clang::CodeGen::ConstantEmitter Class Reference

#include "/opt/doxygen-docs/src/llvm/tools/clang/lib/CodeGen/ConstantEmitter.h"

Collaboration diagram for clang::CodeGen::ConstantEmitter:

Public Member Functions
	ConstantEmitter (CodeGenModule &CGM, CodeGenFunction *CGF=nullptr)
	ConstantEmitter (CodeGenFunction &CGF)
	Initialize this emission in the context of the given function. More...
	ConstantEmitter (const ConstantEmitter &other)=delete
ConstantEmitter &	operator= (const ConstantEmitter &other)=delete
	~ConstantEmitter ()
bool	isAbstract () const
	Is the current emission context abstract? More...
llvm::Constant *	tryEmitForInitializer (const VarDecl &D)
	Try to emit the initiaizer of the given declaration as an abstract constant. More...
llvm::Constant *	tryEmitForInitializer (const Expr *E, LangAS destAddrSpace, QualType destType)
llvm::Constant *	emitForInitializer (const APValue &value, LangAS destAddrSpace, QualType destType)
void	finalize (llvm::GlobalVariable *global)
llvm::Constant *	tryEmitAbstractForInitializer (const VarDecl &D)
	Try to emit the initializer of the given declaration as an abstract constant. More...
llvm::Constant *	emitAbstract (const Expr *E, QualType T)
	Emit the result of the given expression as an abstract constant, asserting that it succeeded. More...
llvm::Constant *	emitAbstract (SourceLocation loc, const APValue &value, QualType T)
llvm::Constant *	tryEmitAbstract (const Expr *E, QualType T)
	Try to emit the result of the given expression as an abstract constant. More...
llvm::Constant *	tryEmitAbstractForMemory (const Expr *E, QualType T)
llvm::Constant *	tryEmitAbstract (const APValue &value, QualType T)
llvm::Constant *	tryEmitAbstractForMemory (const APValue &value, QualType T)
llvm::Constant *	emitNullForMemory (QualType T)
llvm::Constant *	emitForMemory (llvm::Constant *C, QualType T)
llvm::Constant *	tryEmitPrivateForVarInit (const VarDecl &D)
llvm::Constant *	tryEmitPrivate (const Expr *E, QualType T)
llvm::Constant *	tryEmitPrivateForMemory (const Expr *E, QualType T)
llvm::Constant *	tryEmitPrivate (const APValue &value, QualType T)
llvm::Constant *	tryEmitPrivateForMemory (const APValue &value, QualType T)
llvm::GlobalValue *	getCurrentAddrPrivate ()
	Get the address of the current location. More...
void	registerCurrentAddrPrivate (llvm::Constant *signal, llvm::GlobalValue *placeholder)
	Register a 'signal' value with the emitter to inform it where to resolve a placeholder. More...

Static Public Member Functions
static llvm::Constant *	emitNullForMemory (CodeGenModule &CGM, QualType T)
static llvm::Constant *	emitForMemory (CodeGenModule &CGM, llvm::Constant *C, QualType T)

Public Attributes
CodeGenModule &	CGM
CodeGenFunction *	CGF

Detailed Description

Definition at line 23 of file ConstantEmitter.h.

Constructor & Destructor Documentation

ConstantEmitter() [1/3]

clang::CodeGen::ConstantEmitter::ConstantEmitter ( CodeGenModule &  CGM, CodeGenFunction *  CGF = nullptr  )

inline

Definition at line 51 of file ConstantEmitter.h.

Referenced by ConstantEmitter().

ConstantEmitter() [2/3]

clang::CodeGen::ConstantEmitter::ConstantEmitter ( CodeGenFunction &  CGF )

inline

Initialize this emission in the context of the given function.

Use this if the expression might contain contextual references like block addresses or PredefinedExprs.

Definition at line 57 of file ConstantEmitter.h.

References ConstantEmitter(), operator=(), and ~ConstantEmitter().

ConstantEmitter() [3/3]

clang::CodeGen::ConstantEmitter::ConstantEmitter ( const ConstantEmitter &  other )

delete

~ConstantEmitter()

ConstantEmitter::~ConstantEmitter

(

)

Definition at line 1582 of file CGExprConstant.cpp.

Referenced by ConstantEmitter().

Member Function Documentation

emitAbstract() [1/2]

llvm::Constant * ConstantEmitter::emitAbstract	(	const Expr *	E,
		QualType	T
	)

Emit the result of the given expression as an abstract constant, asserting that it succeeded.

This is only safe to do when the expression is known to be a constant expression with either a fairly simple type or a known simple form.

Definition at line 1364 of file CGExprConstant.cpp.

References clang::CodeGen::CodeGenModule::EmitNullConstant(), clang::CodeGen::CodeGenModule::Error(), clang::Expr::getExprLoc(), and clang::CodeGen::state.

Referenced by clang::CodeGen::CodeGenModule::createOpenCLIntToSamplerConversion(), clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(), isAbstract(), and clang::CodeGen::CodeGenFunction::tryEmitAsConstant().

emitAbstract() [2/2]

llvm::Constant * ConstantEmitter::emitAbstract	(	SourceLocation	loc,
		const APValue &	value,
		QualType	T
	)

Definition at line 1377 of file CGExprConstant.cpp.

References clang::CodeGen::CodeGenModule::EmitNullConstant(), clang::CodeGen::CodeGenModule::Error(), and clang::CodeGen::state.

emitForInitializer()

llvm::Constant * ConstantEmitter::emitForInitializer	(	const APValue &	value,
		LangAS	destAddrSpace,
		QualType	destType
	)

Definition at line 1402 of file CGExprConstant.cpp.

Referenced by isAbstract().

emitForMemory() [1/2]

llvm::Constant* clang::CodeGen::ConstantEmitter::emitForMemory ( llvm::Constant *  C, QualType  T  )

inline

Definition at line 116 of file ConstantEmitter.h.

References emitNullForMemory(), getCurrentAddrPrivate(), registerCurrentAddrPrivate(), tryEmitPrivate(), tryEmitPrivateForMemory(), and tryEmitPrivateForVarInit().

emitForMemory() [2/2]

llvm::Constant * ConstantEmitter::emitForMemory ( CodeGenModule &  CGM, llvm::Constant *  C, QualType  T  )

static

Definition at line 1667 of file CGExprConstant.cpp.

References clang::CodeGen::CodeGenTypes::ConvertTypeForMem(), clang::Type::getAs(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getTypes(), clang::ASTContext::getTypeSize(), clang::CodeGen::CodeGenTypeCache::Int8Ty, and clang::CodeGen::Type.

emitNullForMemory() [1/2]

llvm::Constant* clang::CodeGen::ConstantEmitter::emitNullForMemory ( QualType  T )

inline

Definition at line 113 of file ConstantEmitter.h.

Referenced by emitForMemory(), and clang::CodeGen::CodeGenModule::EmitNullConstant().

emitNullForMemory() [2/2]

llvm::Constant * ConstantEmitter::emitNullForMemory ( CodeGenModule &  CGM, QualType  T  )

static

Definition at line 2289 of file CGExprConstant.cpp.

References clang::CodeGen::CodeGenModule::EmitNullConstant().

finalize()

void ConstantEmitter::finalize

(

llvm::GlobalVariable *

global

)

Definition at line 1566 of file CGExprConstant.cpp.

Referenced by clang::CodeGen::CodeGenFunction::AddInitializerToStaticVarDecl(), isAbstract(), isTrivialFiller(), and clang::CodeGen::CodeGenModule::isTypeConstant().

getCurrentAddrPrivate()

llvm::GlobalValue * ConstantEmitter::getCurrentAddrPrivate

(

)

Get the address of the current location.

This is a constant that will resolve, after finalization, to the address of the 'signal' value that is registered with the emitter later.

Definition at line 1411 of file CGExprConstant.cpp.

References clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getModule(), clang::ASTContext::getTargetAddressSpace(), and clang::CodeGen::CodeGenTypeCache::Int8Ty.

Referenced by emitForMemory().

isAbstract()

bool clang::CodeGen::ConstantEmitter::isAbstract ( ) const

inline

Is the current emission context abstract?

Definition at line 66 of file ConstantEmitter.h.

References emitAbstract(), emitForInitializer(), finalize(), tryEmitAbstract(), tryEmitAbstractForInitializer(), tryEmitAbstractForMemory(), and tryEmitForInitializer().

operator=()

ConstantEmitter& clang::CodeGen::ConstantEmitter::operator= ( const ConstantEmitter &  other )

delete

Referenced by ConstantEmitter().

registerCurrentAddrPrivate()

void ConstantEmitter::registerCurrentAddrPrivate	(	llvm::Constant *	signal,
		llvm::GlobalValue *	placeholder
	)

Register a 'signal' value with the emitter to inform it where to resolve a placeholder.

The signal value must be unique in the initializer; it might, for example, be the address of a global that refers to the current-address value in its own initializer.

Uses of the placeholder must be properly anchored before finalizing the emitter, e.g. by being installed as the initializer of a global variable. That is, it must be possible to replaceAllUsesWith the placeholder with the proper address of the signal.

Definition at line 1431 of file CGExprConstant.cpp.

Referenced by emitForMemory().

tryEmitAbstract() [1/2]

llvm::Constant * ConstantEmitter::tryEmitAbstract	(	const Expr *	E,
		QualType	T
	)

Try to emit the result of the given expression as an abstract constant.

Definition at line 1350 of file CGExprConstant.cpp.

References clang::CodeGen::state.

Referenced by EmitCXXNewAllocSize(), clang::CodeGen::CodeGenFunction::EmitObjCBoxedExpr(), and isAbstract().

tryEmitAbstract() [2/2]

llvm::Constant * ConstantEmitter::tryEmitAbstract	(	const APValue &	value,
		QualType	T
	)

Definition at line 1357 of file CGExprConstant.cpp.

References clang::CodeGen::state.

tryEmitAbstractForInitializer()

llvm::Constant * ConstantEmitter::tryEmitAbstractForInitializer

(

const VarDecl &

D

)

Try to emit the initializer of the given declaration as an abstract constant.

Definition at line 1343 of file CGExprConstant.cpp.

References clang::CodeGen::state.

Referenced by clang::CodeGen::CodeGenFunction::EmitAutoVarInit(), isAbstract(), and tryCaptureAsConstant().

tryEmitAbstractForMemory() [1/2]

llvm::Constant * ConstantEmitter::tryEmitAbstractForMemory	(	const Expr *	E,
		QualType	T
	)

Definition at line 1639 of file CGExprConstant.cpp.

References getNonMemoryType().

Referenced by isAbstract().

tryEmitAbstractForMemory() [2/2]

llvm::Constant * ConstantEmitter::tryEmitAbstractForMemory	(	const APValue &	value,
		QualType	T
	)

Definition at line 1646 of file CGExprConstant.cpp.

References getNonMemoryType().

tryEmitForInitializer() [1/2]

llvm::Constant * ConstantEmitter::tryEmitForInitializer

(

const VarDecl &

D

)

Try to emit the initiaizer of the given declaration as an abstract constant.

If this succeeds, the emission must be finalized.

Definition at line 1390 of file CGExprConstant.cpp.

References clang::QualType::getAddressSpace(), and clang::ValueDecl::getType().

Referenced by clang::CodeGen::CodeGenFunction::AddInitializerToStaticVarDecl(), isAbstract(), isTrivialFiller(), and clang::CodeGen::CodeGenModule::isTypeConstant().

tryEmitForInitializer() [2/2]

llvm::Constant * ConstantEmitter::tryEmitForInitializer	(	const Expr *	E,
		LangAS	destAddrSpace,
		QualType	destType
	)

Definition at line 1395 of file CGExprConstant.cpp.

tryEmitPrivate() [1/2]

llvm::Constant * ConstantEmitter::tryEmitPrivate	(	const Expr *	E,
		QualType	T
	)

Definition at line 1698 of file CGExprConstant.cpp.

References clang::Expr::EvaluateAsLValue(), clang::Expr::EvaluateAsRValue(), clang::CodeGen::CodeGenModule::getContext(), clang::Expr::EvalStatus::HasSideEffects, clang::Type::isReferenceType(), and clang::Expr::EvalResult::Val.

Referenced by emitForMemory().

tryEmitPrivate() [2/2]

llvm::Constant * ConstantEmitter::tryEmitPrivate	(	const APValue &	value,
		QualType	T
	)

Definition at line 2011 of file CGExprConstant.cpp.

References clang::APValue::AddrLabelDiff, clang::APValue::Array, Complex, clang::APValue::ComplexFloat, clang::APValue::ComplexInt, clang::CodeGen::CodeGenTypes::ConvertType(), clang::CodeGen::CGCXXABI::EmitMemberPointer(), clang::APValue::FixedPoint, clang::APValue::Float, clang::APValue::getAddrLabelDiffLHS(), clang::APValue::getAddrLabelDiffRHS(), clang::APValue::getArrayFiller(), clang::APValue::getArrayInitializedElt(), clang::APValue::getArrayInitializedElts(), clang::APValue::getArraySize(), clang::ASTContext::getAsArrayType(), clang::ASTContext::getAsConstantArrayType(), clang::APValue::getComplexFloatImag(), clang::APValue::getComplexFloatReal(), clang::APValue::getComplexIntImag(), clang::APValue::getComplexIntReal(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::ArrayType::getElementType(), clang::APValue::getFixedPoint(), clang::APValue::getFloat(), clang::APValue::getInt(), clang::APValue::getKind(), clang::ASTContext::getLangOpts(), clang::CodeGen::CodeGenModule::getLLVMContext(), clang::ASTContext::getTargetInfo(), clang::Expr::getType(), clang::CodeGen::CodeGenModule::getTypes(), clang::APFixedPoint::getValue(), clang::APValue::getVectorElt(), clang::APValue::getVectorLength(), clang::APValue::hasArrayFiller(), clang::APValue::Indeterminate, Inits, clang::APValue::Int, clang::CodeGen::CodeGenTypeCache::IntPtrTy, clang::APValue::isFloat(), clang::APValue::isInt(), clang::APValue::LValue, clang::APValue::MemberPointer, clang::APValue::None, clang::APValue::Struct, clang::CodeGen::Type, clang::APValue::Union, clang::TargetInfo::useFP16ConversionIntrinsics(), and clang::APValue::Vector.

tryEmitPrivateForMemory() [1/2]

llvm::Constant * ConstantEmitter::tryEmitPrivateForMemory	(	const Expr *	E,
		QualType	T
	)

Definition at line 1653 of file CGExprConstant.cpp.

References getNonMemoryType().

Referenced by emitForMemory().

tryEmitPrivateForMemory() [2/2]

llvm::Constant * ConstantEmitter::tryEmitPrivateForMemory	(	const APValue &	value,
		QualType	T
	)

Definition at line 1660 of file CGExprConstant.cpp.

References getNonMemoryType().

tryEmitPrivateForVarInit()

llvm::Constant * ConstantEmitter::tryEmitPrivateForVarInit

(

const VarDecl &

D

)

Definition at line 1596 of file CGExprConstant.cpp.

References clang::CodeGen::CodeGenModule::EmitNullConstant(), clang::VarDecl::evaluateValue(), clang::ASTContext::getBaseElementType(), clang::CodeGen::CodeGenModule::getContext(), clang::VarDecl::getInit(), getNonMemoryType(), clang::ValueDecl::getType(), clang::VarDecl::hasLocalStorage(), clang::CXXConstructorDecl::isDefaultConstructor(), clang::Type::isRecordType(), clang::Type::isReferenceType(), and clang::FunctionDecl::isTrivial().

Referenced by emitForMemory().

Member Data Documentation

CGF

CodeGenFunction* clang::CodeGen::ConstantEmitter::CGF

Definition at line 26 of file ConstantEmitter.h.

CGM

CodeGenModule& clang::CodeGen::ConstantEmitter::CGM

Definition at line 25 of file ConstantEmitter.h.

Referenced by clang::CodeGen::CodeGenModule::getNullPointer().

---

The documentation for this class was generated from the following files:

• lib/CodeGen/ConstantEmitter.h
• lib/CodeGen/CGExprConstant.cpp