| /* { dg-do compile } */ |
| /* { dg-options "-O2 -ftree-vectorize -fdump-tree-vect-details" } */ |
| |
| /* Strict FP reductions shouldn't be used for the outer loop, only the |
| inner loop. */ |
| |
| float |
| double_reduc (float (*i)[16]) |
| { |
| float l = 0; |
| |
| #pragma GCC unroll 0 |
| for (int a = 0; a < 8; a++) |
| for (int b = 0; b < 100; b++) |
| l += i[b][a]; |
| return l; |
| } |
| |
| /* { dg-final { scan-assembler-times {\tfadda\ts[0-9]+, p[0-7], s[0-9]+, z[0-9]+\.s\n} 1 } } */ |
| /* { dg-final { scan-tree-dump "Detected double reduction" "vect" } } */ |
| /* { dg-final { scan-tree-dump-not "OUTER LOOP VECTORIZED" "vect" } } */ |
