| /* { dg-do compile } */ |
| /* { dg-options "-Ofast -fdump-tree-optimized-raw" } */ |
| |
| float |
| extract_square (float *a, float *b, float x, float y) |
| { |
| *a = 3 / (y * y); |
| *b = 5 / (y * y); |
| |
| return x / (y * y); |
| } |
| |
| /* Don't expect the 'powmult' (calculation of y * y) |
| to be deleted until a later pass, so look for one |
| more multiplication than strictly necessary. */ |
| float |
| extract_recip (float *a, float *b, float x, float y, float z) |
| { |
| *a = 7 / y; |
| *b = x / (y * y); |
| |
| return z / y; |
| } |
| |
| /* 4 multiplications in 'extract_square', and 4 in 'extract_recip'. */ |
| /* { dg-final { scan-tree-dump-times "mult_expr" 8 "optimized" } } */ |
| |
| /* 1 division in 'extract_square', 1 division in 'extract_recip'. */ |
| /* { dg-final { scan-tree-dump-times "rdiv_expr" 2 "optimized" } } */ |
