Recommit 132404 with fixes. rdar://problem/5993888

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132424 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 4 deletions

diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index bb4df27034..2eee5012b1 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -1759,13 +1759,14 @@ bool TargetLowering::SimplifyDemandedBits(SDValue Op,
     if (NewMask == APInt::getSignBit(Op.getValueType().getSizeInBits()) &&
         Op.getOperand(0).getValueType().isFloatingPoint() &&
         !Op.getOperand(0).getValueType().isVector()) {
-      if (isOperationLegalOrCustom(ISD::FGETSIGN, MVT::i32)) {
-        EVT Ty = (isOperationLegalOrCustom(ISD::FGETSIGN, Op.getValueType())) ?
-          Op.getValueType() : MVT::i32;
+      bool OpVTLegal = isOperationLegalOrCustom(ISD::FGETSIGN, Op.getValueType());
+      bool i32Legal  = isOperationLegalOrCustom(ISD::FGETSIGN, MVT::i32);
+      if (OpVTLegal || i32Legal) {
+        EVT Ty = OpVTLegal ? Op.getValueType() : MVT::i32;
         // Make a FGETSIGN + SHL to move the sign bit into the appropriate
         // place.  We expect the SHL to be eliminated by other optimizations.
         SDValue Sign = TLO.DAG.getNode(ISD::FGETSIGN, dl, Ty, Op.getOperand(0));
-        if (Ty != Op.getValueType())
+        if (!OpVTLegal)
           Sign = TLO.DAG.getNode(ISD::ZERO_EXTEND, dl, Op.getValueType(), Sign);
         unsigned ShVal = Op.getValueType().getSizeInBits()-1;
         SDValue ShAmt = TLO.DAG.getConstant(ShVal, Op.getValueType());