| /* { dg-do compile } */ |
| /* { dg-options "-Os -fdump-tree-optimized" } */ |
| /* PR tree-optimization/110768 */ |
| /* The call to foo should be able to removed, |
| The branch to unreachable is unreachable as |
| VRP (ranger) figure out that c there can only |
| be -20409 or 0. before r14-5109-ga291237b628f41 |
| ranger could not figure that out. */ |
| |
| |
| void foo(void); |
| static int a, b; |
| int main() { |
| { |
| short c = 45127; |
| signed char d; |
| b = 0; |
| for (; b <= 3; b++) { |
| if (b) continue; |
| d = 0; |
| for (; d <= 100; d++) { |
| if (!(((c) >= -20409) && ((c) <= 1))) { |
| __builtin_unreachable(); |
| } |
| if (~(0 == a) & 1) return b; |
| c = 0; |
| for (; c <= 0; c++) a = 3; |
| } |
| } |
| foo(); |
| } |
| } |
| |
| /* { dg-final { scan-tree-dump-not "foo " "optimized" } } */ |
