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* [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc @ 2005-04-21 13:07 julien dot pommier at insa-toulouse dot fr 2005-04-21 13:14 ` [Bug target/21149] " pinskia at gcc dot gnu dot org ` (7 more replies) 0 siblings, 8 replies; 9+ messages in thread From: julien dot pommier at insa-toulouse dot fr @ 2005-04-21 13:07 UTC (permalink / raw) To: gcc-bugs The following code does generate wrong results when optimization is turned on : #include <stdio.h> #include <xmmintrin.h> void pv(const char *s, __m128 v) { float *p = (float*)&v; printf("%s=[%g %g %g %g]\n", s,p[0],p[1],p[2],p[3]); } #define P(x) pv(#x,x) static void plop(__m128 *Y) { __m128 zero = _mm_setzero_ps(); __m128 foo = _mm_movehl_ps(zero, *Y); __m128 bar = _mm_movehl_ps(*Y, zero); P(*Y);P(foo);P(bar); } int main() { __m128 y=_mm_set_ps(-3,2,1,9); plop(&y); return 0; } Here are some outputs: > gcc-3.4 -O3 -Wall -W -msse -o toto toto.c && ./toto *Y=[9 1 2 -3] foo=[0 0 9 1] bar=[9 1 0 0] > gcc-4.0 -g -O0 -Wall -W -msse -o toto toto.c && ./toto *Y=[9 1 2 -3] foo=[2 -3 0 0] bar=[0 0 2 -3] (this one is correct) > gcc-4.0 -O3 -Wall -W -msse -o toto toto.c && ./toto *Y=[9 1 2 -3] foo=[9 1 0 0] bar=[0 0 2 -3] (same output with gcc-4.1 from cvs) Tested with: gcc-3.4 (GCC) 3.4.4 20050314 (prerelease) (Debian 3.4.3-12) gcc-4.0 (GCC) 4.0.0 20050410 (prerelease) (Debian 4.0-0pre10) gcc (GCC) 4.0.0 20050418 (prerelease) gcc (GCC) 4.1.0 20050421 (experimental) -- Summary: invalid code generation for _mm_movehl_ps SSE intrisinc Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: critical Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: julien dot pommier at insa-toulouse dot fr CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr @ 2005-04-21 13:14 ` pinskia at gcc dot gnu dot org 2005-07-06 14:36 ` pinskia at gcc dot gnu dot org ` (6 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-04-21 13:14 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Component|c |target Keywords| |ssemmx, wrong-code http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr 2005-04-21 13:14 ` [Bug target/21149] " pinskia at gcc dot gnu dot org @ 2005-07-06 14:36 ` pinskia at gcc dot gnu dot org 2005-07-20 15:26 ` pinskia at gcc dot gnu dot org ` (5 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-07-06 14:36 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-06 14:36 ------- Note You are validing C aliasing rules: float *p = (float*)&v; Use an union or -fno-strict-aliasing. But that does not change the problem. -- What |Removed |Added ---------------------------------------------------------------------------- Severity|critical |normal http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr 2005-04-21 13:14 ` [Bug target/21149] " pinskia at gcc dot gnu dot org 2005-07-06 14:36 ` pinskia at gcc dot gnu dot org @ 2005-07-20 15:26 ` pinskia at gcc dot gnu dot org 2005-07-21 19:59 ` cvs-commit at gcc dot gnu dot org ` (4 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-07-20 15:26 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-20 15:20 ------- Patch here: <http://gcc.gnu.org/ml/gcc-patches/2005-07/msg01318.html>. -- What |Removed |Added ---------------------------------------------------------------------------- URL| |http://gcc.gnu.org/ml/gcc- | |patches/2005- | |07/msg01318.html Status|UNCONFIRMED |NEW Ever Confirmed| |1 Keywords| |patch Last reconfirmed|0000-00-00 00:00:00 |2005-07-20 15:20:16 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr ` (2 preceding siblings ...) 2005-07-20 15:26 ` pinskia at gcc dot gnu dot org @ 2005-07-21 19:59 ` cvs-commit at gcc dot gnu dot org 2005-07-21 20:03 ` cvs-commit at gcc dot gnu dot org ` (3 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-07-21 19:59 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-07-21 19:58 ------- Subject: Bug 21149 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-4_0-branch Changes by: rth@gcc.gnu.org 2005-07-21 19:58:31 Modified files: gcc : ChangeLog gcc/config/i386: sse.md Log message: PR target/21149 * config/i386/i386.md (sse_movhlps): Fix vec_select values. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.326&r2=2.7592.2.327 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/sse.md.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.7&r2=1.7.14.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr ` (3 preceding siblings ...) 2005-07-21 19:59 ` cvs-commit at gcc dot gnu dot org @ 2005-07-21 20:03 ` cvs-commit at gcc dot gnu dot org 2005-07-21 20:33 ` pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-07-21 20:03 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-07-21 19:59 ------- Subject: Bug 21149 CVSROOT: /cvs/gcc Module name: gcc Changes by: rth@gcc.gnu.org 2005-07-21 19:59:09 Modified files: gcc : ChangeLog gcc/config/i386: sse.md Log message: PR target/21149 * config/i386/i386.md (sse_movhlps): Fix vec_select values. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9505&r2=2.9506 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/sse.md.diff?cvsroot=gcc&r1=1.21&r2=1.22 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr ` (4 preceding siblings ...) 2005-07-21 20:03 ` cvs-commit at gcc dot gnu dot org @ 2005-07-21 20:33 ` pinskia at gcc dot gnu dot org 2005-07-28 14:39 ` cvs-commit at gcc dot gnu dot org 2005-07-28 14:47 ` cvs-commit at gcc dot gnu dot org 7 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-07-21 20:33 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-21 20:33 ------- Fixed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |4.0.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr ` (5 preceding siblings ...) 2005-07-21 20:33 ` pinskia at gcc dot gnu dot org @ 2005-07-28 14:39 ` cvs-commit at gcc dot gnu dot org 2005-07-28 14:47 ` cvs-commit at gcc dot gnu dot org 7 siblings, 0 replies; 9+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-07-28 14:39 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-07-28 14:38 ------- Subject: Bug 21149 CVSROOT: /cvs/gcc Module name: gcc Changes by: jakub@gcc.gnu.org 2005-07-28 14:38:13 Modified files: gcc/testsuite : ChangeLog Added files: gcc/testsuite/gcc.target/i386: sse-3.c Log message: PR target/21149 * gcc.target/i386/sse-3.c: New test. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5838&r2=1.5839 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.target/i386/sse-3.c.diff?cvsroot=gcc&r1=NONE&r2=1.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug target/21149] invalid code generation for _mm_movehl_ps SSE intrisinc 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr ` (6 preceding siblings ...) 2005-07-28 14:39 ` cvs-commit at gcc dot gnu dot org @ 2005-07-28 14:47 ` cvs-commit at gcc dot gnu dot org 7 siblings, 0 replies; 9+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2005-07-28 14:47 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-07-28 14:41 ------- Subject: Bug 21149 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-4_0-branch Changes by: jakub@gcc.gnu.org 2005-07-28 14:41:25 Modified files: gcc/testsuite : ChangeLog Added files: gcc/testsuite/gcc.target/i386: sse-3.c Log message: PR target/21149 * gcc.target/i386/sse-3.c: New test. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.305&r2=1.5084.2.306 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.target/i386/sse-3.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21149 ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2005-07-28 14:41 UTC | newest] Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2005-04-21 13:07 [Bug c/21149] New: invalid code generation for _mm_movehl_ps SSE intrisinc julien dot pommier at insa-toulouse dot fr 2005-04-21 13:14 ` [Bug target/21149] " pinskia at gcc dot gnu dot org 2005-07-06 14:36 ` pinskia at gcc dot gnu dot org 2005-07-20 15:26 ` pinskia at gcc dot gnu dot org 2005-07-21 19:59 ` cvs-commit at gcc dot gnu dot org 2005-07-21 20:03 ` cvs-commit at gcc dot gnu dot org 2005-07-21 20:33 ` pinskia at gcc dot gnu dot org 2005-07-28 14:39 ` cvs-commit at gcc dot gnu dot org 2005-07-28 14:47 ` cvs-commit at gcc dot gnu dot org
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