MachineCombiner.cpp File Reference

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/CodeGen/LazyMachineBlockFrequencyInfo.h"
#include "llvm/CodeGen/MachineCombinerPattern.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/MachineSizeOpts.h"
#include "llvm/CodeGen/MachineTraceMetrics.h"
#include "llvm/CodeGen/RegisterClassInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSchedule.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "machine-combiner"

Functions
	STATISTIC (NumInstCombined, "Number of machineinst combined")
	INITIALIZE_PASS_BEGIN (MachineCombiner, DEBUG_TYPE, "Machine InstCombiner", false, false) INITIALIZE_PASS_END(MachineCombiner
static void	insertDeleteInstructions (MachineBasicBlock *MBB, MachineInstr &MI, SmallVectorImpl< MachineInstr * > &InsInstrs, SmallVectorImpl< MachineInstr * > &DelInstrs, MachineTraceMetrics::Ensemble *TraceEnsemble, SparseSet< LiveRegUnit > &RegUnits, const TargetInstrInfo *TII, unsigned Pattern, bool IncrementalUpdate)
	Inserts InsInstrs and deletes DelInstrs.

Variables
static cl::opt< unsigned >	inc_threshold ("machine-combiner-inc-threshold", cl::Hidden, cl::desc("Incremental depth computation will be used for basic " "blocks with more instructions."), cl::init(500))
static cl::opt< bool >	dump_intrs ("machine-combiner-dump-subst-intrs", cl::Hidden, cl::desc("Dump all substituted intrs"), cl::init(false))
static cl::opt< bool >	VerifyPatternOrder ("machine-combiner-verify-pattern-order", cl::Hidden, cl::desc("Verify that the generated patterns are ordered by increasing latency"), cl::init(false))
	DEBUG_TYPE
Machine	InstCombiner
Machine	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "machine-combiner"

Definition at line 37 of file MachineCombiner.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	MachineCombiner	,
		DEBUG_TYPE	,
		"Machine InstCombiner"	,
		false	,
		false
	)

insertDeleteInstructions()

static void insertDeleteInstructions ( MachineBasicBlock *  MBB, MachineInstr &  MI, SmallVectorImpl< MachineInstr * > &  InsInstrs, SmallVectorImpl< MachineInstr * > &  DelInstrs, MachineTraceMetrics::Ensemble *  TraceEnsemble, SparseSet< LiveRegUnit > &  RegUnits, const TargetInstrInfo *  TII, unsigned  Pattern, bool  IncrementalUpdate  )

static

Inserts InsInstrs and deletes DelInstrs.

Incrementally updates instruction depths if requested.

Parameters

MBB	basic block to insert instructions in
MI	current machine instruction
InsInstrs	new instructions to insert in MBB
DelInstrs	instruction to delete from MBB
TraceEnsemble	is a pointer to the machine trace information
RegUnits	set of live registers, needed to compute instruction depths
TII	is target instruction info, used to call target hook
Pattern	is used to call target hook finalizeInsInstrs
IncrementalUpdate	if true, compute instruction depths incrementally, otherwise invalidate the trace

Definition at line 484 of file MachineCombiner.cpp.

References llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::begin(), llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::end(), llvm::SparseSet< ValueT, KeyFunctorT, SparseT >::erase(), I, llvm::MachineBasicBlock::insert(), llvm::MachineTraceMetrics::Ensemble::invalidate(), MBB, MI, TII, and llvm::MachineTraceMetrics::Ensemble::updateDepth().

STATISTIC()

STATISTIC	(	NumInstCombined	,
		"Number of machineinst combined"
	)

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 137 of file MachineCombiner.cpp.

dump_intrs

cl::opt< bool > dump_intrs("machine-combiner-dump-subst-intrs", cl::Hidden, cl::desc("Dump all substituted intrs"), cl::init(false)) ( "machine-combiner-dump-subst-intrs"  , cl::Hidden  , cl::desc("Dump all substituted intrs")  , cl::init(false)    )

static

false

Machine false

Definition at line 138 of file MachineCombiner.cpp.

inc_threshold

cl::opt< unsigned > inc_threshold("machine-combiner-inc-threshold", cl::Hidden, cl::desc("Incremental depth computation will be used for basic " "blocks with more instructions."), cl::init(500)) ( "machine-combiner-inc-threshold"  , cl::Hidden  , cl::desc("Incremental depth computation will be used for basic " "blocks with more instructions.")  , cl::init(500)    )

static

InstCombiner

Machine InstCombiner

Definition at line 137 of file MachineCombiner.cpp.

VerifyPatternOrder

cl::opt< bool > VerifyPatternOrder("machine-combiner-verify-pattern-order", cl::Hidden, cl::desc( "Verify that the generated patterns are ordered by increasing latency"), cl::init(false)) ( "machine-combiner-verify-pattern-order"  , cl::Hidden  , cl::desc( "Verify that the generated patterns are ordered by increasing latency")  , cl::init(false)    )

static