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//===-- Mips16ISelLowering.h - Mips16 DAG Lowering Interface ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Subclass of MipsTargetLowering specialized for mips16.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPS16ISELLOWERING_H
#define LLVM_LIB_TARGET_MIPS_MIPS16ISELLOWERING_H
#include "MipsISelLowering.h"
namespace llvm {
class Mips16TargetLowering : public MipsTargetLowering {
public:
explicit Mips16TargetLowering(const MipsTargetMachine &TM,
const MipsSubtarget &STI);
bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace,
unsigned Align,
bool *Fast) const override;
MachineBasicBlock *
EmitInstrWithCustomInserter(MachineInstr &MI,
MachineBasicBlock *MBB) const override;
private:
bool isEligibleForTailCallOptimization(
const CCState &CCInfo, unsigned NextStackOffset,
const MipsFunctionInfo &FI) const override;
void setMips16HardFloatLibCalls();
unsigned int
getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
const char *getMips16HelperFunction
(Type* RetTy, ArgListTy &Args, bool &needHelper) const;
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;
MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitFEXT_T8I8I16_ins(unsigned BtOpc, unsigned CmpiOpc,
unsigned CmpiXOpc, bool ImmSigned,
MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitFEXT_CCRX16_ins(unsigned SltOpc, MachineInstr &MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitFEXT_CCRXI16_ins(unsigned SltiOpc, unsigned SltiXOpc,
MachineInstr &MI,
MachineBasicBlock *BB) const;
};
}
#endif
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