CodeLayout.cpp File Reference

#include "llvm/Transforms/Utils/CodeLayout.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include <cmath>
#include <set>

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	DEBUG_TYPE   "code-layout"

Functions
cl::opt< bool >	llvm::EnableExtTspBlockPlacement ("enable-ext-tsp-block-placement", cl::Hidden, cl::init(false), cl::desc("Enable machine block placement based on the ext-tsp model, " "optimizing I-cache utilization."))
cl::opt< bool >	llvm::ApplyExtTspWithoutProfile ("ext-tsp-apply-without-profile", cl::desc("Whether to apply ext-tsp placement for instances w/o profile"), cl::init(true), cl::Hidden)

Variables
static cl::opt< double >	ForwardWeightCond ("ext-tsp-forward-weight-cond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of conditional forward jumps for ExtTSP value"))
static cl::opt< double >	ForwardWeightUncond ("ext-tsp-forward-weight-uncond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of unconditional forward jumps for ExtTSP value"))
static cl::opt< double >	BackwardWeightCond ("ext-tsp-backward-weight-cond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of conditional backward jumps for ExtTSP value"))
static cl::opt< double >	BackwardWeightUncond ("ext-tsp-backward-weight-uncond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of unconditional backward jumps for ExtTSP value"))
static cl::opt< double >	FallthroughWeightCond ("ext-tsp-fallthrough-weight-cond", cl::ReallyHidden, cl::init(1.0), cl::desc("The weight of conditional fallthrough jumps for ExtTSP value"))
static cl::opt< double >	FallthroughWeightUncond ("ext-tsp-fallthrough-weight-uncond", cl::ReallyHidden, cl::init(1.05), cl::desc("The weight of unconditional fallthrough jumps for ExtTSP value"))
static cl::opt< unsigned >	ForwardDistance ("ext-tsp-forward-distance", cl::ReallyHidden, cl::init(1024), cl::desc("The maximum distance (in bytes) of a forward jump for ExtTSP"))
static cl::opt< unsigned >	BackwardDistance ("ext-tsp-backward-distance", cl::ReallyHidden, cl::init(640), cl::desc("The maximum distance (in bytes) of a backward jump for ExtTSP"))
static cl::opt< unsigned >	MaxChainSize ("ext-tsp-max-chain-size", cl::ReallyHidden, cl::init(4096), cl::desc("The maximum size of a chain to create."))
static cl::opt< unsigned >	ChainSplitThreshold ("ext-tsp-chain-split-threshold", cl::ReallyHidden, cl::init(128), cl::desc("The maximum size of a chain to apply splitting"))
static cl::opt< bool >	EnableChainSplitAlongJumps ("ext-tsp-enable-chain-split-along-jumps", cl::ReallyHidden, cl::init(true), cl::desc("The maximum size of a chain to apply splitting"))
static cl::opt< unsigned >	CacheEntries ("cds-cache-entries", cl::ReallyHidden, cl::desc("The size of the cache"))
static cl::opt< unsigned >	CacheSize ("cds-cache-size", cl::ReallyHidden, cl::desc("The size of a line in the cache"))
static cl::opt< double >	DistancePower ("cds-distance-power", cl::ReallyHidden, cl::desc("The power exponent for the distance-based locality"))
static cl::opt< double >	FrequencyScale ("cds-frequency-scale", cl::ReallyHidden, cl::desc("The scale factor for the frequency-based locality"))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "code-layout"

Definition at line 53 of file CodeLayout.cpp.

Variable Documentation

BackwardDistance

cl::opt< unsigned > BackwardDistance("ext-tsp-backward-distance", cl::ReallyHidden, cl::init(640), cl::desc("The maximum distance (in bytes) of a backward jump for ExtTSP")) ( "ext-tsp-backward-distance"  , cl::ReallyHidden  , cl::init(640)  , cl::desc("The maximum distance (in bytes) of a backward jump for ExtTSP")    )

static

BackwardWeightCond

cl::opt< double > BackwardWeightCond("ext-tsp-backward-weight-cond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of conditional backward jumps for ExtTSP value")) ( "ext-tsp-backward-weight-cond"  , cl::ReallyHidden  , cl::init(0.1)  , cl::desc("The weight of conditional backward jumps for ExtTSP value")    )

static

BackwardWeightUncond

cl::opt< double > BackwardWeightUncond("ext-tsp-backward-weight-uncond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of unconditional backward jumps for ExtTSP value")) ( "ext-tsp-backward-weight-uncond"  , cl::ReallyHidden  , cl::init(0.1)  , cl::desc("The weight of unconditional backward jumps for ExtTSP value")    )

static

CacheEntries

cl::opt< unsigned > CacheEntries("cds-cache-entries", cl::ReallyHidden, cl::desc("The size of the cache")) ( "cds-cache-entries"  , cl::ReallyHidden  , cl::desc("The size of the cache")    )

static

Referenced by llvm::codelayout::computeCacheDirectedLayout(), and llvm::InterferenceCache::getMaxCursors().

CacheSize

cl::opt< unsigned > CacheSize("cds-cache-size", cl::ReallyHidden, cl::desc("The size of a line in the cache")) ( "cds-cache-size"  , cl::ReallyHidden  , cl::desc("The size of a line in the cache")    )

static

Referenced by llvm::codelayout::computeCacheDirectedLayout().

ChainSplitThreshold

cl::opt< unsigned > ChainSplitThreshold("ext-tsp-chain-split-threshold", cl::ReallyHidden, cl::init(128), cl::desc("The maximum size of a chain to apply splitting")) ( "ext-tsp-chain-split-threshold"  , cl::ReallyHidden  , cl::init(128)  , cl::desc("The maximum size of a chain to apply splitting")    )

static

DistancePower

cl::opt< double > DistancePower("cds-distance-power", cl::ReallyHidden, cl::desc("The power exponent for the distance-based locality")) ( "cds-distance-power"  , cl::ReallyHidden  , cl::desc("The power exponent for the distance-based locality")    )

static

Referenced by llvm::codelayout::computeCacheDirectedLayout().

EnableChainSplitAlongJumps

cl::opt< bool > EnableChainSplitAlongJumps("ext-tsp-enable-chain-split-along-jumps", cl::ReallyHidden, cl::init(true), cl::desc("The maximum size of a chain to apply splitting")) ( "ext-tsp-enable-chain-split-along-jumps"  , cl::ReallyHidden  , cl::init(true)  , cl::desc("The maximum size of a chain to apply splitting")    )

static

FallthroughWeightCond

cl::opt< double > FallthroughWeightCond("ext-tsp-fallthrough-weight-cond", cl::ReallyHidden, cl::init(1.0), cl::desc("The weight of conditional fallthrough jumps for ExtTSP value")) ( "ext-tsp-fallthrough-weight-cond"  , cl::ReallyHidden  , cl::init(1.0)  , cl::desc("The weight of conditional fallthrough jumps for ExtTSP value")    )

static

FallthroughWeightUncond

cl::opt< double > FallthroughWeightUncond("ext-tsp-fallthrough-weight-uncond", cl::ReallyHidden, cl::init(1.05), cl::desc("The weight of unconditional fallthrough jumps for ExtTSP value")) ( "ext-tsp-fallthrough-weight-uncond"  , cl::ReallyHidden  , cl::init(1.05)  , cl::desc("The weight of unconditional fallthrough jumps for ExtTSP value")    )

static

ForwardDistance

cl::opt< unsigned > ForwardDistance("ext-tsp-forward-distance", cl::ReallyHidden, cl::init(1024), cl::desc("The maximum distance (in bytes) of a forward jump for ExtTSP")) ( "ext-tsp-forward-distance"  , cl::ReallyHidden  , cl::init(1024)  , cl::desc("The maximum distance (in bytes) of a forward jump for ExtTSP")    )

static

ForwardWeightCond

cl::opt< double > ForwardWeightCond("ext-tsp-forward-weight-cond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of conditional forward jumps for ExtTSP value")) ( "ext-tsp-forward-weight-cond"  , cl::ReallyHidden  , cl::init(0.1)  , cl::desc("The weight of conditional forward jumps for ExtTSP value")    )

static

ForwardWeightUncond

cl::opt< double > ForwardWeightUncond("ext-tsp-forward-weight-uncond", cl::ReallyHidden, cl::init(0.1), cl::desc("The weight of unconditional forward jumps for ExtTSP value")) ( "ext-tsp-forward-weight-uncond"  , cl::ReallyHidden  , cl::init(0.1)  , cl::desc("The weight of unconditional forward jumps for ExtTSP value")    )

static

FrequencyScale

cl::opt< double > FrequencyScale("cds-frequency-scale", cl::ReallyHidden, cl::desc("The scale factor for the frequency-based locality")) ( "cds-frequency-scale"  , cl::ReallyHidden  , cl::desc("The scale factor for the frequency-based locality")    )

static

Referenced by llvm::codelayout::computeCacheDirectedLayout().

MaxChainSize

cl::opt< unsigned > MaxChainSize("ext-tsp-max-chain-size", cl::ReallyHidden, cl::init(4096), cl::desc("The maximum size of a chain to create.")) ( "ext-tsp-max-chain-size"  , cl::ReallyHidden  , cl::init(4096)  , cl::desc("The maximum size of a chain to create.")    )

static