GVNHoist.cpp File Reference

#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/GlobalsModRef.h"
#include "llvm/Analysis/IteratedDominanceFrontier.h"
#include "llvm/Analysis/MemoryDependenceAnalysis.h"
#include "llvm/Analysis/MemorySSA.h"
#include "llvm/Analysis/MemorySSAUpdater.h"
#include "llvm/Analysis/PostDominators.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Argument.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Scalar/GVN.h"
#include "llvm/Transforms/Utils/Local.h"
#include <algorithm>
#include <cassert>
#include <iterator>
#include <memory>
#include <utility>
#include <vector>

Go to the source code of this file.

Classes
struct	llvm::CHIArg
class	llvm::InsnInfo
class	llvm::LoadInfo
class	llvm::StoreInfo
class	llvm::CallInfo
class	llvm::GVNHoist

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

Macros
#define	DEBUG_TYPE   "gvn-hoist"

Typedefs
using	llvm::BBSideEffectsSet = DenseMap< const BasicBlock *, bool >
using	llvm::SmallVecInsn = SmallVector< Instruction *, 4 >
using	llvm::SmallVecImplInsn = SmallVectorImpl< Instruction * >
using	llvm::HoistingPointInfo = std::pair< BasicBlock *, SmallVecInsn >
using	llvm::HoistingPointList = SmallVector< HoistingPointInfo, 4 >
using	llvm::VNType = std::pair< unsigned, uintptr_t >
using	llvm::VNtoInsns = DenseMap< VNType, SmallVector< Instruction *, 4 > >
using	llvm::CHIIt = SmallVectorImpl< CHIArg >::iterator
using	llvm::CHIArgs = iterator_range< CHIIt >
using	llvm::OutValuesType = DenseMap< BasicBlock *, SmallVector< CHIArg, 2 > >
using	llvm::InValuesType = DenseMap< BasicBlock *, SmallVector< std::pair< VNType, Instruction * >, 2 > >

Enumerations
enum	: uintptr_t { llvm::InvalidVN = ~(uintptr_t)2 }

Functions
	STATISTIC (NumHoisted, "Number of instructions hoisted")
	STATISTIC (NumRemoved, "Number of instructions removed")
	STATISTIC (NumLoadsHoisted, "Number of loads hoisted")
	STATISTIC (NumLoadsRemoved, "Number of loads removed")
	STATISTIC (NumStoresHoisted, "Number of stores hoisted")
	STATISTIC (NumStoresRemoved, "Number of stores removed")
	STATISTIC (NumCallsHoisted, "Number of calls hoisted")
	STATISTIC (NumCallsRemoved, "Number of calls removed")

Variables
static cl::opt< int >	MaxHoistedThreshold ("gvn-max-hoisted", cl::Hidden, cl::init(-1), cl::desc("Max number of instructions to hoist " "(default unlimited = -1)"))
static cl::opt< int >	MaxNumberOfBBSInPath ("gvn-hoist-max-bbs", cl::Hidden, cl::init(4), cl::desc("Max number of basic blocks on the path between " "hoisting locations (default = 4, unlimited = -1)"))
static cl::opt< int >	MaxDepthInBB ("gvn-hoist-max-depth", cl::Hidden, cl::init(100), cl::desc("Hoist instructions from the beginning of the BB up to the " "maximum specified depth (default = 100, unlimited = -1)"))
static cl::opt< int >	MaxChainLength ("gvn-hoist-max-chain-length", cl::Hidden, cl::init(10), cl::desc("Maximum length of dependent chains to hoist " "(default = 10, unlimited = -1)"))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "gvn-hoist"

Definition at line 80 of file GVNHoist.cpp.

Function Documentation

STATISTIC() [1/8]

STATISTIC	(	NumCallsHoisted	,
		"Number of calls hoisted"
	)

STATISTIC() [2/8]

STATISTIC	(	NumCallsRemoved	,
		"Number of calls removed"
	)

STATISTIC() [3/8]

STATISTIC	(	NumHoisted	,
		"Number of instructions hoisted"
	)

STATISTIC() [4/8]

STATISTIC	(	NumLoadsHoisted	,
		"Number of loads hoisted"
	)

STATISTIC() [5/8]

STATISTIC	(	NumLoadsRemoved	,
		"Number of loads removed"
	)

STATISTIC() [6/8]

STATISTIC	(	NumRemoved	,
		"Number of instructions removed"
	)

STATISTIC() [7/8]

STATISTIC	(	NumStoresHoisted	,
		"Number of stores hoisted"
	)

STATISTIC() [8/8]

STATISTIC	(	NumStoresRemoved	,
		"Number of stores removed"
	)

Variable Documentation

MaxChainLength

cl::opt< int > MaxChainLength("gvn-hoist-max-chain-length", cl::Hidden, cl::init(10), cl::desc("Maximum length of dependent chains to hoist " "(default = 10, unlimited = -1)")) ( "gvn-hoist-max-chain-length"  , cl::Hidden  , cl::init(10)  , cl::desc("Maximum length of dependent chains to hoist " "(default = 10, unlimited = -1)")    )

static

Referenced by llvm::GVNHoist::run().

MaxDepthInBB

cl::opt< int > MaxDepthInBB("gvn-hoist-max-depth", cl::Hidden, cl::init(100), cl::desc("Hoist instructions from the beginning of the BB up to the " "maximum specified depth (default = 100, unlimited = -1)")) ( "gvn-hoist-max-depth"  , cl::Hidden  , cl::init(100)  , cl::desc("Hoist instructions from the beginning of the BB up to the " "maximum specified depth (default = 100, unlimited = -1)")    )

static

MaxHoistedThreshold

cl::opt< int > MaxHoistedThreshold("gvn-max-hoisted", cl::Hidden, cl::init(-1), cl::desc("Max number of instructions to hoist " "(default unlimited = -1)")) ( "gvn-max-hoisted"  , cl::Hidden  , cl::init(-1)  , cl::desc("Max number of instructions to hoist " "(default unlimited = -1)")    )

static

MaxNumberOfBBSInPath

cl::opt< int > MaxNumberOfBBSInPath("gvn-hoist-max-bbs", cl::Hidden, cl::init(4), cl::desc("Max number of basic blocks on the path between " "hoisting locations (default = 4, unlimited = -1)")) ( "gvn-hoist-max-bbs"  , cl::Hidden  , cl::init(4)  , cl::desc("Max number of basic blocks on the path between " "hoisting locations (default = 4, unlimited = -1)")    )

static