https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106963
Bug ID: 106963
Summary: [13 Regression] ICE in vect_gen_perm_mask_checked, at
tree-vect-stmts.cc:8606
Product: gcc
Version: 13.0
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
CC: liuhongt at gcc dot gnu.org
Target Milestone: ---
Target: x86_64-unknown-linux-gnu
gcc 13.0.0 20220911 snapshot (g:0ea5e3f4542832b8da016b152695e64a2a386309) ICEs
when compiling the following testcase, reduced from
gcc/testsuite/gcc.target/i386/pr103144-neg-1.c, w/ -mavx -O2:
void
foo_neg_const (int *a)
{
int i, b = 1;
for (i = 0; i < 1000; i++)
{
a[i] = b;
b = -b;
}
}
% x86_64-unknown-linux-gnu-gcc-13.0.0 -mavx -O2 -c l9k774zu.c
during GIMPLE pass: vect
l9k774zu.c: In function 'foo_neg_const':
l9k774zu.c:2:1: internal compiler error: in vect_gen_perm_mask_checked, at
tree-vect-stmts.cc:8606
2 | foo_neg_const (int *a)
| ^~~~~~~~~~~~~
0x86e97b vect_gen_perm_mask_checked(tree_node*, vec_perm_indices const&)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vect-stmts.cc:8606
0x1177c4b vect_create_nonlinear_iv_init
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vect-loop.cc:8360
0x1177c4b vectorizable_nonlinear_induction
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vect-loop.cc:8803
0x1179a67 vectorizable_induction(_loop_vec_info*, _stmt_vec_info*, gimple**,
_slp_tree*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vect-loop.cc:8943
0x1ef3690 vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vect-stmts.cc:11319
0x1186e81 vect_transform_loop(_loop_vec_info*, gimple*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vect-loop.cc:10643
0x11c99c1 vect_transform_loops
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vectorizer.cc:1007
0x11c9fff try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vectorizer.cc:1153
0x11c9fff try_vectorize_loop
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vectorizer.cc:1183
0x11ca3b4 execute
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-vectorizer.cc:1299
