public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/42549] New: Incorrect 3DNow! code generated
@ 2009-12-29 22:49 debian-gcc at lists dot debian dot org
2009-12-30 10:57 ` [Bug target/42549] " ubizjak at gmail dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: debian-gcc at lists dot debian dot org @ 2009-12-29 22:49 UTC (permalink / raw)
To: gcc-bugs
[forwarded from http://bugs.debian.org/560812]
With the following simple test file, the 3DNow! generated code is
incorrect, with final _m_pfsub generated as pfsubr %mm0,%mm0, thus
producing completely incorrect result.
seen with current branches and trunk.
Matthias
*** main.c
#include <mm3dnow.h>
void Butterfly_3(__m64 *D,__m64 SC,unsigned int IStep,unsigned int Off)
{ __m64 T,T1,T2;
T = _m_pfmul(D[Off+1], SC);
T1 = D[Off+0];
D[Off+0] = _m_pfadd(T1, T);
D[Off+1] = _m_pfsub(T1, T);
}
The command line is:
gcc -march=athlon -S -O3 main.c
The generated code is:
*** main.s
.file "main.c"
.text
.p2align 4,,15
.globl Butterfly_3
.type Butterfly_3, @function
Butterfly_3:
pushl %ebp
movl %esp, %ebp
movl 8(%ebp), %edx
movl 16(%ebp), %ecx
leal 8(%edx,%ecx,8), %eax
leal (%edx,%ecx,8), %edx
pfmul (%eax), %mm0
movq (%edx), %mm1
movq %mm1, %mm2
pfadd %mm0, %mm2
pfsubr %mm0, %mm0
movq %mm2, (%edx)
movq %mm0, (%eax)
leave
ret
.size Butterfly_3, .-Butterfly_3
.ident "GCC: (Debian 4.4.2-4) 4.4.2"
.section .note.GNU-stack,"",@progbits
--
Summary: Incorrect 3DNow! code generated
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: debian-gcc at lists dot debian dot org
GCC target triplet: i486-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42549
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/42549] Incorrect 3DNow! code generated
2009-12-29 22:49 [Bug target/42549] New: Incorrect 3DNow! code generated debian-gcc at lists dot debian dot org
@ 2009-12-30 10:57 ` ubizjak at gmail dot com
2009-12-30 11:07 ` uros at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: ubizjak at gmail dot com @ 2009-12-30 10:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from ubizjak at gmail dot com 2009-12-30 10:57 -------
Confirmed, I have a patch.
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |ubizjak at gmail dot com
|dot org |
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-12-30 10:57:27
date| |
Target Milestone|--- |4.3.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42549
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/42549] Incorrect 3DNow! code generated
2009-12-29 22:49 [Bug target/42549] New: Incorrect 3DNow! code generated debian-gcc at lists dot debian dot org
2009-12-30 10:57 ` [Bug target/42549] " ubizjak at gmail dot com
@ 2009-12-30 11:07 ` uros at gcc dot gnu dot org
2009-12-30 11:35 ` uros at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: uros at gcc dot gnu dot org @ 2009-12-30 11:07 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from uros at gcc dot gnu dot org 2009-12-30 11:07 -------
Subject: Bug 42549
Author: uros
Date: Wed Dec 30 11:07:12 2009
New Revision: 155519
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155519
Log:
PR target/42549
* config/i386/mmx.md ("*mmx_subv2sf3): Fix insn operand number for
alternative 1.
testsuite/ChangeLog:
PR target/42549
* gcc.target/i386/mmx-3dnow-check.h: New file.
* gcc.target/i386/pr42549.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/mmx-3dnow-check.h
trunk/gcc/testsuite/gcc.target/i386/pr42549.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/mmx.md
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42549
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/42549] Incorrect 3DNow! code generated
2009-12-29 22:49 [Bug target/42549] New: Incorrect 3DNow! code generated debian-gcc at lists dot debian dot org
2009-12-30 10:57 ` [Bug target/42549] " ubizjak at gmail dot com
2009-12-30 11:07 ` uros at gcc dot gnu dot org
@ 2009-12-30 11:35 ` uros at gcc dot gnu dot org
2009-12-30 11:47 ` uros at gcc dot gnu dot org
2009-12-30 11:49 ` ubizjak at gmail dot com
4 siblings, 0 replies; 6+ messages in thread
From: uros at gcc dot gnu dot org @ 2009-12-30 11:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from uros at gcc dot gnu dot org 2009-12-30 11:35 -------
Subject: Bug 42549
Author: uros
Date: Wed Dec 30 11:34:57 2009
New Revision: 155521
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155521
Log:
PR target/42549
* config/i386/mmx.md (*mmx_subv2sf3): Fix insn operand number for
alternative 1.
testsuite/ChangeLog:
PR target/42549
* gcc.target/i386/mmx-3dnow-check.h: New file.
* gcc.target/i386/pr42549.c: New test.
Added:
branches/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/mmx-3dnow-check.h
branches/gcc-4_4-branch/gcc/testsuite/gcc.target/i386/pr42549.c
Modified:
branches/gcc-4_4-branch/gcc/ChangeLog
branches/gcc-4_4-branch/gcc/config/i386/mmx.md
branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42549
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/42549] Incorrect 3DNow! code generated
2009-12-29 22:49 [Bug target/42549] New: Incorrect 3DNow! code generated debian-gcc at lists dot debian dot org
` (2 preceding siblings ...)
2009-12-30 11:35 ` uros at gcc dot gnu dot org
@ 2009-12-30 11:47 ` uros at gcc dot gnu dot org
2009-12-30 11:49 ` ubizjak at gmail dot com
4 siblings, 0 replies; 6+ messages in thread
From: uros at gcc dot gnu dot org @ 2009-12-30 11:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from uros at gcc dot gnu dot org 2009-12-30 11:47 -------
Subject: Bug 42549
Author: uros
Date: Wed Dec 30 11:47:30 2009
New Revision: 155522
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155522
Log:
PR target/42549
* config/i386/mmx.md (*mmx_subv2sf3): Fix insn operand number for
alternative 1.
testsuite/ChangeLog:
PR target/42549
* gcc.target/i386/mmx-3dnow-check.h: New file.
* gcc.target/i386/pr42549.c: New test.
Added:
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/mmx-3dnow-check.h
branches/gcc-4_3-branch/gcc/testsuite/gcc.target/i386/pr42549.c
Modified:
branches/gcc-4_3-branch/gcc/ChangeLog
branches/gcc-4_3-branch/gcc/config/i386/mmx.md
branches/gcc-4_3-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42549
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/42549] Incorrect 3DNow! code generated
2009-12-29 22:49 [Bug target/42549] New: Incorrect 3DNow! code generated debian-gcc at lists dot debian dot org
` (3 preceding siblings ...)
2009-12-30 11:47 ` uros at gcc dot gnu dot org
@ 2009-12-30 11:49 ` ubizjak at gmail dot com
4 siblings, 0 replies; 6+ messages in thread
From: ubizjak at gmail dot com @ 2009-12-30 11:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from ubizjak at gmail dot com 2009-12-30 11:49 -------
Fixed.
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2009-
| |12/msg01205.html
Status|ASSIGNED |RESOLVED
Keywords| |ssemmx
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42549
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-12-30 11:49 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-12-29 22:49 [Bug target/42549] New: Incorrect 3DNow! code generated debian-gcc at lists dot debian dot org
2009-12-30 10:57 ` [Bug target/42549] " ubizjak at gmail dot com
2009-12-30 11:07 ` uros at gcc dot gnu dot org
2009-12-30 11:35 ` uros at gcc dot gnu dot org
2009-12-30 11:47 ` uros at gcc dot gnu dot org
2009-12-30 11:49 ` ubizjak at gmail dot com
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).