; 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 -passes=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 | |
} | |