https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92252
Bug ID: 92252
Summary: [10 Regression] ICE: Segmentation fault (in
vect_stmt_to_vectorize)
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-10.0.0-alpha20191027 snapshot (r277495) ICEs when compiling the following
testcase w/ -O3:
long int ar;
int dt;
long int
pc (unsigned long int q3, int zw)
{
long int em = 0;
while (zw < 1)
{
q3 = zw * 2ul;
if (q3 != 0)
for (ar = 0; ar < 2; ++ar)
em = dt;
++zw;
}
return em;
}
% gcc-10.0.0-alpha20191027 -O3 -c fjubgloo.c
during GIMPLE pass: vect
fjubgloo.c: In function 'pc':
fjubgloo.c:5:1: internal compiler error: Segmentation fault
5 | pc (unsigned long int q3, int zw)
| ^~
0xc71516 crash_signal
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/toplev.c:326
0xe84700 vect_stmt_to_vectorize(_stmt_vec_info*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vectorizer.h:1258
0xe84700 vectorizable_reduction(_stmt_vec_info*, _slp_tree*, _slp_instance*,
vec<stmt_info_for_cost, va_heap, vl_ptr>*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vect-loop.c:5729
0xe8bed9 vect_analyze_loop_operations
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vect-loop.c:1560
0xe8bed9 vect_analyze_loop_2
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vect-loop.c:2079
0xe8bed9 vect_analyze_loop(loop*, _loop_vec_info*, vec_info_shared*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vect-loop.c:2367
0xea47d4 try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vectorizer.c:886
0xea55f4 vectorize_loops()
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-vectorizer.c:1114
