| /* Prefetching used to prefer nonsensical unroll factor of 5 in this testcase. */ | |
| /* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */ | |
| /* { dg-options "-O2 -fno-tree-vectorize -fprefetch-loop-arrays -march=amdfam10 -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" } } */ |