https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93820
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[9/10 Regression] wrong |[9/10 Regression] wrong
|code at -O3 on |code at -O3 on
|x86_64-linux-gnu |x86_64-linux-gnu since
| |r9-1732
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So one can turn it into:
/* PR tree-optimization/93820 */
/* { dg-do run } */
/* { dg-options "-O2 -fno-tree-dse" } */
typedef int v4si __attribute__((vector_size(4 * sizeof (int))));
int a[10];
__attribute__((noipa)) int
foo (int *p)
{
a[6] = *p;
a[4] = 1;
*(((v4si *)&a[0]) + 1) = (v4si) { 0, 0, 0, 0 };
a[3] = 0;
}
int
main ()
{
int i = 0;
foo (&i);
for (i = 0; i < 10; i++)
if (a[i])
__builtin_abort ();
return 0;
}
which started to be miscompiled with
r9-1732-ga7fe6482214cb17e37b1099b2e0e7b2a6babdc47
Thus, I'll have a look.
