| /* { dg-do compile } */ |
| /* { dg-options "-O1 -fno-trapping-math -funsafe-math-optimizations -fdump-tree-recip" } */ |
| |
| /* The recip pass has a threshold of 3 reciprocal operations before it attempts |
| to optimize a sequence. With a FP enabled ranger, we eliminate one of them |
| earlier, causing the pass to skip this optimization. */ |
| /* { dg-additional-options "-fno-thread-jumps -fno-tree-dominator-opts" } */ |
| |
| double F[5] = { 0.0, 0.0 }, e; |
| |
| /* In this case the optimization is interesting. */ |
| float h () |
| { |
| int i; |
| double E, W, P, d; |
| |
| W = 1.1; |
| d = 2.*e; |
| E = 1. - d; |
| |
| for( i=0; i < 5; i++ ) |
| if( d > 0.01 ) |
| { |
| P = ( W < E ) ? (W - E)/d : (E - W)/d; |
| F[i] += P; |
| } |
| |
| F[0] += E / d; |
| } |
| |
| /* { dg-final { scan-tree-dump-times " / " 1 "recip" } } */ |
