llvm-6502/test/Transforms/ADCE/2002-05-22-PHITest.ll

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; It is illegal to remove BB1 because it will mess up the PHI node!
;
; RUN: llvm-as < %s | opt -adce | llvm-dis | grep BB1
define i32 @test(i1 %C, i32 %A, i32 %B) {
; <label>:0
br i1 %C, label %BB1, label %BB2
BB1: ; preds = %0
br label %BB2
BB2: ; preds = %BB1, %0
%R = phi i32 [ %A, %0 ], [ %B, %BB1 ] ; <i32> [#uses=1]
ret i32 %R
}