AArch64: use correct SDValue # when looking for bitfield placement.

The other use really does only care about the SDNode (it checks the
opcode against a whitelist), but bitFieldPlacement can be misled if
the node produces multiple results.

Patch by Ismail Badawi.

llvm-svn: 274567

1 files changed, 3 insertions, 2 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp b/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
index fcca120d885..2e98c41f0e7 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
@@ -2172,7 +2172,8 @@ static bool tryBitfieldInsertOpFromOr(SDNode *N, const APInt &UsefulBits,
     SDValue Dst, Src;
     unsigned ImmR, ImmS;
     bool BiggerPattern = I / 2;
-    SDNode *OrOpd0 = N->getOperand(I % 2).getNode();
+    SDValue OrOpd0Val = N->getOperand(I % 2);
+    SDNode *OrOpd0 = OrOpd0Val.getNode();
     SDValue OrOpd1Val = N->getOperand((I + 1) % 2);
     SDNode *OrOpd1 = OrOpd1Val.getNode();
 
@@ -2197,7 +2198,7 @@ static bool tryBitfieldInsertOpFromOr(SDNode *N, const APInt &UsefulBits,
 
       // If the mask on the insertee is correct, we have a BFXIL operation. We
       // can share the ImmR and ImmS values from the already-computed UBFM.
-    } else if (isBitfieldPositioningOp(CurDAG, SDValue(OrOpd0, 0),
+    } else if (isBitfieldPositioningOp(CurDAG, OrOpd0Val,
                                        BiggerPattern,
                                        Src, DstLSB, Width)) {
       ImmR = (BitWidth - DstLSB) % BitWidth;