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

17 lines
386 B
LLVM
Raw Normal View History

; It is illegal to remove BB1 because it will mess up the PHI node!
;
; RUN: opt < %s -adce -S | 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
}