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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 ` (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
* [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
end of thread, other threads:[~2012-08-10 13:36 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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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