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[Bug tree-optimization/60740] New: ICE in extract_affine w/ -O2 -ftree-loop-linear
- From: "asolokha at gmx dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 02 Apr 2014 11:22:02 +0000
- Subject: [Bug tree-optimization/60740] New: ICE in extract_affine w/ -O2 -ftree-loop-linear
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60740
Bug ID: 60740
Summary: ICE in extract_affine w/ -O2 -ftree-loop-linear
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
At least gcc 4.8.2 and and 4.9.0-alpha20140330 fail to compile the following
code snippet w/ -O2 -ftree-loop-linear on x86_64-pc-linux-gnu:
int **db6 = 0;
void
k26(void)
{
static int geb = 0;
int *a22 = &geb;
int **l30 = &a22;
int *c4b;
int ndf;
for (ndf = 0; ndf <= 1; ++ndf)
*c4b = (db6 == l30) && (*a22)--;
}
% gcc-4.9.0-alpha20140330 -c -O2 -ftree-loop-linear testcase.c
crash1.c: In function 'k26':
crash1.c:4:1: internal compiler error: in extract_affine, at
graphite-sese-to-poly.c:846
k26(void)
^
% gcc-4.8.2 -c -O2 -ftree-loop-linear testcase.c
crash1.c: In function 'k26':
crash1.c:4:1: internal compiler error: in extract_affine, at
graphite-sese-to-poly.c:827
k26(void)
^
% gcc-4.7.3 -c -O2 -ftree-loop-linear testcase.c
% echo $?
I failed to reduce the testcase any further.