https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83940
Bug ID: 83940
Summary: [8 Regression] ICE in vect_get_vec_def_for_stmt_copy,
at tree-vect-stmts.c:1531
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rsandifo at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-linux-gnu
Starting from r256643 we ICE on:
$ cat pr.c
double **a;
int b;
void c ()
{
for (; b; b++)
a[b][b] = 1.0;
}
$ gcc pr.c -mavx512vnni -Ofast
during GIMPLE pass: vect
pr.c: In function ‘c’:
pr.c:3:6: internal compiler error: in vect_get_vec_def_for_stmt_copy, at
tree-vect-stmts.c:1531
void c ()
^
0xe293cf vect_get_vec_def_for_stmt_copy(vect_def_type, tree_node*)
.././../gcc/tree-vect-stmts.c:1531
0xe38d58 vectorizable_store
.././../gcc/tree-vect-stmts.c:6359
0xe476ac vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
.././../gcc/tree-vect-stmts.c:9470
0xe55e67 vect_transform_loop(_loop_vec_info*)
.././../gcc/tree-vect-loop.c:8842
0xe74cd3 vectorize_loops()
.././../gcc/tree-vectorizer.c:740
Options:
/home/marxin/BIG/buildbot/slave/install/gcc-87413c363b2dc87c08db06655fc60622176ed9b1/bin/../libexec/gcc/x86_64-pc-linux-gnu/8.0.1/cc1
-fpreprocessed pr.i -quiet -dumpbase pr.c -mavx512vnni -mtune=generic
-march=x86-64 -auxbase pr -Ofast -version -o pr.s
