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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; This testcases makes sure that mem2reg can handle unreachable blocks.
; RUN: opt < %s -passes=mem2reg -S | FileCheck %s
define i32 @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: Loop:
; CHECK-NEXT: br label [[ENDOFLOOP:%.*]]
; CHECK: Unreachable:
; CHECK-NEXT: br label [[ENDOFLOOP]]
; CHECK: EndOfLoop:
; CHECK-NEXT: br label [[LOOP]]
;
%X = alloca i32 ; <ptr> [#uses=2]
store i32 6, ptr %X
br label %Loop
Loop: ; preds = %EndOfLoop, %0
store i32 5, ptr %X
br label %EndOfLoop
Unreachable: ; No predecessors!
br label %EndOfLoop
EndOfLoop: ; preds = %Unreachable, %Loop
br label %Loop
}
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