hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
28 lines
640 B
LLVM
28 lines
640 B
LLVM
; 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 | FileCheck %s
|
|
|
|
; CHECK-NOT: 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
|
|
}
|
|
|