| /* PR tree-optimization/94802 */ |
| /* { dg-do run } */ |
| /* { dg-options "-O2 -fdump-tree-optimized" } */ |
| /* { dg-final { scan-tree-dump-not " = __builtin_clz " "optimized" } } */ |
| |
| __attribute__((noipa)) int |
| f1 (int a, int b) |
| { |
| return __builtin_clz (a - b) != 0; |
| } |
| |
| __attribute__((noipa)) int |
| f2 (int x) |
| { |
| return __builtin_clz (x) == 0; |
| } |
| |
| __attribute__((noipa)) int |
| f3 (int x) |
| { |
| return __builtin_clz (x) != 0; |
| } |
| |
| __attribute__((noipa)) int |
| f4 (int a, int b) |
| { |
| return __builtin_clz (a - b) == sizeof (int) * __CHAR_BIT__ - 1; |
| } |
| |
| __attribute__((noipa)) int |
| f5 (int x) |
| { |
| return __builtin_clz (x) == sizeof (int) * __CHAR_BIT__ - 1; |
| } |
| |
| __attribute__((noipa)) int |
| f6 (int x) |
| { |
| return __builtin_clz (x) != sizeof (int) * __CHAR_BIT__ - 1; |
| } |
| |
| int |
| main () |
| { |
| if (f1 (5, 7) != 0 |
| || f1 (7, 5) != 1 |
| || f2 (1) != 0 |
| || f2 (137) != 0 |
| || f2 (-1) != 1 |
| || f2 (-137) != 1 |
| || f3 (1) != 1 |
| || f3 (137) != 1 |
| || f3 (-1) != 0 |
| || f3 (-137) != 0 |
| || f4 (5, 4) != 1 |
| || f4 (6, 4) != 0 |
| || f4 (4, 5) != 0 |
| || f5 (1) != 1 |
| || f5 (17) != 0 |
| || f5 (-1) != 0 |
| || f5 (-17) != 0 |
| || f6 (1) != 0 |
| || f6 (17) != 1 |
| || f6 (-1) != 1 |
| || f6 (-17) != 1) |
| __builtin_abort (); |
| return 0; |
| } |