1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-31 16:02:52 +01:00
llvm-mirror/test/Transforms/SCCP/2002-05-20-MissedIncomingValue.ll

20 lines
467 B
LLVM
Raw Normal View History

2002-05-20 22:48:24 +02:00
; 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: opt < %s -sccp -S | grep phi
2002-05-20 22:48:24 +02:00
define i32 @test(i32 %A, i1 %c) {
2002-05-20 22:48:24 +02:00
bb1:
br label %BB2
BB2: ; preds = %BB4, %bb1
%V = phi i32 [ 0, %bb1 ], [ %A, %BB4 ] ; <i32> [#uses=1]
2002-05-20 22:48:24 +02:00
br label %BB3
BB3: ; preds = %BB2
br i1 %c, label %BB4, label %BB5
BB4: ; preds = %BB3
2002-05-20 22:48:24 +02:00
br label %BB2
BB5: ; preds = %BB3
ret i32 %V
2002-05-20 22:48:24 +02:00
}