#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"

Inheritance diagram for llvm::InstructionSelector:

Public Member Functions
	~InstructionSelector () override
virtual bool	select (MachineInstr &I)=0
	Select the (possibly generic) instruction `I` to only use target-specific opcodes.
Public Member Functions inherited from llvm::GIMatchTableExecutor
virtual	~GIMatchTableExecutor ()=default
virtual void	setupGeneratedPerFunctionState (MachineFunction &MF)=0
virtual void	setupMF (MachineFunction &mf, GISelValueTracking vt, CodeGenCoverage covinfo=nullptr, ProfileSummaryInfo psi=nullptr, BlockFrequencyInfo bfi=nullptr)
	Setup per-MF executor state.

Public Attributes
MachineOptimizationRemarkEmitter *	MORE = nullptr
GISelObserverWrapper *	AllObservers = nullptr
	Note: InstructionSelect does not track changed instructions.
Public Attributes inherited from llvm::GIMatchTableExecutor
CodeGenCoverage *	CoverageInfo = nullptr
GISelValueTracking *	VT = nullptr
MachineFunction *	MF = nullptr
ProfileSummaryInfo *	PSI = nullptr
BlockFrequencyInfo *	BFI = nullptr
MachineBasicBlock *	CurMBB = nullptr

Protected Member Functions
void	renderFrameIndex (MachineInstrBuilder &MIB, const MachineInstr &MI, int OpIdx) const
Protected Member Functions inherited from llvm::GIMatchTableExecutor
bool	shouldOptForSize (const MachineFunction *MF) const
LLVM_ABI	GIMatchTableExecutor ()
template<class TgtExecutor, class PredicateBitset, class ComplexMatcherMemFn, class CustomRendererFn>
bool	executeMatchTable (TgtExecutor &Exec, MatcherState &State, const ExecInfoTy< PredicateBitset, ComplexMatcherMemFn, CustomRendererFn > &ExecInfo, MachineIRBuilder &Builder, const uint8_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.
virtual const uint8_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 MatcherState &State) const
virtual bool	testMOPredicate_MO (unsigned, const MachineOperand &, const MatcherState &State) const
virtual bool	testSimplePredicate (unsigned) const
virtual bool	runCustomAction (unsigned, const MatcherState &State, NewMIVector &OutMIs) const
LLVM_ABI bool	isOperandImmEqual (const MachineOperand &MO, int64_t Value, const MachineRegisterInfo &MRI, bool Splat=false) const
LLVM_ABI bool	isBaseWithConstantOffset (const MachineOperand &Root, const MachineRegisterInfo &MRI) const
	Return true if the specified operand is a G_PTR_ADD with a G_CONSTANT on the right-hand side.
LLVM_ABI bool	isObviouslySafeToFold (MachineInstr &MI, MachineInstr &IntoMI) const
	Return true if MI can obviously be folded into IntoMI.

Additional Inherited Members
Static Public Member Functions inherited from llvm::GIMatchTableExecutor
static LLVM_ATTRIBUTE_ALWAYS_INLINE uint64_t	fastDecodeULEB128 (const uint8_t *LLVM_ATTRIBUTE_RESTRICT MatchTable, uint64_t &CurrentIdx)
Protected Types inherited from llvm::GIMatchTableExecutor
using	ComplexRendererFns
using	RecordedMIVector = SmallVector<MachineInstr *, 4>
using	NewMIVector = SmallVector<MachineInstrBuilder, 4>
Static Protected Member Functions inherited from llvm::GIMatchTableExecutor
template<typename Ty>
static Ty	readBytesAs (const uint8_t *MatchTable)
static ArrayRef< MachineOperand >	getRemainingOperands (const MachineInstr &MI, unsigned FirstVarOp)

Detailed Description

Definition at line 24 of file InstructionSelector.h.

Constructor & Destructor Documentation

◆ ~InstructionSelector()

llvm::InstructionSelector::~InstructionSelector ( )

overridedefault

Member Function Documentation

◆ renderFrameIndex()

void llvm::InstructionSelector::renderFrameIndex	(	MachineInstrBuilder &	MIB,
		const MachineInstr &	MI,
		int	OpIdx ) const

protected

Definition at line 17 of file InstructionSelector.cpp.

References llvm::MachineInstrBuilder::add(), assert(), MI, and OpIdx.

◆ select()

virtual bool llvm::InstructionSelector::select ( MachineInstr & I )

pure virtual

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.

Returns: whether selection succeeded.

Precondition: I.getParent() && I.getParent()->getParent()

Postcondition: if returns true: for I in all mutated/inserted instructions: !isPreISelGenericOpcode(I.getOpcode())

Implemented in llvm::AMDGPUInstructionSelector.

References I.

Member Data Documentation

◆ AllObservers

GISelObserverWrapper* llvm::InstructionSelector::AllObservers = nullptr

Note: InstructionSelect does not track changed instructions.

changingInstr() and changedInstr() will never be called on these observers.

Definition at line 45 of file InstructionSelector.h.

◆ MORE

MachineOptimizationRemarkEmitter* llvm::InstructionSelector::MORE = nullptr

Definition at line 40 of file InstructionSelector.h.

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

include/llvm/CodeGen/GlobalISel/InstructionSelector.h
lib/CodeGen/GlobalISel/InstructionSelector.cpp

Public Member Functions

Public Attributes

Protected Member Functions

Additional Inherited Members