return SDValue();
}
-// Handle only specific vector loads.
-SDValue HexagonTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
- EVT VT = Op.getValueType();
- SDLoc DL(Op);
- LoadSDNode *LoadNode = cast<LoadSDNode>(Op);
- SDValue Chain = LoadNode->getChain();
- SDValue Ptr = Op.getOperand(1);
- SDValue LoweredLoad;
- SDValue Result;
- SDValue Base = LoadNode->getBasePtr();
- ISD::LoadExtType Ext = LoadNode->getExtensionType();
- unsigned Alignment = LoadNode->getAlignment();
- SDValue LoadChain;
-
- if(Ext == ISD::NON_EXTLOAD)
- Ext = ISD::ZEXTLOAD;
-
- if (VT == MVT::v4i16) {
- if (Alignment == 2) {
- SDValue Loads[4];
- // Base load.
- Loads[0] = DAG.getExtLoad(Ext, DL, MVT::i32, Chain, Base,
- LoadNode->getPointerInfo(), MVT::i16, Alignment,
- LoadNode->getMemOperand()->getFlags());
- // Base+2 load.
- SDValue Increment = DAG.getConstant(2, DL, MVT::i32);
- Ptr = DAG.getNode(ISD::ADD, DL, Base.getValueType(), Base, Increment);
- Loads[1] = DAG.getExtLoad(Ext, DL, MVT::i32, Chain, Ptr,
- LoadNode->getPointerInfo(), MVT::i16, Alignment,
- LoadNode->getMemOperand()->getFlags());
- // SHL 16, then OR base and base+2.
- SDValue ShiftAmount = DAG.getConstant(16, DL, MVT::i32);
- SDValue Tmp1 = DAG.getNode(ISD::SHL, DL, MVT::i32, Loads[1], ShiftAmount);
- SDValue Tmp2 = DAG.getNode(ISD::OR, DL, MVT::i32, Tmp1, Loads[0]);
- // Base + 4.
- Increment = DAG.getConstant(4, DL, MVT::i32);
- Ptr = DAG.getNode(ISD::ADD, DL, Base.getValueType(), Base, Increment);
- Loads[2] = DAG.getExtLoad(Ext, DL, MVT::i32, Chain, Ptr,
- LoadNode->getPointerInfo(), MVT::i16, Alignment,
- LoadNode->getMemOperand()->getFlags());
- // Base + 6.
- Increment = DAG.getConstant(6, DL, MVT::i32);
- Ptr = DAG.getNode(ISD::ADD, DL, Base.getValueType(), Base, Increment);
- Loads[3] = DAG.getExtLoad(Ext, DL, MVT::i32, Chain, Ptr,
- LoadNode->getPointerInfo(), MVT::i16, Alignment,
- LoadNode->getMemOperand()->getFlags());
- // SHL 16, then OR base+4 and base+6.
- Tmp1 = DAG.getNode(ISD::SHL, DL, MVT::i32, Loads[3], ShiftAmount);
- SDValue Tmp4 = DAG.getNode(ISD::OR, DL, MVT::i32, Tmp1, Loads[2]);
- // Combine to i64. This could be optimised out later if we can
- // affect reg allocation of this code.
- Result = DAG.getNode(HexagonISD::COMBINE, DL, MVT::i64, Tmp4, Tmp2);
- LoadChain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
- Loads[0].getValue(1), Loads[1].getValue(1),
- Loads[2].getValue(1), Loads[3].getValue(1));
- } else {
- // Perform default type expansion.
- Result = DAG.getLoad(MVT::i64, DL, Chain, Ptr, LoadNode->getPointerInfo(),
- LoadNode->getAlignment(),
- LoadNode->getMemOperand()->getFlags());
- LoadChain = Result.getValue(1);
- }
- } else
- llvm_unreachable("Custom lowering unsupported load");
-
- Result = DAG.getNode(ISD::BITCAST, DL, VT, Result);
- // Since we pretend to lower a load, we need the original chain
- // info attached to the result.
- SDValue Ops[] = { Result, LoadChain };
-
- return DAG.getMergeValues(Ops, DL);
-}
-
SDValue
HexagonTargetLowering::LowerConstantPool(SDValue Op, SelectionDAG &DAG) const {
EVT ValTy = Op.getValueType();
// Handling of vector operations.
//
- // Custom lower v4i16 load only. Let v4i16 store to be
- // promoted for now.
promoteLdStType(MVT::v4i8, MVT::i32);
promoteLdStType(MVT::v2i16, MVT::i32);
promoteLdStType(MVT::v8i8, MVT::i64);
+ promoteLdStType(MVT::v4i16, MVT::i64);
promoteLdStType(MVT::v2i32, MVT::i64);
- setOperationAction(ISD::LOAD, MVT::v4i16, Custom);
- setOperationAction(ISD::STORE, MVT::v4i16, Promote);
- AddPromotedToType(ISD::LOAD, MVT::v4i16, MVT::i64);
- AddPromotedToType(ISD::STORE, MVT::v4i16, MVT::i64);
-
// Set the action for vector operations to "expand", then override it with
// either "custom" or "legal" for specific cases.
static const unsigned VectExpOps[] = {
case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
case ISD::GLOBAL_OFFSET_TABLE: return LowerGLOBAL_OFFSET_TABLE(Op, DAG);
case ISD::VASTART: return LowerVASTART(Op, DAG);
- // Custom lower some vector loads.
- case ISD::LOAD: return LowerLOAD(Op, DAG);
case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG);
case ISD::SETCC: return LowerSETCC(Op, DAG);
case ISD::VSELECT: return LowerVSELECT(Op, DAG);
OSDN Git Service
