MergeFunctions.cpp File Reference

#include "llvm/Transforms/IPO.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Constants.h"
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/Pass.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include <map>
#include <vector>

Include dependency graph for MergeFunctions.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "mergefunc"
Functions
	STATISTIC (NumFunctionsMerged,"Number of functions merged")
	STATISTIC (NumMergeFails,"Number of identical function pairings not merged")
ModulePass *	llvm::createMergeFunctionsPass ()
static unsigned long	hash (const Function *F)
static bool	compare (const Value *V, const Value *U)
static bool	equals (const BasicBlock *BB1, const BasicBlock *BB2, DenseMap< const Value *, const Value * > &ValueMap, DenseMap< const Value *, const Value * > &SpeculationMap)
static bool	equals (const Function *F, const Function *G)
static bool	fold (std::vector< Function * > &FnVec, unsigned i, unsigned j)
static bool	hasAddressTaken (User *U)
Variables
static RegisterPass < MergeFunctions >	X ("mergefunc","Merge Functions")

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Define Documentation

#define DEBUG_TYPE   "mergefunc"

Definition at line 48 of file MergeFunctions.cpp.

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Function Documentation

static bool compare	(	const Value *	V,
		const Value *	U
	)			[static]

Definition at line 89 of file MergeFunctions.cpp.

References llvm::InlineAsm::getAsmString(), llvm::InlineAsm::getConstraintString(), and llvm::Value::getType().

Referenced by equals(), LowerSELECT_CC(), and llvm::APInt::tcDivide().

static bool equals	(	const Function *	F,
		const Function *	G
	)			[static]

Definition at line 187 of file MergeFunctions.cpp.

References llvm::Function::arg_begin(), llvm::Function::arg_end(), llvm::Function::arg_size(), llvm::DenseMap< KeyT, ValueT, KeyInfoT, ValueInfoT >::begin(), E, llvm::DenseMap< KeyT, ValueT, KeyInfoT, ValueInfoT >::end(), equals(), llvm::Function::getAttributes(), llvm::Function::getCallingConv(), llvm::Function::getEntryBlock(), llvm::Function::getGC(), llvm::GlobalValue::getSection(), llvm::GlobalValue::getType(), llvm::Function::hasGC(), and llvm::GlobalValue::hasSection().

static bool equals	(	const BasicBlock *	BB1,
		const BasicBlock *	BB2,
		DenseMap< const Value *, const Value * > &	ValueMap,
		DenseMap< const Value *, const Value * > &	SpeculationMap
	)			[static]

Definition at line 117 of file MergeFunctions.cpp.

References llvm::BasicBlock::begin(), compare(), llvm::BasicBlock::end(), FI, GE, llvm::Value::getType(), and llvm::Value::getValueID().

Referenced by equals().

static bool fold	(	std::vector< Function * > &	FnVec,
		unsigned	i,
		unsigned	j
	)			[static]

Definition at line 240 of file MergeFunctions.cpp.

References DOUT, llvm::Function::eraseFromParent(), llvm::GlobalValue::ExternalLinkage, F, G, llvm::GlobalValue::getAlignment(), llvm::GlobalValue::getLinkage(), llvm::Value::getName(), llvm::GlobalValue::getParent(), llvm::GlobalValue::getType(), llvm::GlobalValue::getVisibility(), llvm::GlobalValue::hasExternalLinkage(), llvm::GlobalValue::hasLocalLinkage(), llvm::GlobalValue::hasWeakLinkage(), llvm::GlobalValue::mayBeOverridden(), llvm::Value::replaceAllUsesWith(), llvm::GlobalAlias::setAliasee(), llvm::GlobalValue::setAlignment(), llvm::GlobalValue::setLinkage(), llvm::Value::setName(), llvm::GlobalValue::setVisibility(), std::swap(), and llvm::Value::takeName().

static bool hasAddressTaken

(

User *

U

)

[static]

Definition at line 297 of file MergeFunctions.cpp.

References E, llvm::Value::hasOneUse(), llvm::Value::use_begin(), and llvm::Value::use_end().

static unsigned long hash

(

const Function *

F

)

[static]

Definition at line 84 of file MergeFunctions.cpp.

References llvm::GlobalValue::getType(), and llvm::Function::size().

Referenced by llvm::DenseMapInfo< Expression >::getHashValue(), llvm::APInt::getHashValue(), and llvm::APFloat::getHashValue().

STATISTIC	(	NumMergeFails	,
		"Number of identical function pairings not merged"
	)

STATISTIC	(	NumFunctionsMerged	,
		"Number of functions merged"
	)

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Variable Documentation

char ID [static]

Definition at line 69 of file MergeFunctions.cpp.

RegisterPass<MergeFunctions> X("mergefunc","Merge Functions") [static]