+
+static SDValue initAccumulator(SDValue In, DebugLoc DL, SelectionDAG &DAG) {
+ SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
+ DAG.getConstant(0, MVT::i32));
+ SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
+ DAG.getConstant(1, MVT::i32));
+ return DAG.getNode(MipsISD::InsertLOHI, DL, MVT::Untyped, InLo, InHi);
+}
+
+static SDValue extractLOHI(SDValue Op, DebugLoc DL, SelectionDAG &DAG) {
+ SDValue Lo = DAG.getNode(MipsISD::ExtractLOHI, DL, MVT::i32, Op,
+ DAG.getConstant(Mips::sub_lo, MVT::i32));
+ SDValue Hi = DAG.getNode(MipsISD::ExtractLOHI, DL, MVT::i32, Op,
+ DAG.getConstant(Mips::sub_hi, MVT::i32));
+ return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
+}
+
+// This function expands mips intrinsic nodes which have 64-bit input operands
+// or output values.
+//
+// out64 = intrinsic-node in64
+// =>
+// lo = copy (extract-element (in64, 0))
+// hi = copy (extract-element (in64, 1))
+// mips-specific-node
+// v0 = copy lo
+// v1 = copy hi
+// out64 = merge-values (v0, v1)
+//
+static SDValue lowerDSPIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
+ DebugLoc DL = Op.getDebugLoc();
+ bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other;
+ SmallVector<SDValue, 3> Ops;
+ unsigned OpNo = 0;
+
+ // See if Op has a chain input.
+ if (HasChainIn)
+ Ops.push_back(Op->getOperand(OpNo++));
+
+ // The next operand is the intrinsic opcode.
+ assert(Op->getOperand(OpNo).getOpcode() == ISD::TargetConstant);
+
+ // See if the next operand has type i64.
+ SDValue Opnd = Op->getOperand(++OpNo), In64;
+
+ if (Opnd.getValueType() == MVT::i64)
+ In64 = initAccumulator(Opnd, DL, DAG);
+ else
+ Ops.push_back(Opnd);
+
+ // Push the remaining operands.
+ for (++OpNo ; OpNo < Op->getNumOperands(); ++OpNo)
+ Ops.push_back(Op->getOperand(OpNo));
+
+ // Add In64 to the end of the list.
+ if (In64.getNode())
+ Ops.push_back(In64);
+
+ // Scan output.
+ SmallVector<EVT, 2> ResTys;
+
+ for (SDNode::value_iterator I = Op->value_begin(), E = Op->value_end();
+ I != E; ++I)
+ ResTys.push_back((*I == MVT::i64) ? MVT::Untyped : *I);
+
+ // Create node.
+ SDValue Val = DAG.getNode(Opc, DL, ResTys, &Ops[0], Ops.size());
+ SDValue Out = (ResTys[0] == MVT::Untyped) ? extractLOHI(Val, DL, DAG) : Val;
+
+ if (!HasChainIn)
+ return Out;
+
+ assert(Val->getValueType(1) == MVT::Other);
+ SDValue Vals[] = { Out, SDValue(Val.getNode(), 1) };
+ return DAG.getMergeValues(Vals, 2, DL);
+}
+
+SDValue MipsSETargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
+ SelectionDAG &DAG) const {
+ switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) {
+ default:
+ return SDValue();
+ case Intrinsic::mips_shilo:
+ return lowerDSPIntr(Op, DAG, MipsISD::SHILO);
+ case Intrinsic::mips_dpau_h_qbl:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL);
+ case Intrinsic::mips_dpau_h_qbr:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR);
+ case Intrinsic::mips_dpsu_h_qbl:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL);
+ case Intrinsic::mips_dpsu_h_qbr:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR);
+ case Intrinsic::mips_dpa_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH);
+ case Intrinsic::mips_dps_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH);
+ case Intrinsic::mips_dpax_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH);
+ case Intrinsic::mips_dpsx_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH);
+ case Intrinsic::mips_mulsa_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH);
+ case Intrinsic::mips_mult:
+ return lowerDSPIntr(Op, DAG, MipsISD::Mult);
+ case Intrinsic::mips_multu:
+ return lowerDSPIntr(Op, DAG, MipsISD::Multu);
+ case Intrinsic::mips_madd:
+ return lowerDSPIntr(Op, DAG, MipsISD::MAdd);
+ case Intrinsic::mips_maddu:
+ return lowerDSPIntr(Op, DAG, MipsISD::MAddu);
+ case Intrinsic::mips_msub:
+ return lowerDSPIntr(Op, DAG, MipsISD::MSub);
+ case Intrinsic::mips_msubu:
+ return lowerDSPIntr(Op, DAG, MipsISD::MSubu);
+ }
+}
+
+SDValue MipsSETargetLowering::lowerINTRINSIC_W_CHAIN(SDValue Op,
+ SelectionDAG &DAG) const {
+ switch (cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue()) {
+ default:
+ return SDValue();
+ case Intrinsic::mips_extp:
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTP);
+ case Intrinsic::mips_extpdp:
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTPDP);
+ case Intrinsic::mips_extr_w:
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_W);
+ case Intrinsic::mips_extr_r_w:
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W);
+ case Intrinsic::mips_extr_rs_w:
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W);
+ case Intrinsic::mips_extr_s_h:
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H);
+ case Intrinsic::mips_mthlip:
+ return lowerDSPIntr(Op, DAG, MipsISD::MTHLIP);
+ case Intrinsic::mips_mulsaq_s_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH);
+ case Intrinsic::mips_maq_s_w_phl:
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL);
+ case Intrinsic::mips_maq_s_w_phr:
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR);
+ case Intrinsic::mips_maq_sa_w_phl:
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL);
+ case Intrinsic::mips_maq_sa_w_phr:
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR);
+ case Intrinsic::mips_dpaq_s_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH);
+ case Intrinsic::mips_dpsq_s_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH);
+ case Intrinsic::mips_dpaq_sa_l_w:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W);
+ case Intrinsic::mips_dpsq_sa_l_w:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W);
+ case Intrinsic::mips_dpaqx_s_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH);
+ case Intrinsic::mips_dpaqx_sa_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH);
+ case Intrinsic::mips_dpsqx_s_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH);
+ case Intrinsic::mips_dpsqx_sa_w_ph:
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH);
+ }
+}
+
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