LLVM  8.0.0svn
Classes | Public Member Functions | Static Public Member Functions | List of all members
llvm::AMDGPUInstructionSelector Class Reference

#include "Target/AMDGPU/AMDGPUInstructionSelector.h"

Inheritance diagram for llvm::AMDGPUInstructionSelector:
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Collaboration diagram for llvm::AMDGPUInstructionSelector:
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Public Member Functions

 AMDGPUInstructionSelector (const GCNSubtarget &STI, const AMDGPURegisterBankInfo &RBI, const AMDGPUTargetMachine &TM)
bool select (MachineInstr &I, CodeGenCoverage &CoverageInfo) const override
 Select the (possibly generic) instruction I to only use target-specific opcodes. More...
- Public Member Functions inherited from llvm::InstructionSelector
virtual ~InstructionSelector ()=default

Static Public Member Functions

static const chargetName ()

Additional Inherited Members

- Protected Types inherited from llvm::InstructionSelector
using ComplexRendererFns = Optional< SmallVector< std::function< void(MachineInstrBuilder &)>, 4 > >
using RecordedMIVector = SmallVector< MachineInstr *, 4 >
using NewMIVector = SmallVector< MachineInstrBuilder, 4 >
- Protected Member Functions inherited from llvm::InstructionSelector
 InstructionSelector ()
template<class TgtInstructionSelector , class PredicateBitset , class ComplexMatcherMemFn , class CustomRendererFn >
bool executeMatchTable (TgtInstructionSelector &ISel, NewMIVector &OutMIs, MatcherState &State, const ISelInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn > &ISelInfo, const int64_t *MatchTable, const TargetInstrInfo &TII, MachineRegisterInfo &MRI, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI, const PredicateBitset &AvailableFeatures, CodeGenCoverage &CoverageInfo) const
 Execute a given matcher table and return true if the match was successful and false otherwise. More...
virtual const int64_t * getMatchTable () const
virtual bool testImmPredicate_I64 (unsigned, int64_t) const
virtual bool testImmPredicate_APInt (unsigned, const APInt &) const
virtual bool testImmPredicate_APFloat (unsigned, const APFloat &) const
virtual bool testMIPredicate_MI (unsigned, const MachineInstr &) const
bool constrainOperandRegToRegClass (MachineInstr &I, unsigned OpIdx, const TargetRegisterClass &RC, const TargetInstrInfo &TII, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI) const
 Constrain a register operand of an instruction I to a specified register class. More...
bool isOperandImmEqual (const MachineOperand &MO, int64_t Value, const MachineRegisterInfo &MRI) const
bool isBaseWithConstantOffset (const MachineOperand &Root, const MachineRegisterInfo &MRI) const
 Return true if the specified operand is a G_GEP with a G_CONSTANT on the right-hand side. More...
bool isObviouslySafeToFold (MachineInstr &MI, MachineInstr &IntoMI) const
 Return true if MI can obviously be folded into IntoMI. More...

Detailed Description

Definition at line 43 of file AMDGPUInstructionSelector.h.

Constructor & Destructor Documentation

◆ AMDGPUInstructionSelector()

AMDGPUInstructionSelector::AMDGPUInstructionSelector ( const GCNSubtarget STI,
const AMDGPURegisterBankInfo RBI,
const AMDGPUTargetMachine TM 

Member Function Documentation

◆ getName()

static const char* llvm::AMDGPUInstructionSelector::getName ( )

◆ select()

bool AMDGPUInstructionSelector::select ( MachineInstr I,
CodeGenCoverage CoverageInfo 
) const

Select the (possibly generic) instruction I to only use target-specific opcodes.

It is OK to insert multiple instructions, but they cannot be generic pre-isel instructions.

whether selection succeeded.
I.getParent() && I.getParent()->getParent()
if returns true: for I in all mutated/inserted instructions: !isPreISelGenericOpcode(I.getOpcode())

Implements llvm::InstructionSelector.

Definition at line 619 of file AMDGPUInstructionSelector.cpp.

References llvm::MachineInstr::getOpcode(), llvm::MachineInstr::isCopy(), and llvm::isPreISelGenericOpcode().

The documentation for this class was generated from the following files: