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* [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns
@ 2015-08-28 11:59 glisse at gcc dot gnu.org
2015-08-28 13:09 ` [Bug tree-optimization/67381] " rguenth at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: glisse at gcc dot gnu.org @ 2015-08-28 11:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
Bug ID: 67381
Summary: genmatch does not honor the order of patterns
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: glisse at gcc dot gnu.org
Target Milestone: ---
(simplify
(mult (BUILT_IN_SQRT@1 @0) @1)
@0)
(simplify
(mult (BUILT_IN_SQRT @0) (BUILT_IN_SQRT @1))
(BUILT_IN_SQRT (mult @0 @1)))
We can see in the generated files that it first tests if the second argument is
sqrt before checking if both arguments are the same.
See this thread: https://gcc.gnu.org/ml/gcc-patches/2015-08/msg01780.html
It causes a failure in gcc.dg/builtins-11.c
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/67381] genmatch does not honor the order of patterns
2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
@ 2015-08-28 13:09 ` rguenth at gcc dot gnu.org
2015-08-28 23:10 ` pinskia at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-08-28 13:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ah, because it doesn't consider a match to be "same" as a non-match.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/67381] genmatch does not honor the order of patterns
2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
2015-08-28 13:09 ` [Bug tree-optimization/67381] " rguenth at gcc dot gnu.org
@ 2015-08-28 23:10 ` pinskia at gcc dot gnu.org
2015-08-31 3:22 ` pinskia at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2015-08-28 23:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |schwab@linux-m68k.org
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 67389 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/67381] genmatch does not honor the order of patterns
2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
2015-08-28 13:09 ` [Bug tree-optimization/67381] " rguenth at gcc dot gnu.org
2015-08-28 23:10 ` pinskia at gcc dot gnu.org
@ 2015-08-31 3:22 ` pinskia at gcc dot gnu.org
2015-08-31 8:43 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2015-08-31 3:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hs.naveen2u at gmail dot com
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 67404 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/67381] genmatch does not honor the order of patterns
2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
` (2 preceding siblings ...)
2015-08-31 3:22 ` pinskia at gcc dot gnu.org
@ 2015-08-31 8:43 ` rguenth at gcc dot gnu.org
2015-08-31 14:00 ` rguenth at gcc dot gnu.org
2015-08-31 14:02 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-08-31 8:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
The related bug is PR64084 btw.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/67381] genmatch does not honor the order of patterns
2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
` (3 preceding siblings ...)
2015-08-31 8:43 ` rguenth at gcc dot gnu.org
@ 2015-08-31 14:00 ` rguenth at gcc dot gnu.org
2015-08-31 14:02 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-08-31 14:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Aug 31 14:00:16 2015
New Revision: 227344
URL: https://gcc.gnu.org/viewcvs?rev=227344&root=gcc&view=rev
Log:
2015-08-31 Richard Biener <rguenther@suse.de>
PR middle-end/67381
* genmatch.c (dt_node::gen_kids): Also treat matches as barrier.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/genmatch.c
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/67381] genmatch does not honor the order of patterns
2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
` (4 preceding siblings ...)
2015-08-31 14:00 ` rguenth at gcc dot gnu.org
@ 2015-08-31 14:02 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-08-31 14:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67381
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2015-08-31 14:02 UTC | newest]
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2015-08-28 11:59 [Bug tree-optimization/67381] New: genmatch does not honor the order of patterns glisse at gcc dot gnu.org
2015-08-28 13:09 ` [Bug tree-optimization/67381] " rguenth at gcc dot gnu.org
2015-08-28 23:10 ` pinskia at gcc dot gnu.org
2015-08-31 3:22 ` pinskia at gcc dot gnu.org
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