| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fno-tree-loop-vectorize -ftree-parallelize-loops=4 -fdump-tree-parloops-details -fdump-tree-optimized" } */ |
| |
| void abort (void); |
| |
| int g_sum=0; |
| int x[500][500]; |
| |
| __attribute__((noinline)) |
| void parloop (int N) |
| { |
| int i, j; |
| int sum; |
| |
| /* Double reduction is currently not supported, outer loop is not |
| parallelized. Inner reduction is detected, inner loop is |
| parallelized. */ |
| sum = 0; |
| for (i = 0; i < N; i++) |
| for (j = 0; j < N; j++) |
| sum += x[i][j]; |
| |
| g_sum = sum; |
| } |
| |
| int main(void) |
| { |
| parloop(500); |
| |
| return 0; |
| } |
| |
| |
| /* { dg-final { scan-tree-dump-times "parallelizing outer loop" 1 "parloops" { xfail *-*-* } } } */ |
| /* { dg-final { scan-tree-dump-times "loopfn" 5 "optimized" } } */ |
| /* { dg-final { cleanup-tree-dump "parloops" } } */ |
| /* { dg-final { cleanup-tree-dump "optimized" } } */ |