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[Bug tree-optimization/54942] New: [4.8 Regression] ICE: OOM with -O3 -fno-cse-follow-jumps -funroll-loops
- From: "zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 17 Oct 2012 04:46:15 +0000
- Subject: [Bug tree-optimization/54942] New: [4.8 Regression] ICE: OOM with -O3 -fno-cse-follow-jumps -funroll-loops
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54942
Bug #: 54942
Summary: [4.8 Regression] ICE: OOM with -O3
-fno-cse-follow-jumps -funroll-loops
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Created attachment 28459
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28459
reduced testcase
Compiler output:
$ gcc -O3 -fno-cse-follow-jumps -funroll-loops testcase.c
cc1: out of memory allocating 17179869180 bytes after a total of 733184 bytes
The original testcase didn't have uninitialised variables... I can provide it
if needed.
Tested revisions:
r192509 - fail
r191586 - OK
4.7 r191640 - OK