diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index d0667ff..76eeb64 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -5395,7 +5395,8 @@ LowerAsSplatVectorLoad(SDValue SrcOp, MVT VT, SDLoc dl, SelectionDAG &DAG) { /// rather than undef via VZEXT_LOAD, but we do not detect that case today. /// There's even a handy isZeroNode for that purpose. static SDValue EltsFromConsecutiveLoads(EVT VT, SmallVectorImpl<SDValue> &Elts, - SDLoc &DL, SelectionDAG &DAG) { + SDLoc &DL, SelectionDAG &DAG, + bool isAfterLegalize) { EVT EltVT = VT.getVectorElementType(); unsigned NumElems = Elts.size(); @@ -5431,7 +5432,13 @@ 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) { + + if (isAfterLegalize && + !DAG.getTargetLoweringInfo().isOperationLegal(ISD::LOAD, VT)) + return SDValue(); + SDValue NewLd = SDValue(); + if (DAG.InferPtrAlignment(LDBase->getBasePtr()) >= 16) NewLd = DAG.getLoad(VT, DL, LDBase->getChain(), LDBase->getBasePtr(), LDBase->getPointerInfo(), @@ -6075,7 +6082,7 @@ X86TargetLowering::LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const { V[i] = Op.getOperand(i); // Check for elements which are consecutive loads. - SDValue LD = EltsFromConsecutiveLoads(VT, V, dl, DAG); + SDValue LD = EltsFromConsecutiveLoads(VT, V, dl, DAG, false); if (LD.getNode()) return LD; @@ -16263,7 +16270,7 @@ static SDValue PerformShuffleCombine(SDNode *N, SelectionDAG &DAG, for (unsigned i = 0, e = VT.getVectorNumElements(); i != e; ++i) Elts.push_back(getShuffleScalarElt(N, i, DAG, 0)); - return EltsFromConsecutiveLoads(VT, Elts, dl, DAG); + return EltsFromConsecutiveLoads(VT, Elts, dl, DAG, true); } /// PerformTruncateCombine - Converts truncate operation to |