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* [Bug rtl-optimization/64316] New: [5 Regression] ICE in simplify_const_unary_operation after r218503
@ 2014-12-15 14:42 izamyatin at gmail dot com
2014-12-15 15:07 ` [Bug rtl-optimization/64316] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: izamyatin at gmail dot com @ 2014-12-15 14:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64316
Bug ID: 64316
Summary: [5 Regression] ICE in simplify_const_unary_operation
after r218503
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: izamyatin at gmail dot com
Target: x86
Created attachment 34284
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34284&action=edit
Reproducer
For the attached reproducer compiled with -O3 -march=core-avx2 there is:
internal compiler error: in simplify_const_unary_operation, at
simplify-rtx.c:1676
}
^
0xbd8b9b simplify_const_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
../../gcc/simplify-rtx.c:1676
0xbd6045 simplify_unary_operation(rtx_code, machine_mode, rtx_def*,
machine_mode)
../../gcc/simplify-rtx.c:822
0xbd4f75 simplify_gen_unary(rtx_code, machine_mode, rtx_def*, machine_mode)
../../gcc/simplify-rtx.c:395
0x136761f if_then_else_cond
../../gcc/combine.c:8748
0x135e155 combine_simplify_rtx
../../gcc/combine.c:5394
0x135dea3 subst
../../gcc/combine.c:5331
0x135dca2 subst
../../gcc/combine.c:5276
0x135dca2 subst
../../gcc/combine.c:5276
0x1357a53 try_combine
../../gcc/combine.c:3250
0x1352ba8 combine_instructions
../../gcc/combine.c:1301
0x13740c3 rest_of_handle_combine
../../gcc/combine.c:14052
0x137416a execute
../../gcc/combine.c:14095
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
This actually leads to miscompilation of spec2006/403.gcc with -march=core-avx2
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/64316] [5 Regression] ICE in simplify_const_unary_operation after r218503
2014-12-15 14:42 [Bug rtl-optimization/64316] New: [5 Regression] ICE in simplify_const_unary_operation after r218503 izamyatin at gmail dot com
@ 2014-12-15 15:07 ` rguenth at gcc dot gnu.org
2014-12-15 15:29 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-12-15 15:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64316
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |5.0
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/64316] [5 Regression] ICE in simplify_const_unary_operation after r218503
2014-12-15 14:42 [Bug rtl-optimization/64316] New: [5 Regression] ICE in simplify_const_unary_operation after r218503 izamyatin at gmail dot com
2014-12-15 15:07 ` [Bug rtl-optimization/64316] " rguenth at gcc dot gnu.org
@ 2014-12-15 15:29 ` jakub at gcc dot gnu.org
2014-12-15 15:51 ` jakub at gcc dot gnu.org
2014-12-15 20:11 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-12-15 15:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64316
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-12-15
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r218503.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/64316] [5 Regression] ICE in simplify_const_unary_operation after r218503
2014-12-15 14:42 [Bug rtl-optimization/64316] New: [5 Regression] ICE in simplify_const_unary_operation after r218503 izamyatin at gmail dot com
2014-12-15 15:07 ` [Bug rtl-optimization/64316] " rguenth at gcc dot gnu.org
2014-12-15 15:29 ` jakub at gcc dot gnu.org
@ 2014-12-15 15:51 ` jakub at gcc dot gnu.org
2014-12-15 20:11 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-12-15 15:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64316
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 34286
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34286&action=edit
gcc5-pr64316.patch
Untested fix.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/64316] [5 Regression] ICE in simplify_const_unary_operation after r218503
2014-12-15 14:42 [Bug rtl-optimization/64316] New: [5 Regression] ICE in simplify_const_unary_operation after r218503 izamyatin at gmail dot com
` (2 preceding siblings ...)
2014-12-15 15:51 ` jakub at gcc dot gnu.org
@ 2014-12-15 20:11 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-12-15 20:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64316
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Dec 15 20:10:45 2014
New Revision: 218762
URL: https://gcc.gnu.org/viewcvs?rev=218762&root=gcc&view=rev
Log:
PR rtl-optimization/64316
* simplify-rtx.c (simplify_relational_operation_1): For
(eq/ne (and x y) x) and (eq/ne (and x y) y) optimizations use
CONST0_RTX instead of const0_rtx.
* gcc.dg/pr64316.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr64316.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/simplify-rtx.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 5+ messages in thread
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2014-12-15 14:42 [Bug rtl-optimization/64316] New: [5 Regression] ICE in simplify_const_unary_operation after r218503 izamyatin at gmail dot com
2014-12-15 15:07 ` [Bug rtl-optimization/64316] " rguenth at gcc dot gnu.org
2014-12-15 15:29 ` jakub at gcc dot gnu.org
2014-12-15 15:51 ` jakub at gcc dot gnu.org
2014-12-15 20:11 ` jakub at gcc dot gnu.org
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