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* [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions
@ 2012-11-10 9:38 zsojka at seznam dot cz
2012-11-10 18:24 ` [Bug middle-end/55263] " mpolacek at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zsojka at seznam dot cz @ 2012-11-10 9:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263
Bug #: 55263
Summary: [4.8 Regression] ICE: pre_and_rev_post_order_compute,
at cfganal.c:875 with -O -fgcse-after-reload
-fnon-call-exceptions
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Created attachment 28654
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28654
autoreduced testcase
The ICE at the same place as PR54385, but that one is FIXED now.
Compiler output:
$ gcc -O -fgcse-after-reload -fnon-call-exceptions testcase.C
testcase.C: In function 'void foo()':
testcase.C:65:1: internal compiler error: in pre_and_rev_post_order_compute, at
cfganal.c:875
}
^
0x827274 pre_and_rev_post_order_compute(int*, int*, bool)
/mnt/svn/gcc-trunk/gcc/cfganal.c:875
0x7e19b9 init_alias_analysis()
/mnt/svn/gcc-trunk/gcc/alias.c:2852
0xaddc9a gcse_after_reload_main
/mnt/svn/gcc-trunk/gcc/postreload-gcse.c:1274
0xaddc9a rest_of_handle_gcse2
/mnt/svn/gcc-trunk/gcc/postreload-gcse.c:1321
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:
r193368 - crash
4.7 r191640 - OK
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/55263] [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions
2012-11-10 9:38 [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions zsojka at seznam dot cz
@ 2012-11-10 18:24 ` mpolacek at gcc dot gnu.org
2012-11-10 23:59 ` steven at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2012-11-10 18:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-11-10
CC| |mpolacek at gcc dot
| |gnu.org, steven at gcc dot
| |gnu.org
Target Milestone|--- |4.8.0
Ever Confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-11-10 18:24:15 UTC ---
Started with http://gcc.gnu.org/viewcvs?view=revision&revision=190602
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/55263] [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions
2012-11-10 9:38 [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions zsojka at seznam dot cz
2012-11-10 18:24 ` [Bug middle-end/55263] " mpolacek at gcc dot gnu.org
@ 2012-11-10 23:59 ` steven at gcc dot gnu.org
2012-11-11 20:29 ` steven at gcc dot gnu.org
2012-11-11 20:33 ` steven at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: steven at gcc dot gnu.org @ 2012-11-10 23:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC|steven at gcc dot gnu.org |
AssignedTo|unassigned at gcc dot |steven at gcc dot gnu.org
|gnu.org |
--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> 2012-11-10 23:59:39 UTC ---
Index: postreload.c
===================================================================
--- postreload.c (revision 193396)
+++ postreload.c (working copy)
@@ -2289,8 +2289,9 @@ rest_of_handle_postreload (void)
reload_cse_regs (get_insns ());
/* Reload_cse_regs can eliminate potentially-trapping MEMs.
Remove any EH edges associated with them. */
- if (cfun->can_throw_non_call_exceptions)
- purge_all_dead_edges ();
+ if (cfun->can_throw_non_call_exceptions
+ && purge_all_dead_edges ())
+ cleanup_cfg (0);
return 0;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/55263] [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions
2012-11-10 9:38 [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions zsojka at seznam dot cz
2012-11-10 18:24 ` [Bug middle-end/55263] " mpolacek at gcc dot gnu.org
2012-11-10 23:59 ` steven at gcc dot gnu.org
@ 2012-11-11 20:29 ` steven at gcc dot gnu.org
2012-11-11 20:33 ` steven at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: steven at gcc dot gnu.org @ 2012-11-11 20:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263
--- Comment #3 from Steven Bosscher <steven at gcc dot gnu.org> 2012-11-11 20:29:15 UTC ---
Author: steven
Date: Sun Nov 11 20:29:11 2012
New Revision: 193412
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193412
Log:
gcc/
PR middle-end/55263
* postreload.c (rest_of_handle_postreload): With non-call exceptions,
if edges are purged call cleanup_cfg to remove unreachable blocks.
testsuite/
PR middle-end/55263
* g++.dg/pr55263.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/pr55263.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/postreload.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/55263] [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions
2012-11-10 9:38 [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions zsojka at seznam dot cz
` (2 preceding siblings ...)
2012-11-11 20:29 ` steven at gcc dot gnu.org
@ 2012-11-11 20:33 ` steven at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: steven at gcc dot gnu.org @ 2012-11-11 20:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Steven Bosscher <steven at gcc dot gnu.org> 2012-11-11 20:33:26 UTC ---
.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2012-11-10 9:38 [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions zsojka at seznam dot cz
2012-11-10 18:24 ` [Bug middle-end/55263] " mpolacek at gcc dot gnu.org
2012-11-10 23:59 ` steven at gcc dot gnu.org
2012-11-11 20:29 ` steven at gcc dot gnu.org
2012-11-11 20:33 ` steven at gcc dot gnu.org
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