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Mirror of the gcc repository for submitting merge requests. FORK
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Filename Latest commit message Latest commit date
Hongyu Wang 6d1b92ce27 i386: Don't turn quiet FP comparisons into signaling ones [PR127177] 
The unordered compares (UNLT, UNLE, UNGT, UNGE and UNEQ) must not raise
FE_INVALID on a quiet NaN.  AVX and AVX512 have an imm8 encoding for the
quiet _UQ predicate of each, so just select it.

Legacy SSE2 has only 8 predicates and can express UNGE/UNGT/UNLT/UNLE
only as the signaling NLT/NLE, so reject those four codes in the packed
FP vec_cmp expanders when trapping math is in effect and NaNs are honored.

gcc/ChangeLog:

	PR target/127177
	* config/i386/i386-expand.cc (ix86_fp_cmp_code_to_pcmp_immediate):
	Return the _UQ predicate immediates for UNLE, UNLT, UNGE, UNGT and
	UNEQ.
	* config/i386/i386.cc (ix86_print_operand):Likewise to print the
	_uq suffixed AVX predicates for these codes.
	* config/i386/predicates.md (ix86_fp_vec_cmp_operator): New
	predicate.
	* config/i386/sse.md (vec_cmp<mode><sseintvecmodelower>): Use the
	new predicate for the VF_128 compare.
	* config/i386/mmx.md (vec_cmpv2sfv2si): Likewise.

gcc/testsuite/ChangeLog:

	PR target/127177
	* gcc.target/i386/pr127177-1.c: New test.
	* gcc.target/i386/pr127177-2.c: Likewise.
	* gcc.target/i386/pr127177-3.c: Likewise.
	* gcc.target/i386/pr127177-4.c: Likewise.
	* gcc.target/i386/pr127177-5.c: Likewise.
2026-09-15 09:29:41 +08:00
.forgejo forge: Add a prototype CODEOWNERS file 2026-06-05 17:58:58 +01:00
.github Mention the forge on unofficial mirrors 2026-07-24 07:43:47 +00:00
c++tools Daily bump. 2026-06-30 00:16:45 +00:00
config Daily bump. 2026-09-05 00:16:38 +00:00
contrib Daily bump. 2026-09-11 08:56:57 +00:00
fixincludes Daily bump. 2026-06-30 00:16:45 +00:00
gcc i386: Don't turn quiet FP comparisons into signaling ones [PR127177] 2026-09-15 09:29:41 +08:00
gnattools Daily bump. 2026-06-30 00:16:45 +00:00
gotools Daily bump. 2026-06-30 00:16:45 +00:00
include Daily bump. 2026-09-07 00:16:33 +00:00
INSTALL README: Do not mention CVS. 2014-10-12 15:05:28 +00:00
libada Daily bump. 2026-06-30 00:16:45 +00:00
libatomic Daily bump. 2026-06-30 00:16:45 +00:00
libbacktrace Daily bump. 2026-09-04 00:16:40 +00:00
libcc1 Daily bump. 2026-06-30 00:16:45 +00:00
libcody Daily bump. 2026-05-31 00:16:35 +00:00
libcpp Daily bump. 2026-09-03 00:16:44 +00:00
libdecnumber Daily bump. 2026-05-31 00:16:35 +00:00
libffi Daily bump. 2026-06-18 00:16:35 +00:00
libga68 Daily bump. 2026-08-07 00:16:48 +00:00
libgcc Daily bump. 2026-09-12 00:16:35 +00:00
libgcobol Daily bump. 2026-09-11 08:56:57 +00:00
libgfortran Daily bump. 2026-09-07 00:16:33 +00:00
libgm2 Daily bump. 2026-09-14 00:16:34 +00:00
libgo libgo: cmd/go: use 'gcloud storage cp' instead of 'gsutil cp' 2026-05-02 16:21:35 -07:00
libgomp Daily bump. 2026-09-12 00:16:35 +00:00
libgrust Daily bump. 2026-06-30 00:16:45 +00:00
libiberty Daily bump. 2026-07-02 00:16:40 +00:00
libitm Daily bump. 2026-07-10 00:16:35 +00:00
libobjc Daily bump. 2026-06-30 00:16:45 +00:00
libphobos Daily bump. 2026-07-11 00:16:37 +00:00
libquadmath Daily bump. 2026-06-30 00:16:45 +00:00
libsanitizer Daily bump. 2026-07-24 00:16:42 +00:00
libssp Daily bump. 2026-07-04 00:16:37 +00:00
libstdc++-v3 Daily bump. 2026-09-15 00:16:35 +00:00
libvtv Daily bump. 2026-06-30 00:16:45 +00:00
lto-plugin Daily bump. 2026-06-30 00:16:45 +00:00
maintainer-scripts Daily bump. 2026-09-13 00:16:32 +00:00
zlib Daily bump. 2025-12-30 00:16:33 +00:00
.b4-config Add config file so b4 uses inbox.sourceware.org automatically 2024-07-28 11:13:16 +01:00
.dir-locals.el dir-locals: apply our C settings in C++ also 2024-07-31 20:38:27 +02:00
.editorconfig editorconfig: Add rules for yaml/yml files. 2026-07-07 11:02:11 +01:00
.gitattributes Add *.md diff=md. 2020-01-15 14:29:53 +01:00
.gitignore Add a pyproject.toml file 2026-08-19 10:51:25 +00:00
ABOUT-NLS intl: New directory; see intl/ChangeLog for details. 2003-07-04 18:18:54 +00:00
ar-lib Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
ChangeLog Daily bump. 2026-09-11 08:56:57 +00:00
ChangeLog.jit Merger of dmalcolm/jit branch from git 2014-11-11 21:55:52 +00:00
ChangeLog.tree-ssa Merge tree-ssa-20020619-branch into mainline. 2004-05-13 02:41:07 -04:00
compile Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
config-ml.in toplevel: Unbreak Ada build [PR123490] 2026-01-10 11:36:25 +01:00
config.guess config.sub, config.guess : Import upstream 2021-01-25. 2021-02-23 17:21:10 +08:00
config.rpath Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 11:45:53 +00:00
config.sub config.sub: change mode to 755. 2021-12-21 09:10:57 +01:00
configure Makefile.tpl: make the parallel bootstrap comparison portable [PR126875] 2026-09-04 15:16:54 +02:00
configure.ac configure: reject unsupported --with-long-double-64 option [PR122535] 2026-09-02 12:11:59 +05:30
COPYING COPYING, [...]: Sync from upstream sources. 2005-07-14 01:08:13 +00:00
COPYING.LIB Update COPYING.LIB from upstream. Correct last Changelog. 2005-07-14 01:41:54 +00:00
COPYING.RUNTIME Licensing changes to GPLv3 resp. GPLv3 with GCC Runtime Exception. 2009-04-09 17:00:19 +02:00
COPYING3 COPYING_v3: New file. 2007-07-17 08:37:53 +00:00
COPYING3.LIB COPYING_v3: New file. 2007-07-17 08:37:53 +00:00
depcomp Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
install-sh Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
libtool-ldflags re PR sanitizer/56781 (boostrap-asan failure: fixincl fails to link (missing -lasan)) 2014-04-17 14:23:28 +02:00
libtool.m4 build: Cherry-pick libtool.m4 support for GNU ld *_sol2 emulations 2025-12-29 12:09:35 +01:00
ltgcc.m4 libtool.m4: Update to libtool 2.2.6. 2008-09-26 16:21:02 +00:00
ltmain.sh ltmain.sh: allow more flags at link-time 2024-09-25 19:05:24 +01:00
ltoptions.m4 Sync from git Libtool and regenerate. 2009-12-05 17:18:53 +00:00
ltsugar.m4 libtool.m4: Update to libtool 2.2.6. 2008-09-26 16:21:02 +00:00
ltversion.m4 Sync from git Libtool and regenerate. 2009-12-05 17:18:53 +00:00
lt~obsolete.m4 Sync from git Libtool and regenerate. 2009-12-05 17:18:53 +00:00
MAINTAINERS MAINTAINERS: Add myself to Write After Approval 2026-09-10 20:22:47 +05:30
MAINTAINERS.yml MAINTAINERS: Add myself to Write After Approval 2026-09-10 20:22:47 +05:30
Makefile.def toplevel: do not make libstdc++ configure wait for libgomp 2026-08-17 14:00:36 +02:00
Makefile.in Makefile.tpl: make the parallel bootstrap comparison portable [PR126875] 2026-09-04 15:16:54 +02:00
Makefile.tpl Makefile.tpl: make the parallel bootstrap comparison portable [PR126875] 2026-09-04 15:16:54 +02:00
missing Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
mkdep merge with /cvs/src 2000-07-22 04:08:22 -04:00
mkinstalldirs Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
move-if-change Update move-if-change from gnulib 2014-11-16 16:12:44 +00:00
multilib.am Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
pyproject.toml Add a pyproject.toml file 2026-08-19 10:51:25 +00:00
README * README: Document use of ranges of years in copyright notices. 2012-07-16 15:01:34 +01:00
SECURITY.txt a68: top-level misc files 2025-11-30 01:52:24 +01:00
symlink-tree bugzilla: remove gcc-bugs@ mailing list address 2026-01-09 11:10:38 +01:00
test-driver Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
ylwrap Update from upstream Automake files. 2014-11-16 14:07:13 +00:00

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.