| ; This test checks to make sure that 'br X, Dest, Dest' is folded into | |
| ; 'br Dest'. This can only happen after the 'Z' block is eliminated. This is | |
| ; due to the fact that the SimplifyCFG function does not use | |
| ; the ConstantFoldTerminator function. | |
| ; RUN: opt < %s -simplifycfg -S | \ | |
| ; RUN: not grep {br i1 %c2} | |
| declare void @noop() | |
| define i32 @test(i1 %c1, i1 %c2) { | |
| call void @noop( ) | |
| br i1 %c1, label %A, label %Y | |
| A: ; preds = %0 | |
| call void @noop( ) | |
| br i1 %c2, label %Z, label %X | |
| Z: ; preds = %A | |
| br label %X | |
| X: ; preds = %Y, %Z, %A | |
| call void @noop( ) | |
| ret i32 0 | |
| Y: ; preds = %0 | |
| call void @noop( ) | |
| br label %X | |
| } | |