https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101512
Bug ID: 101512
Summary: [11/12 Regression] ICE in
maybe_trim_constructor_store, at tree-ssa-dse.c:379
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Changed between 20200503 and 20200510 :
$ cat z1.c
int n();
typedef unsigned long V __attribute__ ((vector_size (64)));
V
foo (int i, V v)
{
i = ((V)(V){n()})[n()];
return v + i;
}
$ gcc-11-20200503 -c z1.c -O2 -mavx512f
$
$ gcc-12-20210718 -c z1.c -O2 -mavx512f
during GIMPLE pass: dse
z1.c: In function 'foo':
z1.c:8:1: internal compiler error: in maybe_trim_constructor_store, at
tree-ssa-dse.c:379
8 | }
| ^
0xcf24be maybe_trim_constructor_store
../../gcc/tree-ssa-dse.c:379
0xcf24be maybe_trim_partially_dead_store
../../gcc/tree-ssa-dse.c:605
0xcf24be dse_optimize_stmt
../../gcc/tree-ssa-dse.c:1146
0xcf24be execute
../../gcc/tree-ssa-dse.c:1237
