; CFG Simplification is making a loop dead, then changing the add into: ; ; %V1 = add int %V1, 1 ; ; Which is not valid SSA ; ; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | llvm-dis define void @test() { ; <label>:0 br i1 true, label %end, label %Loop Loop: ; preds = %Loop, %0 %V = phi i32 [ 0, %0 ], [ %V1, %Loop ] ; <i32> [#uses=1] %V1 = add i32 %V, 1 ; <i32> [#uses=1] br label %Loop end: ; preds = %0 ret void }