| /* { dg-do compile } */ |
| /* { dg-options "-O1 -fdump-tree-fre1 -fdump-tree-optimized" } */ |
| /* part of PR tree-optimization/108397 */ |
| |
| long long |
| foo (unsigned char o) |
| { |
| unsigned long long t1 = -(long long) (o == 0); |
| unsigned long long t2 = -(long long) (t1 != 0); |
| unsigned long long t3 = -(long long) (t1 <= t2); |
| return t3; |
| } |
| |
| /* Should be able to optimize this down to just `return -1;` during fre1. */ |
| /* { dg-final { scan-tree-dump "return -1;" "fre1" } } */ |
| /* FRE does not remove all dead statements so a few negate expressions are left behind. */ |
| /* { dg-final { scan-tree-dump-not " -\[^1\]" "fre1" { xfail *-*-* } } } */ |
| |
| /* { dg-final { scan-tree-dump "return -1;" "optimized" } } */ |
| /* { dg-final { scan-tree-dump-not " - " "optimized" } } */ |
