1 /* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
2 /* { dg-options "-O1 -fprefetch-loop-arrays -march=amdfam10 -fdump-tree-aprefetch-blocks" } */
3
4 int a[10000];
5
foo(unsigned n)6 int foo(unsigned n)
7 {
8 unsigned i, s = 0;
9
10 for (i = 0; i < n; i++)
11 s += a[i];
12
13 return s;
14 }
15
16 /* We used to make the probability that the body of the loop (unrolled
17 to enable prefetching) is entered 0, which is not correct. */
18
19 /* { dg-final { scan-tree-dump-not "Invalid sum" "aprefetch"} } */
20 /* { dg-final { scan-tree-dump-not "SUCC: 7 .100.0%" "aprefetch"} } */
21