| /* { dg-do compile } */ |
| /* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops-details -fdump-tree-final_cleanup" } */ |
| |
| #include <stdarg.h> |
| #include <stdlib.h> |
| |
| #define N 16 |
| |
| unsigned int ub[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45}; |
| unsigned int uc[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}; |
| |
| /* Reduction of unsigned-int. */ |
| |
| __attribute__ ((noinline)) |
| int main1 (int n, int res) |
| { |
| int i; |
| unsigned int udiff; |
| |
| udiff = 0; |
| for (i = 0; i < n; i++) { |
| udiff += (ub[i] - uc[i]); |
| } |
| |
| /* check results: */ |
| if (udiff != res) |
| abort (); |
| |
| return 0; |
| } |
| |
| int main (void) |
| { |
| main1 (N, 240); |
| main1 (N-1, 210); |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "Detected reduction" 1 "parloops" } } */ |
| /* { dg-final { scan-tree-dump-times "SUCCESS: may be parallelized" 1 "parloops" } } */ |
| /* { dg-final { cleanup-tree-dump "parloops" } } */ |
| /* { dg-final { cleanup-tree-dump "final_cleanup" } } */ |
| |
