https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92162
Bug ID: 92162
Summary: [10 Regression] ICE in
vect_create_epilog_for_reduction, at
tree-vect-loop.c:4252
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: ---
Target: x86_64-pc-linux-gnu
gcc-10.0.0-alpha20191020 snapshot (r277217) ICEs when compiling the following
testcase w/ -Ofast:
short int s8;
void __attribute__ ((simd))
gn (void)
{
s8 = 0;
}
% x86_64-pc-linux-gnu-gcc-10.0.0-alpha20191020 -Ofast -c ezsapdyo.c
during GIMPLE pass: vect
ezsapdyo.c: In function 'gn.simdclone.5':
ezsapdyo.c:4:1: internal compiler error: in vect_create_epilog_for_reduction,
at tree-vect-loop.c:4252
4 | gn (void)
| ^~
0x6b96a3 vect_create_epilog_for_reduction
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-loop.c:4252
0x6b96a3 vectorizable_live_operation(_stmt_vec_info*, gimple_stmt_iterator*,
_slp_tree*, _slp_instance*, int, bool, vec<stmt_info_for_cost, va_heap,
vl_ptr>*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-loop.c:7477
0xe5cb69 can_vectorize_live_stmts
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-stmts.c:10578
0xe5cb69 can_vectorize_live_stmts
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-stmts.c:10559
0xe7cbcc vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*,
_slp_tree*, _slp_instance*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-stmts.c:11030
0xe7f3f8 vect_transform_loop_stmt
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-loop.c:7918
0xe88b10 vect_transform_loop(_loop_vec_info*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vect-loop.c:8132
0xeaac51 try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vectorizer.c:982
0xeab82d vectorize_loops()
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191020/work/gcc-10-20191020/gcc/tree-vectorizer.c:1114
