Simple wrapper observer that takes several observers, and calls each one for each event. More...

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

Inheritance diagram for llvm::GISelObserverWrapper:

Public Member Functions
	GISelObserverWrapper ()=default
	GISelObserverWrapper (ArrayRef< GISelChangeObserver * > Obs)
void	addObserver (GISelChangeObserver *O)
void	removeObserver (GISelChangeObserver *O)
void	clearObservers ()
void	erasingInstr (MachineInstr &MI) override
	An instruction is about to be erased.
void	createdInstr (MachineInstr &MI) override
	An instruction has been created and inserted into the function.
void	changingInstr (MachineInstr &MI) override
	This instruction is about to be mutated in some way.
void	changedInstr (MachineInstr &MI) override
	This instruction was mutated in some way.
void	MF_HandleInsertion (MachineInstr &MI) override
	Callback after an insertion. This should not modify the MI directly.
void	MF_HandleRemoval (MachineInstr &MI) override
	Callback before a removal. This should not modify the MI directly.
Public Member Functions inherited from llvm::MachineFunction::Delegate
virtual	~Delegate ()=default
virtual void	MF_HandleChangeDesc (MachineInstr &MI, const MCInstrDesc &TID)
	Callback before changing MCInstrDesc.
Public Member Functions inherited from llvm::GISelChangeObserver
virtual	~GISelChangeObserver ()=default
LLVM_ABI void	changingAllUsesOfReg (const MachineRegisterInfo &MRI, Register Reg)
	All the instructions using the given register are being changed.
LLVM_ABI void	finishedChangingAllUsesOfReg ()
	All instructions reported as changing by changingAllUsesOfReg() have finished being changed.

Detailed Description

Simple wrapper observer that takes several observers, and calls each one for each event.

If there are multiple observers (say CSE, Legalizer, Combiner), it's sufficient to register this to the machine function as the delegate.

Definition at line 67 of file GISelChangeObserver.h.

Constructor & Destructor Documentation

◆ GISelObserverWrapper() [1/2]

llvm::GISelObserverWrapper::GISelObserverWrapper ( )

default

◆ GISelObserverWrapper() [2/2]

llvm::GISelObserverWrapper::GISelObserverWrapper ( ArrayRef< GISelChangeObserver * > Obs )

inline

Definition at line 73 of file GISelChangeObserver.h.

Member Function Documentation

◆ addObserver()

void llvm::GISelObserverWrapper::addObserver ( GISelChangeObserver * O )

inline

Definition at line 75 of file GISelChangeObserver.h.

Referenced by llvm::Legalizer::legalizeMachineFunction(), llvm::IRTranslator::runOnMachineFunction(), and llvm::InstructionSelect::selectMachineFunction().

◆ changedInstr()

void llvm::GISelObserverWrapper::changedInstr ( MachineInstr & MI )

inlineoverridevirtual

This instruction was mutated in some way.

Implements llvm::GISelChangeObserver.

Definition at line 99 of file GISelChangeObserver.h.

References MI.

Referenced by llvm::LegalizationArtifactCombiner::tryCombineInstruction(), and llvm::LegalizationArtifactCombiner::tryCombineZExt().

◆ changingInstr()

void llvm::GISelObserverWrapper::changingInstr ( MachineInstr & MI )

inlineoverridevirtual

This instruction is about to be mutated in some way.

Implements llvm::GISelChangeObserver.

Definition at line 95 of file GISelChangeObserver.h.

References MI.

Referenced by llvm::LegalizationArtifactCombiner::tryCombineZExt().

◆ clearObservers()

void llvm::GISelObserverWrapper::clearObservers ( )

inline

Definition at line 84 of file GISelChangeObserver.h.

◆ createdInstr()

void llvm::GISelObserverWrapper::createdInstr ( MachineInstr & MI )

inlineoverridevirtual

An instruction has been created and inserted into the function.

Note that the instruction might not be a fully fledged instruction at this point and won't be if the MachineFunction::Delegate is calling it. This is because the delegate only sees the construction of the MachineInstr before operands have been added.

Implements llvm::GISelChangeObserver.

Definition at line 91 of file GISelChangeObserver.h.

References MI.

Referenced by MF_HandleInsertion().