Viewing file:  store_merging_15.c (1.69 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-require-effective-target store_merge } */
/* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-store-merging" } */
struct S { unsigned char a, b; unsigned short c; unsigned char d, e, f, g; unsigned long long h; };
__attribute__((noipa)) void
f1 (struct S *__restrict p, struct S *__restrict q)
{
p->a = ~q->a;
p->b = q->b;
p->c = ~q->c;
p->d = ~q->d;
p->e = q->e;
p->f = ~q->f;
p->g = ~q->g;
}
__attribute__((noipa)) void
f2 (struct S *__restrict p, struct S *__restrict q)
{
p->a = ~(unsigned char) (p->a & q->a);
p->b = ((unsigned char) ~p->b) & q->b;
p->c = p->c & (unsigned short) ~q->c;
p->d = p->d & q->d;
p->e = p->e & (unsigned char) ~q->e;
p->f = p->f & (unsigned char) ~q->f;
p->g = ~(unsigned char) (p->g & q->g);
}
struct S s = { 20, 21, 22, 23, 24, 25, 26, 27 };
struct S u = { 28, 29, 30, 31, 32, 33, 34, 35 };
struct S v = { 36, 37, 38, 39, 40, 41, 42, 43 };
int
main ()
{
asm volatile ("" : : : "memory");
f1 (&s, &u);
asm volatile ("" : : : "memory");
if (s.a != (unsigned char) ~28 || s.b != 29
|| s.c != (unsigned short) ~30 || s.d != (unsigned char) ~31
|| s.e != 32 || s.f != (unsigned char) ~33 || s.g != (unsigned char) ~34
|| s.h != 27)
__builtin_abort ();
f2 (&u, &v);
asm volatile ("" : : : "memory");
if (u.a != (unsigned char) ~(28 & 36) || u.b != (((unsigned char) ~29) & 37)
|| u.c != (30 & (unsigned short) ~38) || u.d != (31 & 39)
|| u.e != (32 & (unsigned char) ~40) || u.f != (33 & (unsigned char) ~41)
|| u.g != (unsigned char) ~(34 & 42) || u.h != 35)
__builtin_abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "Merging successful" 2 "store-merging" } } */
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