blob: 2c1282d9d8c6ec32854c65ec2cfc73a347b9743f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
/* Prefetching used to prefer nonsensical unroll factor of 5 in this testcase. */
/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
/* { dg-require-effective-target ilp32 } */
/* { dg-options "-O2 -fprefetch-loop-arrays -march=athlon -msse2 -mfpmath=sse -fdump-tree-aprefetch-details" } */
#define N 1000000
double a[N];
double test(void)
{
unsigned i;
double sum = 0;
for (i = 0; i < N; i += 2)
sum += (a[i] * a[i+1]);
return sum;
}
/* { dg-final { scan-tree-dump-times "unroll factor 4" 1 "aprefetch" } } */
/* { dg-final { cleanup-tree-dump "aprefetch" } } */
|
