1 /* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
2 /* { dg-options "-O2 -fno-tree-loop-distribute-patterns -fprefetch-loop-arrays -march=amdfam10 --param simultaneous-prefetches=100 -fdump-tree-aprefetch-details -fdump-tree-optimized" } */
3
4 #define K 1000000
5 int a[K];
6
test()7 void test()
8 {
9 unsigned i;
10
11 /* Nontemporal store should be used for a. */
12 for (i = 0; i < K; i++)
13 a[i] = 0;
14 }
15
16 /* { dg-final { scan-tree-dump-times "a nontemporal store" 1 "aprefetch" } } */
17
18 /* { dg-final { scan-tree-dump "=\\{nt\\}" "optimized" } } */
19 /* { dg-final { scan-tree-dump-times "__builtin_ia32_mfence" 1 "optimized" } } */
20