Constants.cpp File Reference

#include "llvm/IR/Constants.h"
#include "ConstantFold.h"
#include "LLVMContextImpl.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/GetElementPtrTypeIterator.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstdarg>

Include dependency graph for Constants.cpp:

Go to the source code of this file.

Functions
static bool	canTrapImpl (const Constant *C, SmallPtrSetImpl< const ConstantExpr * > &NonTrappingOps)
static bool	ConstHasGlobalValuePredicate (const Constant *C, bool(*Predicate)(const GlobalValue *))
	Check if C contains a GlobalValue for which Predicate is true.
static bool	removeDeadUsersOfConstant (const Constant *C)
static const fltSemantics *	TypeToFloatSemantics (Type *Ty)
template<typename ItTy , typename EltTy >
static bool	rangeOnlyContains (ItTy Start, ItTy End, EltTy Elt)
static Constant *	getFoldedCast (Instruction::CastOps opc, Constant *C, Type *Ty, bool OnlyIfReduced=false)
static bool	isAllZeros (StringRef Arr)
	isAllZeros - return true if the array is empty or all zeros.

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Function Documentation

static bool canTrapImpl	(	const Constant *	C,
		SmallPtrSetImpl< const ConstantExpr * > &	NonTrappingOps
	)		[static]

Definition at line 308 of file Constants.cpp.

References llvm::CallingConv::C, llvm::WinEH::CE, llvm::dyn_cast(), llvm::User::getNumOperands(), llvm::Value::getType(), llvm::SmallPtrSetImpl< PtrType >::insert(), and llvm::Type::isFirstClassType().

Referenced by llvm::Constant::canTrap().

static bool ConstHasGlobalValuePredicate	(	const Constant *	C,
		bool(*)(const GlobalValue *)	Predicate
	)		[static]

Check if C contains a GlobalValue for which Predicate is true.

Definition at line 350 of file Constants.cpp.

References llvm::dyn_cast(), llvm::SmallVectorBase::empty(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::User::operands(), llvm::SmallVectorImpl< T >::pop_back_val(), and llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back().

Referenced by llvm::Constant::isDLLImportDependent(), and llvm::Constant::isThreadDependent().

static Constant* getFoldedCast	(	Instruction::CastOps	opc,
		Constant *	C,
		Type *	Ty,
		bool	OnlyIfReduced = false
	)		[static]

This is a utility function to handle folding of casts and lookup of the cast in the ExprConstants map. It is used by the various get* methods below.

Definition at line 1533 of file Constants.cpp.

References llvm::ConstantFoldCastInstruction(), llvm::LLVMContextImpl::ExprConstants, R600_InstFlag::FC, llvm::Type::getContext(), llvm::ConstantUniqueMap< ConstantClass >::getOrCreate(), llvm::Type::isFirstClassType(), and llvm::LLVMContext::pImpl.

Referenced by llvm::ConstantExpr::getAddrSpaceCast(), llvm::ConstantExpr::getBitCast(), llvm::ConstantExpr::getFPExtend(), llvm::ConstantExpr::getFPToSI(), llvm::ConstantExpr::getFPToUI(), llvm::ConstantExpr::getFPTrunc(), llvm::ConstantExpr::getIntToPtr(), llvm::ConstantExpr::getPtrToInt(), llvm::ConstantExpr::getSExt(), llvm::ConstantExpr::getSIToFP(), llvm::ConstantExpr::getTrunc(), llvm::ConstantExpr::getUIToFP(), and llvm::ConstantExpr::getZExt().

static bool isAllZeros

(

StringRef

Arr

)

[static]

isAllZeros - return true if the array is empty or all zeros.

Definition at line 2420 of file Constants.cpp.

References llvm::StringRef::begin(), llvm::StringRef::end(), and I.

Referenced by llvm::ConstantDataSequential::getImpl(), and llvm::ConstantStruct::replaceUsesOfWithOnConstant().

template<typename ItTy , typename EltTy >

static bool rangeOnlyContains	(	ItTy	Start,
		ItTy	End,
		EltTy	Elt
	)		[static]

Definition at line 809 of file Constants.cpp.

static bool removeDeadUsersOfConstant

(

const Constant *

C

)

[static]

removeDeadUsersOfConstant - If the specified constantexpr is dead, remove it. This involves recursively eliminating any dead users of the constantexpr.

Definition at line 457 of file Constants.cpp.

References llvm::CallingConv::C, llvm::dyn_cast(), llvm::Value::use_empty(), and llvm::Value::user_back().

Referenced by llvm::Constant::removeDeadConstantUsers().

static const fltSemantics* TypeToFloatSemantics

(

Type *

Ty

)

[static]

Definition at line 617 of file Constants.cpp.

References llvm::APFloat::IEEEdouble, llvm::APFloat::IEEEhalf, llvm::APFloat::IEEEquad, llvm::APFloat::IEEEsingle, llvm::Type::isDoubleTy(), llvm::Type::isFloatTy(), llvm::Type::isFP128Ty(), llvm::Type::isHalfTy(), llvm::Type::isPPC_FP128Ty(), llvm::Type::isX86_FP80Ty(), llvm::APFloat::PPCDoubleDouble, and llvm::APFloat::x87DoubleExtended.

Referenced by llvm::ConstantFP::ConstantFP(), llvm::ConstantFP::get(), llvm::ConstantFP::getInfinity(), and llvm::ConstantFP::getNegativeZero().