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/* PR tree-optimization/83843 */
/* { dg-do run } */
/* { dg-options "-O2 -fdump-tree-store-merging" } */
/* { dg-final { scan-tree-dump-times "Merging successful" 3 "store-merging" { target store_merge } } } */
__attribute__((noipa)) void
foo (unsigned char *buf, unsigned char *tab)
{
tab = __builtin_assume_aligned (tab, 2);
buf = __builtin_assume_aligned (buf, 2);
unsigned v = tab[1] ^ (tab[0] << 8);
buf[0] = ~(v >> 8);
buf[1] = ~v;
}
__attribute__((noipa)) void
bar (unsigned char *buf, unsigned char *tab)
{
tab = __builtin_assume_aligned (tab, 2);
buf = __builtin_assume_aligned (buf, 2);
unsigned v = tab[1] ^ (tab[0] << 8);
buf[0] = (v >> 8);
buf[1] = ~v;
}
__attribute__((noipa)) void
baz (unsigned char *buf, unsigned char *tab)
{
tab = __builtin_assume_aligned (tab, 2);
buf = __builtin_assume_aligned (buf, 2);
unsigned v = tab[1] ^ (tab[0] << 8);
buf[0] = ~(v >> 8);
buf[1] = v;
}
int
main ()
{
volatile unsigned char l1 = 0;
volatile unsigned char l2 = 1;
unsigned char buf[2] __attribute__((aligned (2)));
unsigned char tab[2] __attribute__((aligned (2))) = { l1 + 1, l2 * 2 };
foo (buf, tab);
if (buf[0] != (unsigned char) ~1 || buf[1] != (unsigned char) ~2)
__builtin_abort ();
buf[0] = l1 + 7;
buf[1] = l2 * 8;
bar (buf, tab);
if (buf[0] != 1 || buf[1] != (unsigned char) ~2)
__builtin_abort ();
buf[0] = l1 + 9;
buf[1] = l2 * 10;
baz (buf, tab);
if (buf[0] != (unsigned char) ~1 || buf[1] != 2)
__builtin_abort ();
return 0;
}
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