| /* { dg-do compile } */ |
| /* { dg-options "-O -g -fdump-tree-backprop-details" } */ |
| |
| /* Test a loop that does both a multiplication and addition. The addition |
| should prevent any sign ops from being removed. */ |
| #define TEST_FUNCTION(TYPE, SUFFIX) \ |
| TYPE \ |
| test##SUFFIX (TYPE x, TYPE y, TYPE *array, int n) \ |
| { \ |
| x = __builtin_copysign##SUFFIX (x, y); \ |
| for (int i = 0; i < n; ++i) \ |
| x = (x + 1) * array[i]; \ |
| return __builtin_hypot##SUFFIX (x, y); \ |
| } |
| |
| TEST_FUNCTION (float, f) |
| TEST_FUNCTION (double, ) |
| TEST_FUNCTION (long double, l) |
| |
| /* { dg-final { scan-tree-dump-times {Deleting[^\n]* = __builtin_copysign} 0 "backprop" } } */ |
