File: 2003-04-18-DeadBlockProblem.ll

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llvm-toolchain-13 1%3A13.0.1-6~deb11u1
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; This testcases makes sure that mem2reg can handle unreachable blocks.
; RUN: opt < %s -mem2reg

define i32 @test() {
	%X = alloca i32		; <i32*> [#uses=2]
	store i32 6, i32* %X
	br label %Loop
Loop:		; preds = %EndOfLoop, %0
	store i32 5, i32* %X
	br label %EndOfLoop
Unreachable:		; No predecessors!
	br label %EndOfLoop
EndOfLoop:		; preds = %Unreachable, %Loop
	br label %Loop
}