1 /* { dg-do compile } */
2 /* { dg-require-effective-target non_strict_align } */
3 /* { dg-options "-O2 -fdump-tree-store-merging-details" } */
4
5 /* Make sure stores to volatile addresses don't get combined with
6 other accesses. */
7
8 struct bar
9 {
10 int a;
11 char b;
12 char c;
13 volatile short d;
14 char e;
15 char f;
16 char g;
17 };
18
19 void
foozero(struct bar * p)20 foozero (struct bar *p)
21 {
22 p->b = 0xa;
23 p->a = 0xb;
24 p->c = 0xc;
25 p->d = 0;
26 p->e = 0xd;
27 p->f = 0xe;
28 p->g = 0xf;
29 }
30
31 /* { dg-final { scan-tree-dump "Volatile access terminates all chains" "store-merging" } } */
32 /* { dg-final { scan-tree-dump-times "=\{v\} 0;" 1 "store-merging" } } */
33