LLVM: llvm::ModuloScheduleExpander Class Reference

LLVM 10.0.0svn

The ModuloScheduleExpander takes a ModuloSchedule and expands it in-place, rewriting the old loop and inserting prologs and epilogs as required. More...

#include "llvm/CodeGen/ModuloSchedule.h"

Public Types
using	InstrChangesTy = DenseMap< MachineInstr *, std::pair< unsigned, int64_t > >

Public Member Functions
	ModuloScheduleExpander (MachineFunction &MF, ModuloSchedule &S, LiveIntervals &LIS, InstrChangesTy InstrChanges)
	Create a new ModuloScheduleExpander. More...

void	expand ()
	Performs the actual expansion. More...

void	cleanup ()
	Performs final cleanup after expansion. More...

MachineBasicBlock *	getRewrittenKernel ()
	Returns the newly rewritten kernel block, or nullptr if this was optimized away. More...

Detailed Description

The ModuloScheduleExpander takes a ModuloSchedule and expands it in-place, rewriting the old loop and inserting prologs and epilogs as required.

Definition at line 153 of file ModuloSchedule.h.

Member Typedef Documentation

◆ InstrChangesTy

using llvm::ModuloScheduleExpander::InstrChangesTy = DenseMap<MachineInstr *, std::pair<unsigned, int64_t> >

Definition at line 155 of file ModuloSchedule.h.

Constructor & Destructor Documentation

◆ ModuloScheduleExpander()

llvm::ModuloScheduleExpander::ModuloScheduleExpander	(	MachineFunction &	MF,
		ModuloSchedule &	S,
		LiveIntervals &	LIS,
		InstrChangesTy	InstrChanges
	)

inline

Create a new ModuloScheduleExpander.

InstrChanges Modifications to make to instructions with memory operands. FIXME: InstrChanges is opaque and is an implementation detail of an optimization in MachinePipeliner that crosses abstraction boundaries.

Definition at line 255 of file ModuloSchedule.h.

References cleanup(), and expand().

Member Function Documentation

◆ cleanup()

void ModuloScheduleExpander::cleanup ( )

Performs final cleanup after expansion.

Definition at line 181 of file ModuloSchedule.cpp.

References llvm::MachineBasicBlock::addSuccessor(), llvm::dbgs(), llvm::MachineBasicBlock::dump(), I, LLVM_DEBUG, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MachineBasicBlock::push_back(), llvm::HexagonInstrInfo::removeBranch(), llvm::MachineBasicBlock::replaceSuccessor(), TII, and llvm::MachineBasicBlock::transferSuccessors().

Referenced by parseSymbolString(), llvm::SwingSchedulerDAG::schedule(), and llvm::PeelingModuloScheduleExpander::validateAgainstModuloScheduleExpander().

◆ expand()

void ModuloScheduleExpander::expand ( )

Performs the actual expansion.

Definition at line 66 of file ModuloSchedule.cpp.

References llvm::HexagonInstrInfo::analyzeLoopForPipelining(), assert(), llvm::SmallVectorTemplateCommon< T >::back(), llvm::dbgs(), llvm::numbers::e, E, llvm::MachineOperand::getParent(), llvm::MachineOperand::getReg(), I, llvm::MachineOperand::isDef(), llvm::MachineOperand::isReg(), LLVM_DEBUG, llvm::max(), MI, MRI, llvm::MachineBasicBlock::push_back(), Reg, llvm::MachineBasicBlock::replaceSuccessor(), TII, llvm::MachineBasicBlock::transferSuccessors(), and UseMI.

Referenced by parseSymbolString(), llvm::SwingSchedulerDAG::schedule(), and llvm::PeelingModuloScheduleExpander::validateAgainstModuloScheduleExpander().

◆ getRewrittenKernel()

MachineBasicBlock* llvm::ModuloScheduleExpander::getRewrittenKernel ( )

inline

Returns the newly rewritten kernel block, or nullptr if this was optimized away.

Definition at line 268 of file ModuloSchedule.h.

Referenced by llvm::PeelingModuloScheduleExpander::validateAgainstModuloScheduleExpander().

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

include/llvm/CodeGen/ModuloSchedule.h
lib/CodeGen/ModuloSchedule.cpp