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//===- MipsSEISelLowering.h - MipsSE DAG Lowering Interface -----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Subclass of MipsTargetLowering specialized for mips32/64.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPSSEISELLOWERING_H
#define LLVM_LIB_TARGET_MIPS_MIPSSEISELLOWERING_H
#include "MipsISelLowering.h"
#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/Support/MachineValueType.h"
namespace llvm {
class MachineBasicBlock;
class MachineInstr;
class MipsSubtarget;
class MipsTargetMachine;
class SelectionDAG;
class TargetRegisterClass;
class MipsSETargetLowering : public MipsTargetLowering {
public:
explicit MipsSETargetLowering(const MipsTargetMachine &TM,
const MipsSubtarget &STI);
/// Enable MSA support for the given integer type and Register
/// class.
void addMSAIntType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC);
/// Enable MSA support for the given floating-point type and
/// Register class.
void addMSAFloatType(MVT::SimpleValueType Ty,
const TargetRegisterClass *RC);
bool allowsMisalignedMemoryAccesses(
EVT VT, unsigned AS = 0, unsigned Align = 1,
MachineMemOperand::Flags Flags = MachineMemOperand::MONone,
bool *Fast = nullptr) const override;
SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;
SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override;
MachineBasicBlock *
EmitInstrWithCustomInserter(MachineInstr &MI,
MachineBasicBlock *MBB) const override;
bool isShuffleMaskLegal(ArrayRef<int> Mask, EVT VT) const override {
return false;
}
const TargetRegisterClass *getRepRegClassFor(MVT VT) const override;
private:
bool isEligibleForTailCallOptimization(
const CCState &CCInfo, unsigned NextStackOffset,
const MipsFunctionInfo &FI) const override;
void
getOpndList(SmallVectorImpl<SDValue> &Ops,
std::deque<std::pair<unsigned, SDValue>> &RegsToPass,
bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
bool IsCallReloc, CallLoweringInfo &CLI, SDValue Callee,
SDValue Chain) const override;
SDValue lowerLOAD(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerSTORE(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerBITCAST(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerMulDiv(SDValue Op, unsigned NewOpc, bool HasLo, bool HasHi,
SelectionDAG &DAG) const;
SDValue lowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerINTRINSIC_W_CHAIN(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerINTRINSIC_VOID(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const;
/// Lower VECTOR_SHUFFLE into one of a number of instructions
/// depending on the indices in the shuffle.
SDValue lowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerSELECT(SDValue Op, SelectionDAG &DAG) const;
MachineBasicBlock *emitBPOSGE32(MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitMSACBranchPseudo(MachineInstr &MI,
MachineBasicBlock *BB,
unsigned BranchOp) const;
/// Emit the COPY_FW pseudo instruction
MachineBasicBlock *emitCOPY_FW(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the COPY_FD pseudo instruction
MachineBasicBlock *emitCOPY_FD(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the INSERT_FW pseudo instruction
MachineBasicBlock *emitINSERT_FW(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the INSERT_FD pseudo instruction
MachineBasicBlock *emitINSERT_FD(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the INSERT_([BHWD]|F[WD])_VIDX pseudo instruction
MachineBasicBlock *emitINSERT_DF_VIDX(MachineInstr &MI,
MachineBasicBlock *BB,
unsigned EltSizeInBytes,
bool IsFP) const;
/// Emit the FILL_FW pseudo instruction
MachineBasicBlock *emitFILL_FW(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the FILL_FD pseudo instruction
MachineBasicBlock *emitFILL_FD(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the FEXP2_W_1 pseudo instructions.
MachineBasicBlock *emitFEXP2_W_1(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the FEXP2_D_1 pseudo instructions.
MachineBasicBlock *emitFEXP2_D_1(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the FILL_FW pseudo instruction
MachineBasicBlock *emitLD_F16_PSEUDO(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the FILL_FD pseudo instruction
MachineBasicBlock *emitST_F16_PSEUDO(MachineInstr &MI,
MachineBasicBlock *BB) const;
/// Emit the FEXP2_W_1 pseudo instructions.
MachineBasicBlock *emitFPEXTEND_PSEUDO(MachineInstr &MI,
MachineBasicBlock *BB,
bool IsFGR64) const;
/// Emit the FEXP2_D_1 pseudo instructions.
MachineBasicBlock *emitFPROUND_PSEUDO(MachineInstr &MI,
MachineBasicBlock *BBi,
bool IsFGR64) const;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_MIPS_MIPSSEISELLOWERING_H
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