufbv8qi3 as earlyclobber	2020-04-03 11:49:29 -07:00
gnattools	PR81878: fix --disable-bootstrap --enable-languages=ada	2018-11-20 00:07:47 +00:00
gotools	libgo: update to Go1.14beta1	2020-01-21 23:53:22 -08:00
include	Clear me from patch ownership.	2020-04-01 11:58:35 +02:00
intl	Fixes after recent configure changes relating to static libraries	2020-02-01 00:34:28 +00:00
libada	Add `--with-toolexeclibdir=' configuration option	2020-01-24 11:24:25 +00:00
libatomic	libatomic: Fix last change [PR55930]	2020-02-22 19:55:09 +01:00
libbacktrace	libbacktrace: update to current libgo test file	2020-02-15 18:25:13 -08:00
libcc1	c++: Fix return type deduction with an abbreviated function template	2020-02-10 20:43:53 -05:00
libcpp	Update cpplib sr.po.	2020-03-31 18:09:30 +00:00
libdecnumber	Update copyright years.	2020-01-01 12:51:42 +01:00
libffi	Add `--with-toolexeclibdir=' configuration option	2020-01-24 11:24:25 +00:00
libgcc	S/390 zTPF: Handle skip trace addresses when unwinding	2020-04-03 08:46:11 +02:00
libgfortran	Use au->lock exclusively for locking in async I/O.	2020-02-18 19:45:25 +01:00
libgo	runtime: handle linux/arm64 signal register	2020-02-28 12:24:21 -08:00
libgomp	Revert "[nvptx, libgomp] Update pr85381-{2,4}.c test-cases" [PR89713, PR94392]	2020-04-03 10:10:07 +02:00
libhsail-rt	Add `--with-toolexeclibdir=' configuration option	2020-01-24 11:24:25 +00:00
libiberty	Keep .GCC.command.line sections of LTO objetcs	2020-03-05 08:44:11 +01:00
libitm	Use a non-empty test program to test ability to link.	2020-02-12 13:22:07 -08:00
libobjc	Use a non-empty test program to test ability to link.	2020-02-12 13:22:07 -08:00
liboffloadmic	Add `--with-toolexeclibdir=' configuration option	2020-01-24 11:24:25 +00:00
libphobos	libphobos: Reset libtool_VERSION to 1:0:0	2020-03-16 17:04:18 +01:00
libquadmath	Use a non-empty test program to test ability to link.	2020-02-12 13:22:07 -08:00
libsanitizer	Darwin, libsanitizer: Adjust minimum supported Darwin version (PR93731).	2020-03-01 14:40:57 +00:00
libssp	Use a non-empty test program to test ability to link.	2020-02-12 13:22:07 -08:00
libstdc++-v3	libstdc++: Fix std::to_address for debug iterators (PR 93960)	2020-04-03 10:42:20 +01:00
libvtv	Add `--with-toolexeclibdir=' configuration option	2020-01-24 11:24:25 +00:00
lto-plugin	API extension for binutils (type of symbols).	2020-03-19 16:56:27 +01:00
maintainer-scripts	maintainer-scripts: Fix up gcc_release without -l, where mkdir was using umask 077 after migration	2020-03-12 18:30:16 +01:00
zlib	Add `--with-toolexeclibdir=' configuration option	2020-01-24 11:24:25 +00:00
.dir-locals.el	…
.gitattributes	Add *.md diff=md.	2020-01-15 14:29:53 +01:00
.gitignore	Add .clangd and compile_commands.json to .gitignore.	2019-08-28 19:33:28 +00:00
ABOUT-NLS	…
COPYING	…
COPYING.LIB	…
COPYING.RUNTIME	…
COPYING3	…
COPYING3.LIB	…
ChangeLog	configure - build libgomp by default for amdgcn	2020-03-09 17:00:39 +01:00
ChangeLog.jit	…
ChangeLog.tree-ssa	…
MAINTAINERS	Update myself to MAINTAINERS	2020-03-11 23:32:40 -04:00
Makefile.def	Sync top-level change from gdb	2019-06-15 21:32:03 +00:00
Makefile.in	Makefile.tpl (HOST_EXPORTS): Add CXX_FOR_BUILD.	2019-08-23 15:37:22 -06:00
Makefile.tpl	Makefile.tpl (HOST_EXPORTS): Add CXX_FOR_BUILD.	2019-08-23 15:37:22 -06:00
README	…
ar-lib	…
compile	…
config-ml.in	MSP430: Add -fno-exceptions multilib	2019-12-11 19:19:50 +00:00
config.guess	Update config.sub and config.guess.	2019-09-09 11:14:32 +02:00
config.rpath	…
config.sub	Update config.sub and config.guess.	2019-09-09 11:14:32 +02:00
configure	configure - build libgomp by default for amdgcn	2020-03-09 17:00:39 +01:00
configure.ac	configure - build libgomp by default for amdgcn	2020-03-09 17:00:39 +01:00
depcomp	…
install-sh	…
libtool-ldflags	…
libtool.m4	[ARM/FDPIC v6 02/24] [ARM] FDPIC: Handle arm--uclinuxfdpiceabi in configure scripts	2019-09-10 09:37:00 +02:00
ltgcc.m4	…
ltmain.sh	…
ltoptions.m4	…
ltsugar.m4	…
ltversion.m4	…
lt~obsolete.m4	…
missing	…
mkdep	…
mkinstalldirs	…
move-if-change	…
multilib.am	…
symlink-tree	…
test-driver	…
ylwrap	…

README

This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with COPYING for copying permission.  The manuals, and
some of the runtime libraries, are under different terms; see the
individual source files for details.

The directory INSTALL contains copies of the installation information
as HTML and plain text.  The source of this information is
gcc/doc/install.texi.  The installation information includes details
of what is included in the GCC sources and what files GCC installs.

See the file gcc/doc/gcc.texi (together with other files that it
includes) for usage and porting information.  An online readable
version of the manual is in the files gcc/doc/gcc.info*.

See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

Copyright years on GCC source files may be listed using range
notation, e.g., 1987-2012, indicating that every year in the range,
inclusive, is a copyrightable year that could otherwise be listed
individually.