Viewing file:  store_merging_18.c (1.22 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* PR tree-optimization/83843 */
/* { dg-do run } */
/* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-store-merging" } */
/* { dg-final { scan-tree-dump-times "Merging successful" 3 "store-merging" { target { store_merge && { ! arm*-*-* } } } } } */
__attribute__((noipa)) void
foo (unsigned char *buf, unsigned char *tab)
{
unsigned v = tab[1] ^ (tab[0] << 8);
buf[0] = ~(v >> 8);
buf[1] = ~v;
}
__attribute__((noipa)) void
bar (unsigned char *buf, unsigned char *tab)
{
unsigned v = tab[1] ^ (tab[0] << 8);
buf[0] = (v >> 8);
buf[1] = ~v;
}
__attribute__((noipa)) void
baz (unsigned char *buf, unsigned char *tab)
{
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];
unsigned char tab[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;
}
|
