llvm::RegBankSelect::InstrInsertPoint Class Reference

Insertion point before or after an instruction. More...

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

Inheritance diagram for llvm::RegBankSelect::InstrInsertPoint:

Public Member Functions
	InstrInsertPoint (MachineInstr &Instr, bool Before=true)
	Create an insertion point before (Before=true) or after Instr.
bool	isSplit () const override
	Does this point involve splitting an edge or block?
uint64_t	frequency (const Pass &P) const override
	Frequency of the insertion point.
bool	canMaterialize () const override
	Check whether this insertion point can be materialized.
Public Member Functions inherited from llvm::RegBankSelect::InsertPoint
virtual	~InsertPoint ()=default
MachineBasicBlock::iterator	getPoint ()
	The first call to this method will cause the splitting to happen if need be, then sub sequent calls just return the iterator to that point.
MachineBasicBlock &	getInsertMBB ()
	The first call to this method will cause the splitting to happen if need be, then sub sequent calls just return the basic block that contains the insertion point.
MachineBasicBlock::iterator	insert (MachineInstr &MI)
	Insert MI in the just before getPoint()

Additional Inherited Members
Protected Attributes inherited from llvm::RegBankSelect::InsertPoint
bool	WasMaterialized = false
	Tell if the insert point has already been materialized.

Detailed Description

Insertion point before or after an instruction.

Definition at line 204 of file RegBankSelect.h.

Constructor & Destructor Documentation

InstrInsertPoint()

RegBankSelect::InstrInsertPoint::InstrInsertPoint	(	MachineInstr &	Instr,
		bool	Before = true )

Create an insertion point before (Before=true) or after Instr.

Definition at line 876 of file RegBankSelect.cpp.

References assert().

Member Function Documentation

canMaterialize()

bool llvm::RegBankSelect::InstrInsertPoint::canMaterialize ( ) const

inlineoverridevirtual

Check whether this insertion point can be materialized.

As soon as getPoint is called and thus, the point materialized calling this method does not make sense.

Reimplemented from llvm::RegBankSelect::InsertPoint.

Definition at line 233 of file RegBankSelect.h.

frequency()

uint64_t RegBankSelect::InstrInsertPoint::frequency ( const Pass & P ) const

overridevirtual

Frequency of the insertion point.

P is used to access the various analysis that will help to get that information, like MachineBlockFrequencyInfo. If P does not contain enough to return the actual frequency, this returns 1.

Reimplemented from llvm::RegBankSelect::InsertPoint.

Definition at line 918 of file RegBankSelect.cpp.

References llvm::MachineBlockFrequencyInfo::getBlockFreq(), llvm::BlockFrequency::getFrequency(), llvm::MBFIWrapper::getMBFI(), and P.

isSplit()

bool RegBankSelect::InstrInsertPoint::isSplit ( ) const

overridevirtual

Does this point involve splitting an edge or block?

As soon as getPoint is called and thus, the point materialized, the point will not require splitting anymore, i.e., this will return false.

Reimplemented from llvm::RegBankSelect::InsertPoint.

Definition at line 909 of file RegBankSelect.cpp.

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

• include/llvm/CodeGen/GlobalISel/RegBankSelect.h
• lib/CodeGen/GlobalISel/RegBankSelect.cpp