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* [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
@ 2010-10-19 19:34 hjl.tools at gmail dot com
2010-10-19 19:35 ` [Bug tree-optimization/46085] " hjl.tools at gmail dot com
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-19 19:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
Summary: [4..6 Regression]
gcc.dg/vect/fast-math-vect-reduc-[57].c failed with
-mavx -ffast-math -O3
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: hjl.tools@gmail.com
[hjl@gnu-18 gcc]$ ./xgcc -B./
/export/gnu/import/git/gcc-avx/gcc/testsuite/gcc.dg/vect/fast-math-vect-reduc-5.c
-mavx -ffast-math -O3[hjl@gnu-18 gcc]$ ./a.out
Aborted
[hjl@gnu-18 gcc]$ ./xgcc -B./
/export/gnu/import/git/gcc-avx/gcc/testsuite/gcc.dg/vect/fast-math-vect-reduc-7.c
-mavx -ffast-math -O3
[hjl@gnu-18 gcc]$ ./a.out
Aborted
[hjl@gnu-18 gcc]$
They failed due to 256bit vectorizer.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46085] [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
2010-10-19 19:34 [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3 hjl.tools at gmail dot com
@ 2010-10-19 19:35 ` hjl.tools at gmail dot com
2010-10-19 19:48 ` hjl.tools at gmail dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-19 19:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
Target Milestone|--- |4.6.0
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46085] [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
2010-10-19 19:34 [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3 hjl.tools at gmail dot com
2010-10-19 19:35 ` [Bug tree-optimization/46085] " hjl.tools at gmail dot com
@ 2010-10-19 19:48 ` hjl.tools at gmail dot com
2010-10-19 21:32 ` hjl.tools at gmail dot com
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-19 19:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-19 19:48:35 UTC ---
[hjl@gnu-18 gcc]$ cat x.c
extern void abort ();
float b[16] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
float c[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
int main ()
{
int i;
float diff = 2;
for (i = 0; i < 16; i++) {
diff += (b[i] - c[i]);
}
if (diff != 242)
abort ();
return 0;
}
[hjl@gnu-18 gcc]$ ./xgcc -B./ x.c -ftree-vectorize -g -mavx -O -ffast-math
[hjl@gnu-18 gcc]$ ./a.out
Aborted
[hjl@gnu-18 gcc]$ ./xgcc -B./ x.c -ftree-vectorize -g -mavx -O -ffast-math
-mno-avx -msse4
[hjl@gnu-18 gcc]$ ./a.out
[hjl@gnu-18 gcc]$
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46085] [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
2010-10-19 19:34 [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3 hjl.tools at gmail dot com
2010-10-19 19:35 ` [Bug tree-optimization/46085] " hjl.tools at gmail dot com
2010-10-19 19:48 ` hjl.tools at gmail dot com
@ 2010-10-19 21:32 ` hjl.tools at gmail dot com
2010-10-19 22:15 ` hjl.tools at gmail dot com
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-19 21:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-19 21:32:05 UTC ---
(define_expand "reduc_splus_v8sf"
[(match_operand:V8SF 0 "register_operand" "")
(match_operand:V8SF 1 "register_operand" "")]
"TARGET_AVX"
{
rtx tmp = gen_reg_rtx (V8SFmode);
rtx tmp2 = gen_reg_rtx (V8SFmode);
emit_insn (gen_avx_haddv8sf3 (tmp, operands[1], operands[1]));
emit_insn (gen_avx_haddv8sf3 (tmp2, operands[1], operands[1]));
emit_insn (gen_avx_haddv8sf3 (operands[0], tmp2, tmp2));
DONE;
})
and
(define_expand "reduc_splus_v4df"
[(match_operand:V4DF 0 "register_operand" "")
(match_operand:V4DF 1 "register_operand" "")]
"TARGET_AVX"
{
rtx tmp = gen_reg_rtx (V4DFmode);
emit_insn (gen_avx_haddv4df3 (tmp, operands[1], operands[1]));
emit_insn (gen_avx_haddv4df3 (operands[0], tmp, tmp));
DONE;
})
are incorrect.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46085] [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
2010-10-19 19:34 [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3 hjl.tools at gmail dot com
` (2 preceding siblings ...)
2010-10-19 21:32 ` hjl.tools at gmail dot com
@ 2010-10-19 22:15 ` hjl.tools at gmail dot com
2010-10-20 11:21 ` hjl at gcc dot gnu.org
2010-10-20 11:26 ` hjl.tools at gmail dot com
5 siblings, 0 replies; 7+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-19 22:15 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-p
| |atches/2010-10/msg01681.htm
| |l
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-19 22:15:07 UTC ---
A patch is posted at
http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01681.html
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46085] [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
2010-10-19 19:34 [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3 hjl.tools at gmail dot com
` (3 preceding siblings ...)
2010-10-19 22:15 ` hjl.tools at gmail dot com
@ 2010-10-20 11:21 ` hjl at gcc dot gnu.org
2010-10-20 11:26 ` hjl.tools at gmail dot com
5 siblings, 0 replies; 7+ messages in thread
From: hjl at gcc dot gnu.org @ 2010-10-20 11:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
--- Comment #4 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2010-10-20 11:21:22 UTC ---
Author: hjl
Date: Wed Oct 20 11:21:19 2010
New Revision: 165719
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165719
Log:
Correct reduc_splus_v8sf and reduc_splus_v4df.
gcc/
2010-10-20 H.J. Lu <hongjiu.lu@intel.com>
PR target/46085
* config/i386/sse.md (reduc_splus_v8sf): Updated.
(reduc_splus_v4df): Likewise.
gcc/testsuite/
2010-10-20 H.J. Lu <hongjiu.lu@intel.com>
PR target/46085
* gcc.target/i386/pr46085-1.c: New.
* gcc.target/i386/pr46085-2.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr46085-1.c
trunk/gcc/testsuite/gcc.target/i386/pr46085-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/sse.md
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46085] [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3
2010-10-19 19:34 [Bug tree-optimization/46085] New: [4..6 Regression] gcc.dg/vect/fast-math-vect-reduc-[57].c failed with -mavx -ffast-math -O3 hjl.tools at gmail dot com
` (4 preceding siblings ...)
2010-10-20 11:21 ` hjl at gcc dot gnu.org
@ 2010-10-20 11:26 ` hjl.tools at gmail dot com
5 siblings, 0 replies; 7+ messages in thread
From: hjl.tools at gmail dot com @ 2010-10-20 11:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46085
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-20 11:26:39 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
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