llvm-6502/test/Transforms/TailDup/PHIUpdateTest.ll

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; This test checks to make sure phi nodes are updated properly
;
; RUN: opt < %s -tailduplicate -disable-output
define i32 @test(i1 %c, i32 %X, i32 %Y) {
br label %L
L: ; preds = %F, %0
%A = add i32 %X, %Y ; <i32> [#uses=1]
br i1 %c, label %T, label %F
F: ; preds = %L
br i1 %c, label %L, label %T
T: ; preds = %F, %L
%V = phi i32 [ %A, %L ], [ 0, %F ] ; <i32> [#uses=1]
ret i32 %V
}