diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index e3a7305f00..48f8f773be 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1889,11 +1889,13 @@ void SelectionDAG::ComputeMaskedBits(SDValue Op, const APInt &Mask, return; } case ISD::LOAD: { + LoadSDNode *LD = cast<LoadSDNode>(Op); if (ISD::isZEXTLoad(Op.getNode())) { - LoadSDNode *LD = cast<LoadSDNode>(Op); EVT VT = LD->getMemoryVT(); unsigned MemBits = VT.getScalarType().getSizeInBits(); KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - MemBits) & Mask; + } else if (const MDNode *Ranges = LD->getRanges()) { + computeMaskedBitsLoad(*Ranges, Mask, KnownZero); } return; } @@ -4170,7 +4172,8 @@ SelectionDAG::getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, SDValue Ptr, SDValue Offset, MachinePointerInfo PtrInfo, EVT MemVT, bool isVolatile, bool isNonTemporal, bool isInvariant, - unsigned Alignment, const MDNode *TBAAInfo) { + unsigned Alignment, const MDNode *TBAAInfo, + const MDNode *Ranges) { assert(Chain.getValueType() == MVT::Other && "Invalid chain type"); if (Alignment == 0) // Ensure that codegen never sees alignment 0 @@ -4192,7 +4195,7 @@ SelectionDAG::getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType, MachineFunction &MF = getMachineFunction(); MachineMemOperand *MMO = MF.getMachineMemOperand(PtrInfo, Flags, MemVT.getStoreSize(), Alignment, - TBAAInfo); + TBAAInfo, Ranges); return getLoad(AM, ExtType, VT, dl, Chain, Ptr, Offset, MemVT, MMO); } @@ -4248,11 +4251,12 @@ SDValue SelectionDAG::getLoad(EVT VT, DebugLoc dl, MachinePointerInfo PtrInfo, bool isVolatile, bool isNonTemporal, bool isInvariant, unsigned Alignment, - const MDNode *TBAAInfo) { + const MDNode *TBAAInfo, + const MDNode *Ranges) { SDValue Undef = getUNDEF(Ptr.getValueType()); return getLoad(ISD::UNINDEXED, ISD::NON_EXTLOAD, VT, dl, Chain, Ptr, Undef, - PtrInfo, VT, isVolatile, isNonTemporal, isInvariant, Alignment, - TBAAInfo); + PtrInfo, VT, isVolatile, isNonTemporal, isInvariant, Alignment, + TBAAInfo, Ranges); } SDValue SelectionDAG::getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, EVT VT, |