diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 769f901..bdb7ea6 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -5109,15 +5109,27 @@ static SDValue EltsFromConsecutiveLoads(EVT VT, SmallVectorImpl<SDValue> &Elts, // load of the entire vector width starting at the base pointer. If we found // consecutive loads for the low half, generate a vzext_load node. if (LastLoadedElt == NumElems - 1) { + SDValue NewLd = SDValue(); if (DAG.InferPtrAlignment(LDBase->getBasePtr()) >= 16) - return DAG.getLoad(VT, DL, LDBase->getChain(), LDBase->getBasePtr(), - LDBase->getPointerInfo(), - LDBase->isVolatile(), LDBase->isNonTemporal(), - LDBase->isInvariant(), 0); - return DAG.getLoad(VT, DL, LDBase->getChain(), LDBase->getBasePtr(), - LDBase->getPointerInfo(), - LDBase->isVolatile(), LDBase->isNonTemporal(), - LDBase->isInvariant(), LDBase->getAlignment()); + NewLd = DAG.getLoad(VT, DL, LDBase->getChain(), LDBase->getBasePtr(), + LDBase->getPointerInfo(), + LDBase->isVolatile(), LDBase->isNonTemporal(), + LDBase->isInvariant(), 0); + NewLd = DAG.getLoad(VT, DL, LDBase->getChain(), LDBase->getBasePtr(), + LDBase->getPointerInfo(), + LDBase->isVolatile(), LDBase->isNonTemporal(), + LDBase->isInvariant(), LDBase->getAlignment()); + + if (LDBase->hasAnyUseOfValue(1)) { + SDValue NewChain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other, + SDValue(LDBase, 1), + SDValue(NewLd.getNode(), 1)); + DAG.ReplaceAllUsesOfValueWith(SDValue(LDBase, 1), NewChain); + DAG.UpdateNodeOperands(NewChain.getNode(), SDValue(LDBase, 1), + SDValue(NewLd.getNode(), 1)); + } + + return NewLd; } if (NumElems == 4 && LastLoadedElt == 1 && DAG.getTargetLoweringInfo().isTypeLegal(MVT::v2i64)) { |