; This test checks to make sure that 'br X, Dest, Dest' is folded into | |
; 'br Dest' | |
; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s | |
declare void @noop() | |
; CHECK-NOT: br i1 %c2 | |
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 %X, label %X | |
X: ; preds = %Y, %A, %A | |
call void @noop( ) | |
ret i32 0 | |
Y: ; preds = %0 | |
call void @noop( ) | |
br label %X | |
} | |