https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69173
Bug ID: 69173
Summary: [6 Regression] ICE (segfault) in vinfo_for_stmt
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
trunk r232077, powerpc64le-linux-gnu, works with -O2
reduced test case:
unsigned a;
unsigned *b;
void fn1() {
char c;
while (b < (unsigned *)fn1) {
a += b[2] + c;
b++;
}
}
$ gcc -c -g -O3 woff.i
woff.i: In function 'fn1':
woff.i:3:6: internal compiler error: Segmentation fault
void fn1() {
^~~
0x106c33b3 crash_signal
../../src/gcc/toplev.c:334
0x108e9adc vinfo_for_stmt
../../src/gcc/tree-vectorizer.h:704
0x108e9adc vect_fixup_reduc_chain
../../src/gcc/tree-vect-loop.c:966
0x108e9adc vect_fixup_scalar_cycles_with_patterns
../../src/gcc/tree-vect-loop.c:988
0x108e9adc vect_analyze_loop_2
../../src/gcc/tree-vect-loop.c:1836
0x108e9adc vect_analyze_loop(loop*)
../../src/gcc/tree-vect-loop.c:2251
0x1090002f vectorize_loops()
../../src/gcc/tree-vectorizer.c:532
0x108167eb execute
../../src/gcc/tree-ssa-loop.c:420
Please submit a full bug report,
with preprocessed source if appropriate.
