clang  16.0.0git
Classes | Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
clang::CodeGen::ConstantEmitter Class Reference

#include "/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/clang/lib/CodeGen/ConstantEmitter.h"

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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...
 
bool isInConstantContext () const
 
void setInConstantContext (bool var)
 
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 * tryEmitConstantExpr (const ConstantExpr *CE)
 
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 *const 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.

◆ 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.

◆ ConstantEmitter() [3/3]

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

◆ ~ConstantEmitter()

ConstantEmitter::~ConstantEmitter ( )

Definition at line 1624 of file CGExprConstant.cpp.

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 1406 of file CGExprConstant.cpp.

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

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

◆ emitAbstract() [2/2]

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

Definition at line 1419 of file CGExprConstant.cpp.

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

◆ emitForInitializer()

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

Definition at line 1444 of file CGExprConstant.cpp.

References tryEmitPrivateForMemory().

◆ emitForMemory() [1/2]

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

Definition at line 1709 of file CGExprConstant.cpp.

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

◆ emitForMemory() [2/2]

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

Definition at line 121 of file ConstantEmitter.h.

References CGM.

Referenced by emitForMemory(), emitNullForMemory(), tryEmitAbstractForMemory(), tryEmitPrivateForMemory(), and tryEmitPrivateForVarInit().

◆ emitNullForMemory() [1/2]

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

Definition at line 2337 of file CGExprConstant.cpp.

References CGM, emitForMemory(), and clang::CodeGen::CodeGenModule::EmitNullConstant().

◆ emitNullForMemory() [2/2]

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

Definition at line 118 of file ConstantEmitter.h.

References CGM.

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

◆ finalize()

void ConstantEmitter::finalize ( llvm::GlobalVariable *  global)

Definition at line 1608 of file CGExprConstant.cpp.

References CGM.

Referenced by clang::CodeGen::CodeGenFunction::AddInitializerToStaticVarDecl().

◆ 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 1453 of file CGExprConstant.cpp.

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

◆ isAbstract()

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

Is the current emission context abstract?

Definition at line 66 of file ConstantEmitter.h.

◆ isInConstantContext()

bool clang::CodeGen::ConstantEmitter::isInConstantContext ( ) const
inline

Definition at line 70 of file ConstantEmitter.h.

◆ operator=()

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

◆ 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 1473 of file CGExprConstant.cpp.

◆ setInConstantContext()

void clang::CodeGen::ConstantEmitter::setInConstantContext ( bool  var)
inline

Definition at line 71 of file ConstantEmitter.h.

References clang::dataflow::var().

◆ tryEmitAbstract() [1/2]

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

Definition at line 1388 of file CGExprConstant.cpp.

References state, and tryEmitPrivate().

◆ tryEmitAbstract() [2/2]

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 1381 of file CGExprConstant.cpp.

References state, and tryEmitPrivate().

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

◆ tryEmitAbstractForInitializer()

llvm::Constant * ConstantEmitter::tryEmitAbstractForInitializer ( const VarDecl &  D)

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

Definition at line 1374 of file CGExprConstant.cpp.

References state, and tryEmitPrivateForVarInit().

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

◆ tryEmitAbstractForMemory() [1/2]

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

Definition at line 1688 of file CGExprConstant.cpp.

References CGM, emitForMemory(), getNonMemoryType(), and tryEmitAbstract().

◆ tryEmitAbstractForMemory() [2/2]

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

Definition at line 1681 of file CGExprConstant.cpp.

References CGM, emitForMemory(), getNonMemoryType(), and tryEmitAbstract().

Referenced by tryEmitPrivate().

◆ tryEmitConstantExpr()

llvm::Constant * ConstantEmitter::tryEmitConstantExpr ( const ConstantExpr *  CE)

Definition at line 1394 of file CGExprConstant.cpp.

References CGM, emitAbstract(), clang::ConstantExpr::getAPValueResult(), clang::ConstantExpr::getBeginLoc(), clang::CodeGen::CodeGenModule::getContext(), clang::ASTContext::getLValueReferenceType(), clang::Expr::getType(), clang::ConstantExpr::hasAPValueResult(), and clang::Expr::isGLValue().

Referenced by clang::CodeGen::CodeGenFunction::EmitLValue().

◆ tryEmitForInitializer() [1/2]

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

Definition at line 1437 of file CGExprConstant.cpp.

References tryEmitPrivateForMemory().

◆ tryEmitForInitializer() [2/2]

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 1432 of file CGExprConstant.cpp.

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

Referenced by clang::CodeGen::CodeGenFunction::AddInitializerToStaticVarDecl().

◆ tryEmitPrivate() [1/2]

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

Definition at line 2069 of file CGExprConstant.cpp.

References clang::APValue::AddrLabelDiff, clang::APValue::Array, CGM, Complex, clang::APValue::ComplexFloat, clang::APValue::ComplexInt, clang::CodeGen::CodeGenTypes::ConvertType(), clang::CodeGen::CGCXXABI::EmitMemberPointer(), clang::APValue::FixedPoint, clang::APValue::Float, clang::ASTContext::getAsArrayType(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::ArrayType::getElementType(), clang::APValue::getFloat(), clang::APValue::getInt(), clang::ASTContext::getLangOpts(), clang::CodeGen::CodeGenModule::getLLVMContext(), clang::ASTContext::getTargetInfo(), clang::Expr::getType(), clang::CodeGen::CodeGenModule::getTypes(), clang::APValue::getVectorElt(), clang::APValue::Indeterminate, 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, tryEmitAbstractForMemory(), tryEmitPrivate(), tryEmitPrivateForMemory(), clang::APValue::Union, clang::TargetInfo::useFP16ConversionIntrinsics(), and clang::APValue::Vector.

◆ tryEmitPrivate() [2/2]

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

Definition at line 1740 of file CGExprConstant.cpp.

References CGM, clang::Expr::EvaluateAsLValue(), clang::Expr::EvaluateAsRValue(), clang::CodeGen::CodeGenModule::getContext(), clang::Type::isReferenceType(), and clang::Type::isVoidType().

Referenced by emitAbstract(), tryEmitAbstract(), tryEmitPrivate(), and tryEmitPrivateForMemory().

◆ tryEmitPrivateForMemory() [1/2]

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

Definition at line 1702 of file CGExprConstant.cpp.

References CGM, emitForMemory(), getNonMemoryType(), and tryEmitPrivate().

◆ tryEmitPrivateForMemory() [2/2]

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

Definition at line 1695 of file CGExprConstant.cpp.

References CGM, emitForMemory(), getNonMemoryType(), and tryEmitPrivate().

Referenced by emitForInitializer(), tryEmitForInitializer(), tryEmitPrivate(), and tryEmitPrivateForVarInit().

◆ tryEmitPrivateForVarInit()

llvm::Constant * ConstantEmitter::tryEmitPrivateForVarInit ( const VarDecl &  D)

Definition at line 1638 of file CGExprConstant.cpp.

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

Referenced by tryEmitAbstractForInitializer(), and tryEmitForInitializer().

Member Data Documentation

◆ CGF

CodeGenFunction* const 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 emitAbstract(), emitForMemory(), emitNullForMemory(), finalize(), getCurrentAddrPrivate(), tryEmitAbstractForMemory(), tryEmitConstantExpr(), tryEmitPrivate(), tryEmitPrivateForMemory(), and tryEmitPrivateForVarInit().

The documentation for this class was generated from the following files:
Generated on Sun Dec 4 2022 09:20:11 for clang by   doxygen 1.8.17