| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fdump-tree-optimized" } */ |
| |
| |
| void bar (void); |
| |
| void |
| foo(unsigned int abc123) |
| { |
| unsigned int xyzpdq = (1 << abc123); |
| if ((xyzpdq & 0x800) != 0) |
| bar(); |
| } |
| |
| void |
| baz(unsigned int abc123) |
| { |
| unsigned int xyzpdq = (1 << abc123); |
| if ((xyzpdq & 0x800) == 0) |
| bar(); |
| } |
| |
| /* What we want to verify is that the bit test against xyzpdq is |
| replaced with a test against abc123 which avoids the shifting |
| and bit ops. */ |
| /* { dg-final { scan-tree-dump-not "xyzpdq" "optimized"} } */ |
| /* { dg-final { scan-tree-dump-times "if .abc123" 2 "optimized"} } */ |
