https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92345
Bug ID: 92345
Summary: [10 Regression] ICE in vec<_stmt_vec_info*, va_heap,
vl_embed>::space (vect_get_and_check_slp_defs)
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-alpha20191103 snapshot (r277758) ICEs when compiling the following
testcase w/ -O1 -ftree-loop-vectorize:
long int x1;
int fr;
int
us (int sk, int jx)
{
while (sk < 1)
{
jx *= 2;
fr += x1 + 1;
++sk;
}
return jx;
}
% gcc-10.0.0-alpha20191103 -O1 -ftree-loop-vectorize -c b422bdcb.c
during GIMPLE pass: vect
b422bdcb.c: In function 'us':
b422bdcb.c:5:1: internal compiler error: Segmentation fault
5 | us (int sk, int jx)
| ^~
0xc78c56 crash_signal
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/toplev.c:326
0xea2eef vec<_stmt_vec_info*, va_heap, vl_embed>::space(unsigned int) const
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/vec.h:885
0xea2eef vec<_stmt_vec_info*, va_heap, vl_embed>::quick_push(_stmt_vec_info*
const&)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/vec.h:990
0xea2eef vec<_stmt_vec_info*, va_heap, vl_ptr>::quick_push(_stmt_vec_info*
const&)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/vec.h:1786
0xea2eef vect_get_and_check_slp_defs
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-slp.c:524
0xea2eef vect_build_slp_tree_2
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-slp.c:1264
0xea2147 vect_build_slp_tree
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-slp.c:1151
0xea747c vect_analyze_slp_instance
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-slp.c:2071
0xea8be2 vect_analyze_slp(vec_info*, unsigned int)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-slp.c:2330
0xe91303 vect_analyze_loop_2
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-loop.c:2017
0xe91303 vect_analyze_loop(loop*, _loop_vec_info*, vec_info_shared*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vect-loop.c:2413
0xeadd43 try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vectorizer.c:893
0xeae6ed vectorize_loops()
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191103/work/gcc-10-20191103/gcc/tree-vectorizer.c:1127
