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* [Bug middle-end/54219] New: __builtin_shuffle mask reversed
@ 2012-08-10 10:40 glisse at gcc dot gnu.org
2012-08-10 10:59 ` [Bug middle-end/54219] [4.8 Regression] " rguenth at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: glisse at gcc dot gnu.org @ 2012-08-10 10:40 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54219
Bug #: 54219
Summary: __builtin_shuffle mask reversed
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: glisse@gcc.gnu.org
Hello,
#include <x86intrin.h>
__m128d f(__m128d x){
__m128i m={5,0};
return __builtin_shuffle(x,x,m);
}
$ gcc u.c -O2 -S -Wall
produces a simple rep; ret. However, if I replace 5 with 1, it does produce the
expected shufpd.
fold-const.c contains this loop:
for (i = 0; i < nelts; i++)
tsel[i] = build_int_cst (eltype, sel[nelts - i - 1]);
which reverses the order of the elements in the mask. I don't know if there is
any reason to do that...
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/54219] [4.8 Regression] __builtin_shuffle mask reversed
2012-08-10 10:40 [Bug middle-end/54219] New: __builtin_shuffle mask reversed glisse at gcc dot gnu.org
@ 2012-08-10 10:59 ` rguenth at gcc dot gnu.org
2012-08-10 11:00 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-08-10 10:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54219
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Keywords| |wrong-code
Last reconfirmed| |2012-08-10
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
Ever Confirmed|0 |1
Summary|__builtin_shuffle mask |[4.8 Regression]
|reversed |__builtin_shuffle mask
| |reversed
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-10 10:59:20 UTC ---
Probably an error of mine when I converted VECTOR_CSTs to a more sane
representation.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/54219] [4.8 Regression] __builtin_shuffle mask reversed
2012-08-10 10:40 [Bug middle-end/54219] New: __builtin_shuffle mask reversed glisse at gcc dot gnu.org
2012-08-10 10:59 ` [Bug middle-end/54219] [4.8 Regression] " rguenth at gcc dot gnu.org
@ 2012-08-10 11:00 ` rguenth at gcc dot gnu.org
2012-08-10 13:35 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-08-10 11:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54219
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.0
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/54219] [4.8 Regression] __builtin_shuffle mask reversed
2012-08-10 10:40 [Bug middle-end/54219] New: __builtin_shuffle mask reversed glisse at gcc dot gnu.org
2012-08-10 10:59 ` [Bug middle-end/54219] [4.8 Regression] " rguenth at gcc dot gnu.org
2012-08-10 11:00 ` rguenth at gcc dot gnu.org
@ 2012-08-10 13:35 ` rguenth at gcc dot gnu.org
2012-08-10 13:36 ` rguenth at gcc dot gnu.org
2012-08-10 13:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-08-10 13:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54219
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-10 13:35:40 UTC ---
Author: rguenth
Date: Fri Aug 10 13:35:34 2012
New Revision: 190297
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190297
Log:
2012-08-10 Richard Guenther <rguenther@suse.de>
PR middle-end/54219
* fold-const.c (fold_ternary_loc): Do not reverse the mask
when canonicalizing it when folding VEC_PERM_EXPR.
* gcc.dg/torture/vector-shuffle1.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/vector-shuffle1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/54219] [4.8 Regression] __builtin_shuffle mask reversed
2012-08-10 10:40 [Bug middle-end/54219] New: __builtin_shuffle mask reversed glisse at gcc dot gnu.org
` (3 preceding siblings ...)
2012-08-10 13:36 ` rguenth at gcc dot gnu.org
@ 2012-08-10 13:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-08-10 13:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54219
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-10 13:35:40 UTC ---
Author: rguenth
Date: Fri Aug 10 13:35:34 2012
New Revision: 190297
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190297
Log:
2012-08-10 Richard Guenther <rguenther@suse.de>
PR middle-end/54219
* fold-const.c (fold_ternary_loc): Do not reverse the mask
when canonicalizing it when folding VEC_PERM_EXPR.
* gcc.dg/torture/vector-shuffle1.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/vector-shuffle1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-10 13:36:10 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/54219] [4.8 Regression] __builtin_shuffle mask reversed
2012-08-10 10:40 [Bug middle-end/54219] New: __builtin_shuffle mask reversed glisse at gcc dot gnu.org
` (2 preceding siblings ...)
2012-08-10 13:35 ` rguenth at gcc dot gnu.org
@ 2012-08-10 13:36 ` rguenth at gcc dot gnu.org
2012-08-10 13:36 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-08-10 13:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54219
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-08-10 13:36:10 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-08-10 13:36 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2012-08-10 10:40 [Bug middle-end/54219] New: __builtin_shuffle mask reversed glisse at gcc dot gnu.org
2012-08-10 10:59 ` [Bug middle-end/54219] [4.8 Regression] " rguenth at gcc dot gnu.org
2012-08-10 11:00 ` rguenth at gcc dot gnu.org
2012-08-10 13:35 ` rguenth at gcc dot gnu.org
2012-08-10 13:36 ` rguenth at gcc dot gnu.org
2012-08-10 13:36 ` rguenth at gcc dot gnu.org
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