Viewing file:  store_merging_11.c (1.08 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 b[2]; unsigned short c; unsigned char d[4]; unsigned long e; };
__attribute__((noipa)) void
foo (struct S *p)
{
p->b[1] = 1;
p->c = 23;
p->d[0] = 4;
p->d[1] = 5;
p->d[2] = 6;
p->d[3] = 7;
p->e = 8;
}
__attribute__((noipa)) void
bar (struct S *p)
{
p->b[1] = 9;
p->c = 112;
p->d[0] = 10;
p->d[1] = 11;
}
struct S s = { { 30, 31 }, 32, { 33, 34, 35, 36 }, 37 };
int
main ()
{
asm volatile ("" : : : "memory");
foo (&s);
asm volatile ("" : : : "memory");
if (s.b[0] != 30 || s.b[1] != 1 || s.c != 23 || s.d[0] != 4 || s.d[1] != 5
|| s.d[2] != 6 || s.d[3] != 7 || s.e != 8)
__builtin_abort ();
bar (&s);
asm volatile ("" : : : "memory");
if (s.b[0] != 30 || s.b[1] != 9 || s.c != 112 || s.d[0] != 10 || s.d[1] != 11
|| s.d[2] != 6 || s.d[3] != 7 || s.e != 8)
__builtin_abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "Merging successful" 2 "store-merging" } } */
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