class HexagonDAGToDAGISel : public SelectionDAGISel {
/// Subtarget - Keep a pointer to the Hexagon Subtarget around so that we can
/// make the right decision when generating code for different targets.
- const HexagonSubtarget &Subtarget;
+ const HexagonSubtarget *Subtarget;
// Keep a reference to HexagonTargetMachine.
const HexagonTargetMachine& TM;
public:
explicit HexagonDAGToDAGISel(HexagonTargetMachine &targetmachine,
CodeGenOpt::Level OptLevel)
- : SelectionDAGISel(targetmachine, OptLevel),
- Subtarget(targetmachine.getSubtarget<HexagonSubtarget>()),
- TM(targetmachine) {
+ : SelectionDAGISel(targetmachine, OptLevel), TM(targetmachine) {
initializeHexagonDAGToDAGISelPass(*PassRegistry::getPassRegistry());
}
bool hasNumUsesBelowThresGA(SDNode *N) const;
bool SelectADDRriU6_1(SDValue& N, SDValue &R1, SDValue &R2);
bool SelectADDRriU6_2(SDValue& N, SDValue &R1, SDValue &R2);
+ // Complex Pattern Selectors.
+ inline bool SelectAddrGA(SDValue &N, SDValue &R);
+ inline bool SelectAddrGP(SDValue &N, SDValue &R);
+ bool SelectGlobalAddress(SDValue &N, SDValue &R, bool UseGP);
+ bool SelectAddrFI(SDValue &N, SDValue &R);
+
const char *getPassName() const override {
return "Hexagon DAG->DAG Pattern Instruction Selection";
}
+ bool runOnMachineFunction(MachineFunction &MF) override {
+ Subtarget = &MF.getSubtarget<HexagonSubtarget>();
+ return SelectionDAGISel::runOnMachineFunction(MF);
+ }
+
/// SelectInlineAsmMemoryOperand - Implement addressing mode selection for
/// inline asm expressions.
bool SelectInlineAsmMemoryOperand(const SDValue &Op,
return CurDAG->getTargetConstant(Imm - 1, MVT::i32);
}
+// XformSToSM2Imm - Return a target constant decremented by 2.
+inline SDValue XformSToSM2Imm(unsigned Imm) {
+ return CurDAG->getTargetConstant(Imm - 2, MVT::i32);
+}
+
+// XformSToSM3Imm - Return a target constant decremented by 3.
+inline SDValue XformSToSM3Imm(unsigned Imm) {
+ return CurDAG->getTargetConstant(Imm - 3, MVT::i32);
+}
+
// Include the pieces autogenerated from the target description.
#include "HexagonGenDAGISel.inc"
+
+private:
+ bool isValueExtension(SDValue const &Val, unsigned FromBits, SDValue &Src);
};
} // end anonymous namespace
}
}
-
-// Intrinsics that have predicate operands.
-static unsigned doesIntrinsicContainPredicate(unsigned ID)
-{
- switch (ID) {
- default:
- return 0;
- case Intrinsic::hexagon_C2_tfrpr:
- return Hexagon::C2_tfrpr;
- case Intrinsic::hexagon_C2_and:
- return Hexagon::C2_and;
- case Intrinsic::hexagon_C2_xor:
- return Hexagon::C2_xor;
- case Intrinsic::hexagon_C2_or:
- return Hexagon::C2_or;
- case Intrinsic::hexagon_C2_not:
- return Hexagon::C2_not;
- case Intrinsic::hexagon_C2_any8:
- return Hexagon::C2_any8;
- case Intrinsic::hexagon_C2_all8:
- return Hexagon::C2_all8;
- case Intrinsic::hexagon_C2_vitpack:
- return Hexagon::C2_vitpack;
- case Intrinsic::hexagon_C2_mask:
- return Hexagon::C2_mask;
- case Intrinsic::hexagon_C2_mux:
- return Hexagon::C2_mux;
-
- // Mapping hexagon_C2_muxir to MUX_pri. This is pretty weird - but
- // that's how it's mapped in q6protos.h.
- case Intrinsic::hexagon_C2_muxir:
- return Hexagon::C2_muxri;
-
- // Mapping hexagon_C2_muxri to MUX_pir. This is pretty weird - but
- // that's how it's mapped in q6protos.h.
- case Intrinsic::hexagon_C2_muxri:
- return Hexagon::C2_muxir;
-
- case Intrinsic::hexagon_C2_muxii:
- return Hexagon::C2_muxii;
- case Intrinsic::hexagon_C2_vmux:
- return Hexagon::VMUX_prr64;
- case Intrinsic::hexagon_S2_valignrb:
- return Hexagon::VALIGN_rrp;
- case Intrinsic::hexagon_S2_vsplicerb:
- return Hexagon::VSPLICE_rrp;
- }
-}
-
-
static bool OffsetFitsS11(EVT MemType, int64_t Offset) {
if (MemType == MVT::i64 && isShiftedInt<11,3>(Offset)) {
return true;
dl, PointerTy,
TargAddr);
// Figure out base + offset opcode
- if (LoadedVT == MVT::i64) Opcode = Hexagon::LDrid_indexed;
+ if (LoadedVT == MVT::i64) Opcode = Hexagon::L2_loadrd_io;
else if (LoadedVT == MVT::i32) Opcode = Hexagon::L2_loadri_io;
else if (LoadedVT == MVT::i16) Opcode = Hexagon::L2_loadrh_io;
else if (LoadedVT == MVT::i8) Opcode = Hexagon::L2_loadrb_io;
if (SelectADDRriS11_2(N1, CPTmpN1_0, CPTmpN1_1) &&
N1.getNode()->getValueType(0) == MVT::i32) {
- const HexagonInstrInfo *TII = static_cast<const HexagonInstrInfo *>(
- TM.getSubtargetImpl()->getInstrInfo());
+ const HexagonInstrInfo *TII = Subtarget->getInstrInfo();
if (TII->isValidAutoIncImm(LoadedVT, Val)) {
SDValue TargetConst = CurDAG->getTargetConstant(Val, MVT::i32);
SDNode *Result_1 = CurDAG->getMachineNode(Opcode, dl, MVT::i32, MVT::i32,
Chain);
SDNode *Result_2 = CurDAG->getMachineNode(Hexagon::A2_sxtw, dl,
MVT::i64, SDValue(Result_1, 0));
- SDNode* Result_3 = CurDAG->getMachineNode(Hexagon::ADD_ri, dl,
+ SDNode* Result_3 = CurDAG->getMachineNode(Hexagon::A2_addi, dl,
MVT::i32, Base, TargetConstVal,
SDValue(Result_1, 1));
MachineSDNode::mmo_iterator MemOp = MF->allocateMemRefsArray(1);
if (SelectADDRriS11_2(N1, CPTmpN1_0, CPTmpN1_1) &&
N1.getNode()->getValueType(0) == MVT::i32) {
- const HexagonInstrInfo *TII = static_cast<const HexagonInstrInfo *>(
- TM.getSubtargetImpl()->getInstrInfo());
+ const HexagonInstrInfo *TII = Subtarget->getInstrInfo();
if (TII->isValidAutoIncImm(LoadedVT, Val)) {
SDValue TargetConstVal = CurDAG->getTargetConstant(Val, MVT::i32);
SDValue TargetConst0 = CurDAG->getTargetConstant(0, MVT::i32);
SDValue(Result_2,0),
SDValue(Result_1,0));
// Add offset to base.
- SDNode* Result_4 = CurDAG->getMachineNode(Hexagon::ADD_ri, dl, MVT::i32,
+ SDNode* Result_4 = CurDAG->getMachineNode(Hexagon::A2_addi, dl, MVT::i32,
Base, TargetConstVal,
SDValue(Result_1, 1));
MachineSDNode::mmo_iterator MemOp = MF->allocateMemRefsArray(1);
bool zextval = (LD->getExtensionType() == ISD::ZEXTLOAD);
// Figure out the opcode.
- const HexagonInstrInfo *TII = static_cast<const HexagonInstrInfo *>(
- TM.getSubtargetImpl()->getInstrInfo());
+ const HexagonInstrInfo *TII = Subtarget->getInstrInfo();
if (LoadedVT == MVT::i64) {
if (TII->isValidAutoIncImm(LoadedVT, Val))
- Opcode = Hexagon::POST_LDrid;
+ Opcode = Hexagon::L2_loadrd_pi;
else
- Opcode = Hexagon::LDrid;
+ Opcode = Hexagon::L2_loadrd_io;
} else if (LoadedVT == MVT::i32) {
if (TII->isValidAutoIncImm(LoadedVT, Val))
- Opcode = Hexagon::POST_LDriw;
+ Opcode = Hexagon::L2_loadri_pi;
else
Opcode = Hexagon::L2_loadri_io;
} else if (LoadedVT == MVT::i16) {
if (TII->isValidAutoIncImm(LoadedVT, Val))
- Opcode = zextval ? Hexagon::POST_LDriuh : Hexagon::POST_LDrih;
+ Opcode = zextval ? Hexagon::L2_loadruh_pi : Hexagon::L2_loadrh_pi;
else
Opcode = zextval ? Hexagon::L2_loadruh_io : Hexagon::L2_loadrh_io;
} else if (LoadedVT == MVT::i8) {
if (TII->isValidAutoIncImm(LoadedVT, Val))
- Opcode = zextval ? Hexagon::POST_LDriub : Hexagon::POST_LDrib;
+ Opcode = zextval ? Hexagon::L2_loadrub_pi : Hexagon::L2_loadrb_pi;
else
Opcode = zextval ? Hexagon::L2_loadrub_io : Hexagon::L2_loadrb_io;
} else
LD->getValueType(0),
MVT::Other, Base, TargetConst0,
Chain);
- SDNode* Result_2 = CurDAG->getMachineNode(Hexagon::ADD_ri, dl, MVT::i32,
+ SDNode* Result_2 = CurDAG->getMachineNode(Hexagon::A2_addi, dl, MVT::i32,
Base, TargetConstVal,
SDValue(Result_1, 1));
MachineSDNode::mmo_iterator MemOp = MF->allocateMemRefsArray(1);
// Offset value must be within representable range
// and must have correct alignment properties.
- const HexagonInstrInfo *TII = static_cast<const HexagonInstrInfo *>(
- TM.getSubtargetImpl()->getInstrInfo());
+ const HexagonInstrInfo *TII = Subtarget->getInstrInfo();
if (TII->isValidAutoIncImm(StoredVT, Val)) {
SDValue Ops[] = {Base, CurDAG->getTargetConstant(Val, MVT::i32), Value,
Chain};
unsigned Opcode = 0;
// Figure out the post inc version of opcode.
- if (StoredVT == MVT::i64) Opcode = Hexagon::POST_STdri;
- else if (StoredVT == MVT::i32) Opcode = Hexagon::POST_STwri;
- else if (StoredVT == MVT::i16) Opcode = Hexagon::POST_SThri;
- else if (StoredVT == MVT::i8) Opcode = Hexagon::POST_STbri;
+ if (StoredVT == MVT::i64) Opcode = Hexagon::S2_storerd_pi;
+ else if (StoredVT == MVT::i32) Opcode = Hexagon::S2_storeri_pi;
+ else if (StoredVT == MVT::i16) Opcode = Hexagon::S2_storerh_pi;
+ else if (StoredVT == MVT::i8) Opcode = Hexagon::S2_storerb_pi;
else llvm_unreachable("unknown memory type");
// Build post increment store.
unsigned Opcode = 0;
// Figure out the opcode.
- if (StoredVT == MVT::i64) Opcode = Hexagon::STrid;
- else if (StoredVT == MVT::i32) Opcode = Hexagon::STriw_indexed;
- else if (StoredVT == MVT::i16) Opcode = Hexagon::STrih;
- else if (StoredVT == MVT::i8) Opcode = Hexagon::STrib;
+ if (StoredVT == MVT::i64) Opcode = Hexagon::S2_storerd_io;
+ else if (StoredVT == MVT::i32) Opcode = Hexagon::S2_storeri_io;
+ else if (StoredVT == MVT::i16) Opcode = Hexagon::S2_storerh_io;
+ else if (StoredVT == MVT::i8) Opcode = Hexagon::S2_storerb_io;
else llvm_unreachable("unknown memory type");
// Build regular store.
SDValue TargetConstVal = CurDAG->getTargetConstant(Val, MVT::i32);
SDNode* Result_1 = CurDAG->getMachineNode(Opcode, dl, MVT::Other, Ops);
// Build splitted incriment instruction.
- SDNode* Result_2 = CurDAG->getMachineNode(Hexagon::ADD_ri, dl, MVT::i32,
+ SDNode* Result_2 = CurDAG->getMachineNode(Hexagon::A2_addi, dl, MVT::i32,
Base,
TargetConstVal,
SDValue(Result_1, 0));
TargAddr);
// Figure out base + offset opcode
- if (StoredVT == MVT::i64) Opcode = Hexagon::STrid_indexed;
- else if (StoredVT == MVT::i32) Opcode = Hexagon::STriw_indexed;
- else if (StoredVT == MVT::i16) Opcode = Hexagon::STrih_indexed;
- else if (StoredVT == MVT::i8) Opcode = Hexagon::STrib_indexed;
+ if (StoredVT == MVT::i64) Opcode = Hexagon::S2_storerd_io;
+ else if (StoredVT == MVT::i32) Opcode = Hexagon::S2_storeri_io;
+ else if (StoredVT == MVT::i16) Opcode = Hexagon::S2_storerh_io;
+ else if (StoredVT == MVT::i8) Opcode = Hexagon::S2_storerb_io;
else llvm_unreachable("unknown memory type");
SDValue Ops[] = {SDValue(NewBase,0),
return SelectCode(N);
}
-
//
// Checking for intrinsics which have predicate registers as operand(s)
// and lowering to the actual intrinsic.
//
SDNode *HexagonDAGToDAGISel::SelectIntrinsicWOChain(SDNode *N) {
- SDLoc dl(N);
- unsigned ID = cast<ConstantSDNode>(N->getOperand(0))->getZExtValue();
- unsigned IntrinsicWithPred = doesIntrinsicContainPredicate(ID);
-
- // We are concerned with only those intrinsics that have predicate registers
- // as at least one of the operands.
- if (IntrinsicWithPred) {
- SmallVector<SDValue, 8> Ops;
- const HexagonInstrInfo *TII = static_cast<const HexagonInstrInfo *>(
- TM.getSubtargetImpl()->getInstrInfo());
- const MCInstrDesc &MCID = TII->get(IntrinsicWithPred);
- const TargetRegisterInfo *TRI = TM.getSubtargetImpl()->getRegisterInfo();
-
- // Iterate over all the operands of the intrinsics.
- // For PredRegs, do the transfer.
- // For Double/Int Regs, just preserve the value
- // For immediates, lower it.
- for (unsigned i = 1; i < N->getNumOperands(); ++i) {
- SDNode *Arg = N->getOperand(i).getNode();
- const TargetRegisterClass *RC = TII->getRegClass(MCID, i, TRI, *MF);
-
- if (RC == &Hexagon::IntRegsRegClass ||
- RC == &Hexagon::DoubleRegsRegClass) {
- Ops.push_back(SDValue(Arg, 0));
- } else if (RC == &Hexagon::PredRegsRegClass) {
- // Do the transfer.
- SDNode *PdRs = CurDAG->getMachineNode(Hexagon::C2_tfrrp, dl, MVT::i1,
- SDValue(Arg, 0));
- Ops.push_back(SDValue(PdRs,0));
- } else if (!RC && (dyn_cast<ConstantSDNode>(Arg) != nullptr)) {
- // This is immediate operand. Lower it here making sure that we DO have
- // const SDNode for immediate value.
- int32_t Val = cast<ConstantSDNode>(Arg)->getSExtValue();
- SDValue SDVal = CurDAG->getTargetConstant(Val, MVT::i32);
- Ops.push_back(SDVal);
- } else {
- llvm_unreachable("Unimplemented");
- }
- }
- EVT ReturnValueVT = N->getValueType(0);
- SDNode *Result = CurDAG->getMachineNode(IntrinsicWithPred, dl,
- ReturnValueVT, Ops);
- ReplaceUses(N, Result);
- return Result;
+ unsigned IID = cast<ConstantSDNode>(N->getOperand(0))->getZExtValue();
+ unsigned Bits;
+ switch (IID) {
+ case Intrinsic::hexagon_S2_vsplatrb:
+ Bits = 8;
+ break;
+ case Intrinsic::hexagon_S2_vsplatrh:
+ Bits = 16;
+ break;
+ default:
+ return SelectCode(N);
+ }
+
+ SDValue const &V = N->getOperand(1);
+ SDValue U;
+ if (isValueExtension(V, Bits, U)) {
+ SDValue R = CurDAG->getNode(N->getOpcode(), SDLoc(N), N->getValueType(0),
+ N->getOperand(0), U);
+ return SelectCode(R.getNode());
}
return SelectCode(N);
}
}
return false;
}
+
+bool HexagonDAGToDAGISel::SelectAddrFI(SDValue& N, SDValue &R) {
+ if (N.getOpcode() != ISD::FrameIndex)
+ return false;
+ FrameIndexSDNode *FX = cast<FrameIndexSDNode>(N);
+ R = CurDAG->getTargetFrameIndex(FX->getIndex(), MVT::i32);
+ return true;
+}
+
+inline bool HexagonDAGToDAGISel::SelectAddrGA(SDValue &N, SDValue &R) {
+ return SelectGlobalAddress(N, R, false);
+}
+
+inline bool HexagonDAGToDAGISel::SelectAddrGP(SDValue &N, SDValue &R) {
+ return SelectGlobalAddress(N, R, true);
+}
+
+bool HexagonDAGToDAGISel::SelectGlobalAddress(SDValue &N, SDValue &R,
+ bool UseGP) {
+ switch (N.getOpcode()) {
+ case ISD::ADD: {
+ SDValue N0 = N.getOperand(0);
+ SDValue N1 = N.getOperand(1);
+ unsigned GAOpc = N0.getOpcode();
+ if (UseGP && GAOpc != HexagonISD::CONST32_GP)
+ return false;
+ if (!UseGP && GAOpc != HexagonISD::CONST32)
+ return false;
+ if (ConstantSDNode *Const = dyn_cast<ConstantSDNode>(N1)) {
+ SDValue Addr = N0.getOperand(0);
+ if (GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Addr)) {
+ if (GA->getOpcode() == ISD::TargetGlobalAddress) {
+ uint64_t NewOff = GA->getOffset() + (uint64_t)Const->getSExtValue();
+ R = CurDAG->getTargetGlobalAddress(GA->getGlobal(), SDLoc(Const),
+ N.getValueType(), NewOff);
+ return true;
+ }
+ }
+ }
+ break;
+ }
+ case HexagonISD::CONST32:
+ // The operand(0) of CONST32 is TargetGlobalAddress, which is what we
+ // want in the instruction.
+ if (!UseGP)
+ R = N.getOperand(0);
+ return !UseGP;
+ case HexagonISD::CONST32_GP:
+ if (UseGP)
+ R = N.getOperand(0);
+ return UseGP;
+ default:
+ return false;
+ }
+
+ return false;
+}
+
+bool HexagonDAGToDAGISel::isValueExtension(SDValue const &Val,
+ unsigned FromBits, SDValue &Src) {
+ unsigned Opc = Val.getOpcode();
+ switch (Opc) {
+ case ISD::SIGN_EXTEND:
+ case ISD::ZERO_EXTEND:
+ case ISD::ANY_EXTEND: {
+ SDValue const &Op0 = Val.getOperand(0);
+ EVT T = Op0.getValueType();
+ if (T.isInteger() && T.getSizeInBits() == FromBits) {
+ Src = Op0;
+ return true;
+ }
+ break;
+ }
+ case ISD::SIGN_EXTEND_INREG:
+ case ISD::AssertSext:
+ case ISD::AssertZext:
+ if (Val.getOperand(0).getValueType().isInteger()) {
+ VTSDNode *T = cast<VTSDNode>(Val.getOperand(1));
+ if (T->getVT().getSizeInBits() == FromBits) {
+ Src = Val.getOperand(0);
+ return true;
+ }
+ }
+ break;
+ case ISD::AND: {
+ // Check if this is an AND with "FromBits" of lower bits set to 1.
+ uint64_t FromMask = (1 << FromBits) - 1;
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Val.getOperand(0))) {
+ if (C->getZExtValue() == FromMask) {
+ Src = Val.getOperand(1);
+ return true;
+ }
+ }
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Val.getOperand(1))) {
+ if (C->getZExtValue() == FromMask) {
+ Src = Val.getOperand(0);
+ return true;
+ }
+ }
+ break;
+ }
+ case ISD::OR:
+ case ISD::XOR: {
+ // OR/XOR with the lower "FromBits" bits set to 0.
+ uint64_t FromMask = (1 << FromBits) - 1;
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Val.getOperand(0))) {
+ if ((C->getZExtValue() & FromMask) == 0) {
+ Src = Val.getOperand(1);
+ return true;
+ }
+ }
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Val.getOperand(1))) {
+ if ((C->getZExtValue() & FromMask) == 0) {
+ Src = Val.getOperand(0);
+ return true;
+ }
+ }
+ }
+ default:
+ break;
+ }
+ return false;
+}
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