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* [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
@ 2013-01-26 14:08 zsojka at seznam dot cz
2013-01-26 15:20 ` [Bug rtl-optimization/56117] " rguenth at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: zsojka at seznam dot cz @ 2013-01-26 14:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
Bug #: 56117
Summary: [4.8 Regression] ICE: in cselib_subst_to_values, at
cselib.c:1853 with -O2 -fsched2-use-superblocks and
__builtin_prefetch()
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Created attachment 29278
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29278
reduced testcase
Compiler output:
$ gcc -O2 -fsched2-use-superblocks testcase.c
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in cselib_subst_to_values, at
cselib.c:1853
}
^
0x6d6874 cselib_subst_to_values(rtx_def*, machine_mode)
/mnt/svn/gcc-trunk/gcc/cselib.c:1853
0x6d6cf9 cselib_subst_to_values_from_insn(rtx_def*, machine_mode, rtx_def*)
/mnt/svn/gcc-trunk/gcc/cselib.c:1945
0x1149dbf add_insn_mem_dependence
/mnt/svn/gcc-trunk/gcc/sched-deps.c:1739
0x1150266 sched_analyze_2
/mnt/svn/gcc-trunk/gcc/sched-deps.c:2724
0x11510ee sched_analyze_insn
/mnt/svn/gcc-trunk/gcc/sched-deps.c:2899
0x1153b09 deps_analyze_insn(deps_desc*, rtx_def*)
/mnt/svn/gcc-trunk/gcc/sched-deps.c:3583
0x1154815 sched_analyze(deps_desc*, rtx_def*, rtx_def*)
/mnt/svn/gcc-trunk/gcc/sched-deps.c:3732
0x11583ea schedule_ebb(rtx_def*, rtx_def*, bool)
/mnt/svn/gcc-trunk/gcc/sched-ebb.c:514
0x1158e35 schedule_ebbs()
/mnt/svn/gcc-trunk/gcc/sched-ebb.c:664
0x9cb7f4 rest_of_handle_sched2
/mnt/svn/gcc-trunk/gcc/sched-rgn.c:3606
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.
Tested revisions:
r195477 - crash
r195313 - crash
r192654 - OK
4.7 r194763 - OK
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
2013-01-26 14:08 [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch() zsojka at seznam dot cz
@ 2013-01-26 15:20 ` rguenth at gcc dot gnu.org
2013-01-28 8:45 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-01-26 15:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
Richard Biener <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 rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
2013-01-26 14:08 [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch() zsojka at seznam dot cz
2013-01-26 15:20 ` [Bug rtl-optimization/56117] " rguenth at gcc dot gnu.org
@ 2013-01-28 8:45 ` jakub at gcc dot gnu.org
2013-01-28 8:52 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-01-28 8:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2013-01-28
CC| |jakub at gcc dot gnu.org,
| |vmakarov at gcc dot gnu.org
AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org
|gnu.org |
Ever Confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-28 08:44:33 UTC ---
As expected, regressed with the
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195211
change.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
2013-01-26 14:08 [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch() zsojka at seznam dot cz
2013-01-26 15:20 ` [Bug rtl-optimization/56117] " rguenth at gcc dot gnu.org
2013-01-28 8:45 ` jakub at gcc dot gnu.org
@ 2013-01-28 8:52 ` jakub at gcc dot gnu.org
2013-01-28 16:51 ` jakub at gcc dot gnu.org
2013-01-28 16:52 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-01-28 8:52 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-28 08:51:39 UTC ---
Created attachment 29289
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29289
gcc48-pr56117.patch
Untested fix. For MEMs, sched-deps.c is calling cselib_lookup_from_insn, but
for PREFETCH it wasn't doing that. As this is before cselib_process_insn is
called, some REGs mentioned in the pattern might be never looked up yet at that
point.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
2013-01-26 14:08 [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch() zsojka at seznam dot cz
` (2 preceding siblings ...)
2013-01-28 8:52 ` jakub at gcc dot gnu.org
@ 2013-01-28 16:51 ` jakub at gcc dot gnu.org
2013-01-28 16:52 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-01-28 16:51 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-28 16:50:39 UTC ---
Author: jakub
Date: Mon Jan 28 16:50:22 2013
New Revision: 195513
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195513
Log:
PR rtl-optimization/56117
* sched-deps.c (sched_analyze_2) <case PREFETCH>: For use_cselib
call cselib_lookup_from_insn on the MEM before calling
add_insn_mem_dependence.
* gcc.dg/pr56117.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr56117.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sched-deps.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()
2013-01-26 14:08 [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch() zsojka at seznam dot cz
` (3 preceding siblings ...)
2013-01-28 16:51 ` jakub at gcc dot gnu.org
@ 2013-01-28 16:52 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-01-28 16:52 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-28 16:52:26 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-01-26 14:08 [Bug rtl-optimization/56117] New: [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch() zsojka at seznam dot cz
2013-01-26 15:20 ` [Bug rtl-optimization/56117] " rguenth at gcc dot gnu.org
2013-01-28 8:45 ` jakub at gcc dot gnu.org
2013-01-28 8:52 ` jakub at gcc dot gnu.org
2013-01-28 16:51 ` jakub at gcc dot gnu.org
2013-01-28 16:52 ` jakub at gcc dot gnu.org
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