A trace ensemble is a collection of traces selected using the same strategy, for example 'minimum resource height'. More...

#include "llvm/CodeGen/MachineTraceMetrics.h"

Public Member Functions
virtual	~Ensemble ()
virtual const char *	getName () const =0
void	print (raw_ostream &) const
void	dump () const
void	invalidate (const MachineBasicBlock *MBB)
	Invalidate traces through BadMBB.
void	verify () const
Trace	getTrace (const MachineBasicBlock *MBB)
	Get the trace that passes through MBB.
void	updateDepth (TraceBlockInfo &TBI, const MachineInstr &, SparseSet< LiveRegUnit > &RegUnits)
	Updates the depth of an machine instruction, given RegUnits.
void	updateDepth (const MachineBasicBlock *, const MachineInstr &, SparseSet< LiveRegUnit > &RegUnits)
void	updateDepths (MachineBasicBlock::iterator Start, MachineBasicBlock::iterator End, SparseSet< LiveRegUnit > &RegUnits)
	Updates the depth of the instructions from Start to End.

Protected Member Functions
	Ensemble (MachineTraceMetrics *)
virtual const MachineBasicBlock *	pickTracePred (const MachineBasicBlock *)=0
virtual const MachineBasicBlock *	pickTraceSucc (const MachineBasicBlock *)=0
const MachineLoop *	getLoopFor (const MachineBasicBlock *) const
const TraceBlockInfo *	getDepthResources (const MachineBasicBlock *) const
const TraceBlockInfo *	getHeightResources (const MachineBasicBlock *) const
ArrayRef< unsigned >	getProcResourceDepths (unsigned MBBNum) const
	Get an array of processor resource depths for MBB.
ArrayRef< unsigned >	getProcResourceHeights (unsigned MBBNum) const
	Get an array of processor resource heights for MBB.

Protected Attributes
MachineTraceMetrics &	MTM

Friends
class	Trace

Detailed Description

A trace ensemble is a collection of traces selected using the same strategy, for example 'minimum resource height'.

There is one trace for every block in the function.

Definition at line 339 of file MachineTraceMetrics.h.

Constructor & Destructor Documentation

◆ Ensemble()

MachineTraceMetrics::Ensemble::Ensemble ( MachineTraceMetrics * ct )

explicitprotected

Definition at line 170 of file MachineTraceMetrics.cpp.

References llvm::MachineTraceMetrics::MachineTraceMetrics(), and MTM.

◆ ~Ensemble()

MachineTraceMetrics::Ensemble::~Ensemble ( )

virtualdefault

Member Function Documentation

◆ dump()

void llvm::MachineTraceMetrics::Ensemble::dump ( ) const

inline

Definition at line 374 of file MachineTraceMetrics.h.

References llvm::dbgs(), and print().

◆ getDepthResources()

const MachineTraceMetrics::TraceBlockInfo * MachineTraceMetrics::Ensemble::getDepthResources ( const MachineBasicBlock * MBB ) const

protected

Definition at line 255 of file MachineTraceMetrics.cpp.

References llvm::MachineTraceMetrics::TraceBlockInfo::hasValidDepth(), and MBB.

◆ getHeightResources()

const MachineTraceMetrics::TraceBlockInfo * MachineTraceMetrics::Ensemble::getHeightResources ( const MachineBasicBlock * MBB ) const

protected

Definition at line 264 of file MachineTraceMetrics.cpp.

References llvm::MachineTraceMetrics::TraceBlockInfo::hasValidHeight(), and MBB.

◆ getLoopFor()

const MachineLoop * MachineTraceMetrics::Ensemble::getLoopFor ( const MachineBasicBlock * MBB ) const

protected

Definition at line 182 of file MachineTraceMetrics.cpp.

References MBB, and MTM.

Referenced by verify().

◆ getName()

virtual const char * llvm::MachineTraceMetrics::Ensemble::getName ( ) const

pure virtual

◆ getProcResourceDepths()

ArrayRef< unsigned > MachineTraceMetrics::Ensemble::getProcResourceDepths ( unsigned MBBNum ) const

protected

Get an array of processor resource depths for MBB.

Indexed by processor resource kind, this array contains the scaled processor resources consumed by all blocks preceding MBB in its trace. It does not include instructions in MBB.

Compare TraceBlockInfo::InstrDepth.

Definition at line 277 of file MachineTraceMetrics.cpp.

References llvm::ArrayRef(), assert(), and MTM.

◆ getProcResourceHeights()

ArrayRef< unsigned > MachineTraceMetrics::Ensemble::getProcResourceHeights ( unsigned MBBNum ) const

protected

Get an array of processor resource heights for MBB.

Indexed by processor resource kind, this array contains the scaled processor resources consumed by this block and all blocks following it in its trace.

Compare TraceBlockInfo::InstrHeight.

Definition at line 290 of file MachineTraceMetrics.cpp.

References llvm::ArrayRef(), assert(), and MTM.

◆ getTrace()

MachineTraceMetrics::Trace MachineTraceMetrics::Ensemble::getTrace ( const MachineBasicBlock * MBB )

Get the trace that passes through MBB.

The trace is computed on demand.

Definition at line 1192 of file MachineTraceMetrics.cpp.

References llvm::MachineTraceMetrics::TraceBlockInfo::hasValidDepth(), llvm::MachineTraceMetrics::TraceBlockInfo::hasValidHeight(), llvm::MachineTraceMetrics::TraceBlockInfo::HasValidInstrDepths, llvm::MachineTraceMetrics::TraceBlockInfo::HasValidInstrHeights, MBB, and Trace.

◆ invalidate()

void MachineTraceMetrics::Ensemble::invalidate ( const MachineBasicBlock * MBB )

Invalidate traces through BadMBB.

Definition at line 570 of file MachineTraceMetrics.cpp.

References assert(), llvm::dbgs(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), getName(), llvm::MachineBasicBlock::getNumber(), llvm::MachineTraceMetrics::TraceBlockInfo::hasValidDepth(), llvm::MachineTraceMetrics::TraceBlockInfo::hasValidHeight(), I, llvm::MachineTraceMetrics::TraceBlockInfo::invalidateDepth(), llvm::MachineTraceMetrics::TraceBlockInfo::invalidateHeight(), llvm::MachineBasicBlock::isPredecessor(), llvm::MachineBasicBlock::isSuccessor(), LLVM_DEBUG, MBB, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::MachineTraceMetrics::TraceBlockInfo::Pred, llvm::printMBBReference(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::MachineTraceMetrics::TraceBlockInfo::Succ.

Referenced by insertDeleteInstructions().

◆ pickTracePred()

virtual const MachineBasicBlock * llvm::MachineTraceMetrics::Ensemble::pickTracePred ( const MachineBasicBlock * )

protectedpure virtual

◆ pickTraceSucc()

virtual const MachineBasicBlock * llvm::MachineTraceMetrics::Ensemble::pickTraceSucc ( const MachineBasicBlock * )

protectedpure virtual

◆ print()

void MachineTraceMetrics::Ensemble::print ( raw_ostream & OS ) const

Definition at line 1321 of file MachineTraceMetrics.cpp.

References getName().

Referenced by dump(), and llvm::operator<<().

◆ updateDepth() [1/2]

void MachineTraceMetrics::Ensemble::updateDepth	(	const MachineBasicBlock *	MBB,
		const MachineInstr &	UseMI,
		SparseSet< LiveRegUnit > &	RegUnits )

Definition at line 861 of file MachineTraceMetrics.cpp.

References MBB, updateDepth(), and UseMI.

◆ updateDepth() [2/2]

void MachineTraceMetrics::Ensemble::updateDepth	(	MachineTraceMetrics::TraceBlockInfo &	TBI,
		const MachineInstr &	UseMI,
		SparseSet< LiveRegUnit > &	RegUnits )

Updates the depth of an machine instruction, given RegUnits.

Definition at line 822 of file MachineTraceMetrics.cpp.

References assert(), llvm::MachineTraceMetrics::TraceBlockInfo::CriticalPath, llvm::dbgs(), llvm::MachineTraceMetrics::InstrCycles::Depth, getDataDeps(), getPHIDeps(), llvm::MachineTraceMetrics::TraceBlockInfo::HasValidInstrDepths, llvm::MachineTraceMetrics::TraceBlockInfo::HasValidInstrHeights, llvm::MachineTraceMetrics::InstrCycles::Height, llvm::MachineTraceMetrics::TraceBlockInfo::isUsefulDominator(), LLVM_DEBUG, MTM, llvm::MachineTraceMetrics::TraceBlockInfo::Pred, updatePhysDepsDownwards(), and UseMI.

Referenced by insertDeleteInstructions(), updateDepth(), and updateDepths().

◆ updateDepths()

void MachineTraceMetrics::Ensemble::updateDepths	(	MachineBasicBlock::iterator	Start,
		MachineBasicBlock::iterator	End,
		SparseSet< LiveRegUnit > &	RegUnits )

Updates the depth of the instructions from Start to End.

Definition at line 867 of file MachineTraceMetrics.cpp.

References updateDepth().

◆ verify()

void MachineTraceMetrics::Ensemble::verify ( ) const

Definition at line 633 of file MachineTraceMetrics.cpp.

References assert(), llvm::LoopBase< BlockT, LoopT >::getHeader(), getLoopFor(), llvm::MachineBasicBlock::getNumber(), llvm::MachineTraceMetrics::TraceBlockInfo::hasValidDepth(), llvm::MachineTraceMetrics::TraceBlockInfo::hasValidHeight(), MBB, MTM, llvm::MachineTraceMetrics::TraceBlockInfo::Pred, and llvm::MachineTraceMetrics::TraceBlockInfo::Succ.

◆ Trace

friend class Trace

friend

Definition at line 340 of file MachineTraceMetrics.h.

References DefMI, and Trace.

Referenced by getTrace(), and Trace.

Member Data Documentation

◆ MTM

MachineTraceMetrics& llvm::MachineTraceMetrics::Ensemble::MTM

protected

Definition at line 357 of file MachineTraceMetrics.h.

Referenced by Ensemble(), getLoopFor(), getProcResourceDepths(), getProcResourceHeights(), updateDepth(), and verify().

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

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

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ Ensemble()

◆ ~Ensemble()

Member Function Documentation

◆ dump()

◆ getDepthResources()

◆ getHeightResources()

◆ getLoopFor()

◆ getName()

◆ getProcResourceDepths()

◆ getProcResourceHeights()

◆ getTrace()

◆ invalidate()

◆ pickTracePred()

◆ pickTraceSucc()

◆ print()

◆ updateDepth() [1/2]

◆ updateDepth() [2/2]

◆ updateDepths()

◆ verify()

Friends And Related Symbol Documentation

◆ Trace

Member Data Documentation

◆ MTM