LLVM 19.0.0git
Public Member Functions | Protected Attributes | List of all members
llvm::InstructionSelector Class Referenceabstract

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

Inheritance diagram for llvm::InstructionSelector:
Inheritance graph
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Public Member Functions

virtual ~InstructionSelector ()
 
virtual bool select (MachineInstr &I)=0
 Select the (possibly generic) instruction I to only use target-specific opcodes.
 
void setTargetPassConfig (const TargetPassConfig *T)
 
void setRemarkEmitter (MachineOptimizationRemarkEmitter *M)
 
- Public Member Functions inherited from llvm::GIMatchTableExecutor
virtual ~GIMatchTableExecutor ()=default
 
virtual void setupGeneratedPerFunctionState (MachineFunction &MF)=0
 
virtual void setupMF (MachineFunction &mf, GISelKnownBits *kb, CodeGenCoverage *covinfo=nullptr, ProfileSummaryInfo *psi=nullptr, BlockFrequencyInfo *bfi=nullptr)
 Setup per-MF executor state.
 

Protected Attributes

const TargetPassConfigTPC = nullptr
 
MachineOptimizationRemarkEmitterMORE = nullptr
 

Additional Inherited Members

- Public Attributes inherited from llvm::GIMatchTableExecutor
CodeGenCoverageCoverageInfo = nullptr
 
GISelKnownBitsKB = nullptr
 
MachineFunctionMF = nullptr
 
ProfileSummaryInfoPSI = nullptr
 
BlockFrequencyInfoBFI = nullptr
 
MachineBasicBlockCurMBB = nullptr
 
- Protected Types inherited from llvm::GIMatchTableExecutor
using ComplexRendererFns = std::optional< SmallVector< std::function< void(MachineInstrBuilder &)>, 4 > >
 
using RecordedMIVector = SmallVector< MachineInstr *, 4 >
 
using NewMIVector = SmallVector< MachineInstrBuilder, 4 >
 
- Protected Member Functions inherited from llvm::GIMatchTableExecutor
bool shouldOptForSize (const MachineFunction *MF) const
 
 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 testSimplePredicate (unsigned) const
 
virtual void runCustomAction (unsigned, const MatcherState &State, NewMIVector &OutMIs) const
 
bool isOperandImmEqual (const MachineOperand &MO, int64_t Value, const MachineRegisterInfo &MRI, bool Splat=false) const
 
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.
 
bool isObviouslySafeToFold (MachineInstr &MI, MachineInstr &IntoMI) const
 Return true if MI can obviously be folded into IntoMI.
 
- Static Protected Member Functions inherited from llvm::GIMatchTableExecutor
template<typename Ty >
static Ty readBytesAs (const uint8_t *MatchTable)
 

Detailed Description

Definition at line 19 of file InstructionSelector.h.

Constructor & Destructor Documentation

◆ ~InstructionSelector()

llvm::InstructionSelector::~InstructionSelector ( )
virtualdefault

Member Function Documentation

◆ 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.

Referenced by llvm::InstructionSelect::runOnMachineFunction().

◆ setRemarkEmitter()

void llvm::InstructionSelector::setRemarkEmitter ( MachineOptimizationRemarkEmitter M)
inline

Definition at line 37 of file InstructionSelector.h.

References MORE.

Referenced by llvm::InstructionSelect::runOnMachineFunction().

◆ setTargetPassConfig()

void llvm::InstructionSelector::setTargetPassConfig ( const TargetPassConfig T)
inline

Definition at line 35 of file InstructionSelector.h.

References T, and TPC.

Referenced by llvm::InstructionSelect::runOnMachineFunction().

Member Data Documentation

◆ MORE

MachineOptimizationRemarkEmitter* llvm::InstructionSelector::MORE = nullptr
protected

Definition at line 41 of file InstructionSelector.h.

Referenced by setRemarkEmitter().

◆ TPC

const TargetPassConfig* llvm::InstructionSelector::TPC = nullptr
protected

Definition at line 40 of file InstructionSelector.h.

Referenced by setTargetPassConfig().


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