llvm/test/Transforms/SCCP/2002-05-20-MissedIncomingValue.ll
Tanya Lattner f396cc8730 Upgrade tests to not use llvm-upgrade.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48529 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-19 04:14:49 +00:00

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485 B
LLVM

; This test shows a case where SCCP is incorrectly eliminating the PHI node
; because it thinks it has a constant 0 value, when it really doesn't.
; RUN: llvm-as < %s | opt -sccp | llvm-dis | grep phi
define i32 @test(i32 %A, i1 %c) {
bb1:
br label %BB2
BB2: ; preds = %BB4, %bb1
%V = phi i32 [ 0, %bb1 ], [ %A, %BB4 ] ; <i32> [#uses=1]
br label %BB3
BB3: ; preds = %BB2
br i1 %c, label %BB4, label %BB5
BB4: ; preds = %BB3
br label %BB2
BB5: ; preds = %BB3
ret i32 %V
}