Compilation context for expressions. More...

#include "/opt/doxygen-docs/src/clang/lib/AST/Interp/ByteCodeExprGen.h"

Inheritance diagram for clang::interp::ByteCodeExprGen< Emitter >:

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Collaboration diagram for clang::interp::ByteCodeExprGen< Emitter >:

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Public Member Functions
template<typename... Tys>
	ByteCodeExprGen (Context &Ctx, Program &P, Tys &&... Args)
	Initializes the compiler and the backend emitter. More...

bool	VisitCastExpr (const CastExpr *E)

bool	VisitIntegerLiteral (const IntegerLiteral *E)

bool	VisitParenExpr (const ParenExpr *E)

bool	VisitBinaryOperator (const BinaryOperator *E)

Public Member Functions inherited from clang::StmtVisitorBase< llvm::make_const_ptr, ByteCodeExprGen< Emitter >, bool, ParamTys... >
bool	Visit (PTR(Stmt) S, ParamTys... P)

	BINOP_FALLBACK (PtrMemD) BINOP_FALLBACK(PtrMemI) BINOP_FALLBACK(Mul) BINOP_FALLBACK(Div) BINOP_FALLBACK(Rem) BINOP_FALLBACK(Add) BINOP_FALLBACK(Sub) BINOP_FALLBACK(Shl) BINOP_FALLBACK(LT) BINOP_FALLBACK(GT) BINOP_FALLBACK(LE) BINOP_FALLBACK(GE) BINOP_FALLBACK(EQ) BINOP_FALLBACK(NE) BINOP_FALLBACK(And) BINOP_FALLBACK(Xor) BINOP_FALLBACK(Or) BINOP_FALLBACK(LAnd) BINOP_FALLBACK(LOr) CAO_FALLBACK(MulAssign) CAO_FALLBACK(DivAssign) CAO_FALLBACK(RemAssign) CAO_FALLBACK(AddAssign) CAO_FALLBACK(SubAssign) CAO_FALLBACK(ShlAssign) CAO_FALLBACK(ShrAssign) CAO_FALLBACK(AndAssign) CAO_FALLBACK(OrAssign) UNARYOP_FALLBACK(PostInc) UNARYOP_FALLBACK(PostDec) UNARYOP_FALLBACK(PreInc) UNARYOP_FALLBACK(PreDec) UNARYOP_FALLBACK(AddrOf) UNARYOP_FALLBACK(Deref) UNARYOP_FALLBACK(Plus) UNARYOP_FALLBACK(Minus) UNARYOP_FALLBACK(Not) UNARYOP_FALLBACK(LNot) UNARYOP_FALLBACK(Real) UNARYOP_FALLBACK(Imag) UNARYOP_FALLBACK(Extension) UNARYOP_FALLBACK(Coawait) bool VisitStmt(PTR(Stmt) Node

Protected Types
using	NullaryFn = bool(ByteCodeExprGen::*)(const SourceInfo &)

using	UnaryFn = bool(ByteCodeExprGen::*)(PrimType, const SourceInfo &)

using	BinaryFn = bool(ByteCodeExprGen::*)(PrimType, PrimType, const SourceInfo &)

using	LabelTy = typename Emitter::LabelTy

using	AddrTy = typename Emitter::AddrTy

using	InitFnRef = std::function< bool()>

Protected Member Functions
bool	visitExpr (const Expr *E) override

bool	visitDecl (const VarDecl *VD) override

void	emitCleanup ()
	Emits scope cleanup instructions. More...

const RecordType *	getRecordTy (QualType Ty)
	Returns a record type from a record or pointer type. More...

Record *	getRecord (QualType Ty)
	Returns a record from a record or pointer type. More...

Record *	getRecord (const RecordDecl *RD)

unsigned	getIntWidth (QualType Ty)
	Returns the size int bits of an integer. More...

unsigned	getCharBit () const
	Returns the value of CHAR_BIT. More...

llvm::Optional< PrimType >	classify (const Expr *E) const
	Classifies a type. More...

llvm::Optional< PrimType >	classify (QualType Ty) const

bool	needsAdjust (QualType Ty) const
	Checks if a pointer needs adjustment. More...

PrimType	classifyPrim (QualType Ty) const
	Classifies a known primitive type. More...

bool	discard (const Expr *E)
	Evaluates an expression for side effects and discards the result. More...

bool	visit (const Expr *E)
	Evaluates an expression and places result on stack. More...

bool	visitInitializer (const Expr *E, InitFnRef GenPtr)
	Compiles an initializer for a local. More...

bool	visitBool (const Expr *E)
	Visits an expression and converts it to a boolean. More...

bool	visitLocalInitializer (const Expr *Init, unsigned I)
	Visits an initializer for a local. More...

bool	visitGlobalInitializer (const Expr *Init, unsigned I)
	Visits an initializer for a global. More...

bool	visitThisInitializer (const Expr *I)
	Visits a delegated initializer. More...

unsigned	allocateLocalPrimitive (DeclTy &&Decl, PrimType Ty, bool IsMutable, bool IsExtended=false)
	Creates a local primitive value. More...

llvm::Optional< unsigned >	allocateLocal (DeclTy &&Decl, bool IsExtended=false)
	Allocates a space storing a local given its type. More...

Protected Attributes
Context &	Ctx
	Current compilation context. More...

Program &	P
	Program to link to. More...

llvm::DenseMap< const ValueDecl *, Scope::Local >	Locals
	Variable to storage mapping. More...

llvm::DenseMap< const OpaqueValueExpr *, unsigned >	OpaqueExprs
	OpaqueValueExpr to location mapping. More...

VariableScope< Emitter > *	VarScope = nullptr
	Current scope. More...

llvm::Optional< uint64_t >	ArrayIndex
	Current argument index. More...

bool	DiscardResult = false
	Flag indicating if return value is to be discarded. More...

llvm::Optional< InitFnRef >	InitFn = {}
	Expression being initialized. More...

Friends
class	VariableScope< Emitter >

class	LocalScope< Emitter >

class	RecordScope< Emitter >

class	DeclScope< Emitter >

class	OptionScope< Emitter >

Additional Inherited Members
Public Attributes inherited from clang::StmtVisitorBase< llvm::make_const_ptr, ByteCodeExprGen< Emitter >, bool, ParamTys... >
ParamTys	P

Detailed Description

template<class Emitter>
class clang::interp::ByteCodeExprGen< Emitter >

Compilation context for expressions.

Definition at line 42 of file ByteCodeExprGen.h.

Member Typedef Documentation

◆ AddrTy

template<class Emitter>

using clang::interp::ByteCodeExprGen< Emitter >::AddrTy = typename Emitter::AddrTy

protected

Definition at line 53 of file ByteCodeExprGen.h.

◆ BinaryFn

template<class Emitter>

using clang::interp::ByteCodeExprGen< Emitter >::BinaryFn = bool (ByteCodeExprGen::*)(PrimType, PrimType, const SourceInfo &)

protected

Definition at line 49 of file ByteCodeExprGen.h.

◆ InitFnRef

template<class Emitter>

using clang::interp::ByteCodeExprGen< Emitter >::InitFnRef = std::function<bool()>

protected

Definition at line 56 of file ByteCodeExprGen.h.

◆ LabelTy

template<class Emitter>

using clang::interp::ByteCodeExprGen< Emitter >::LabelTy = typename Emitter::LabelTy

protected

Definition at line 52 of file ByteCodeExprGen.h.

◆ NullaryFn

template<class Emitter>

using clang::interp::ByteCodeExprGen< Emitter >::NullaryFn = bool (ByteCodeExprGen::*)(const SourceInfo &)

protected

Definition at line 46 of file ByteCodeExprGen.h.

◆ UnaryFn

template<class Emitter>

using clang::interp::ByteCodeExprGen< Emitter >::UnaryFn = bool (ByteCodeExprGen::*)(PrimType, const SourceInfo &)

protected

Definition at line 47 of file ByteCodeExprGen.h.

Constructor & Destructor Documentation

◆ ByteCodeExprGen()

template<class Emitter>

template<typename... Tys>

clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen	(	Context &	Ctx,
		Program &	P,
		Tys &&...	Args
	)

inline

Initializes the compiler and the backend emitter.

Definition at line 66 of file ByteCodeExprGen.h.

Member Function Documentation

◆ allocateLocal()

template<class Emitter >

llvm::Optional< unsigned > ByteCodeExprGen::allocateLocal	(	DeclTy &&	Decl,
		bool	IsExtended = `false`
	)

protected

Allocates a space storing a local given its type.

Definition at line 437 of file ByteCodeExprGen.cpp.

References clang::Expr::getType(), clang::ValueDecl::getType(), clang::QualType::getTypePtr(), clang::QualType::isConstQualified(), clang::interp::Scope::Local::Offset, and P.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::visitThisInitializer().

◆ allocateLocalPrimitive()

template<class Emitter >

unsigned ByteCodeExprGen::allocateLocalPrimitive	(	DeclTy &&	Decl,
		PrimType	Ty,
		bool	IsMutable,
		bool	IsExtended = `false`
	)

protected

Creates a local primitive value.

Definition at line 423 of file ByteCodeExprGen.cpp.

References clang::interp::Scope::Local::Offset, and P.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::visitThisInitializer().

◆ classify() [1/2]

template<class Emitter>

llvm::Optional<PrimType> clang::interp::ByteCodeExprGen< Emitter >::classify ( const Expr * E ) const

inlineprotected

Classifies a type.

Definition at line 103 of file ByteCodeExprGen.h.

References clang::Expr::getType(), clang::Expr::isGLValue(), and clang::interp::PT_Ptr.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::classifyPrim().

◆ classify() [2/2]

template<class Emitter>

llvm::Optional<PrimType> clang::interp::ByteCodeExprGen< Emitter >::classify ( QualType Ty ) const

inlineprotected

Definition at line 106 of file ByteCodeExprGen.h.

References clang::interp::Context::classify().

◆ classifyPrim()

template<class Emitter>

PrimType clang::interp::ByteCodeExprGen< Emitter >::classifyPrim ( QualType Ty ) const

inlineprotected

Classifies a known primitive type.

Definition at line 116 of file ByteCodeExprGen.h.

References clang::interp::ByteCodeExprGen< Emitter >::classify(), clang::interp::ByteCodeExprGen< Emitter >::discard(), clang::interp::ByteCodeExprGen< Emitter >::visit(), clang::interp::ByteCodeExprGen< Emitter >::visitBool(), and clang::interp::ByteCodeExprGen< Emitter >::visitInitializer().

◆ discard()

template<class Emitter >

bool ByteCodeExprGen::discard ( const Expr * E )

protected

Evaluates an expression for side effects and discards the result.

Definition at line 209 of file ByteCodeExprGen.cpp.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::classifyPrim().

◆ emitCleanup()

template<class Emitter >

void ByteCodeExprGen::emitCleanup ( )

protected

Emits scope cleanup instructions.

Definition at line 568 of file ByteCodeExprGen.cpp.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ getCharBit()

template<class Emitter>

unsigned clang::interp::ByteCodeExprGen< Emitter >::getCharBit ( ) const

inlineprotected

Returns the value of CHAR_BIT.

Definition at line 97 of file ByteCodeExprGen.h.

References clang::interp::Context::getASTContext(), clang::TargetInfo::getCharWidth(), and clang::ASTContext::getTargetInfo().

◆ getIntWidth()

template<class Emitter>

unsigned clang::interp::ByteCodeExprGen< Emitter >::getIntWidth ( QualType Ty )

inlineprotected

Returns the size int bits of an integer.

Definition at line 91 of file ByteCodeExprGen.h.

References clang::interp::Context::getASTContext(), and clang::ASTContext::getIntWidth().

◆ getRecord() [1/2]

template<class Emitter >

Record * ByteCodeExprGen::getRecord ( QualType Ty )

protected

Returns a record from a record or pointer type.

Definition at line 506 of file ByteCodeExprGen.cpp.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ getRecord() [2/2]

template<class Emitter >

Record * ByteCodeExprGen::getRecord ( const RecordDecl * RD )

protected

Definition at line 514 of file ByteCodeExprGen.cpp.

References P.

◆ getRecordTy()

template<class Emitter >

const RecordType * ByteCodeExprGen::getRecordTy ( QualType Ty )

protected

Returns a record type from a record or pointer type.

Definition at line 498 of file ByteCodeExprGen.cpp.

References clang::Type::getAs(), and clang::Type::getPointeeType().

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ needsAdjust()

template<class Emitter>

bool clang::interp::ByteCodeExprGen< Emitter >::needsAdjust ( QualType Ty ) const

inlineprotected

Checks if a pointer needs adjustment.

Definition at line 111 of file ByteCodeExprGen.h.

◆ visit()

template<class Emitter >

bool ByteCodeExprGen::visit ( const Expr * E )

protected

Evaluates an expression and places result on stack.

Definition at line 215 of file ByteCodeExprGen.cpp.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::classifyPrim().

◆ VisitBinaryOperator()

template<class Emitter >

bool ByteCodeExprGen::VisitBinaryOperator ( const BinaryOperator * E )

Definition at line 146 of file ByteCodeExprGen.cpp.

References clang::BinaryOperator::getLHS(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), clang::Expr::getType(), and clang::interp::LT().

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ visitBool()

template<class Emitter >

bool ByteCodeExprGen::visitBool ( const Expr * E )

protected

Visits an expression and converts it to a boolean.

Definition at line 221 of file ByteCodeExprGen.cpp.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::classifyPrim().

◆ VisitCastExpr()

template<class Emitter >

bool ByteCodeExprGen::VisitCastExpr ( const CastExpr * E )

Definition at line 90 of file ByteCodeExprGen.cpp.

References dereference(), clang::CastExpr::getCastKind(), and clang::CastExpr::getSubExpr().

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ visitDecl()

template<class Emitter >

bool ByteCodeExprGen::visitDecl ( const VarDecl * VD )

overrideprotected

Definition at line 531 of file ByteCodeExprGen.cpp.

References clang::VarDecl::getInit(), clang::ValueDecl::getType(), and P.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ visitExpr()

template<class Emitter >

bool ByteCodeExprGen::visitExpr ( const Expr * E )

overrideprotected

Definition at line 519 of file ByteCodeExprGen.cpp.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ visitGlobalInitializer()

template<class Emitter>

bool clang::interp::ByteCodeExprGen< Emitter >::visitGlobalInitializer	(	const Expr *	Init,
		unsigned	I
	)

inlineprotected

Visits an initializer for a global.

Definition at line 141 of file ByteCodeExprGen.h.

References clang::interp::ByteCodeExprGen< Emitter >::visitInitializer().

◆ visitInitializer()

template<class Emitter >

bool ByteCodeExprGen::visitInitializer	(	const Expr *	E,
		InitFnRef	GenPtr
	)

protected

Compiles an initializer for a local.

Definition at line 464 of file ByteCodeExprGen.cpp.

References clang::ValueDecl::getType(), clang::VarDecl::hasLocalStorage(), clang::VarDecl::isConstexpr(), clang::Type::isReferenceType(), and P.

Referenced by clang::interp::ByteCodeExprGen< Emitter >::classifyPrim(), clang::interp::ByteCodeExprGen< Emitter >::visitGlobalInitializer(), clang::interp::ByteCodeExprGen< Emitter >::visitLocalInitializer(), and clang::interp::ByteCodeExprGen< Emitter >::visitThisInitializer().

◆ VisitIntegerLiteral()

template<class Emitter >

bool ByteCodeExprGen::VisitIntegerLiteral ( const IntegerLiteral * E )

Definition at line 129 of file ByteCodeExprGen.cpp.

References clang::Expr::getType(), clang::APIntStorage::getValue(), and clang::interp::LE().

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ visitLocalInitializer()

template<class Emitter>

bool clang::interp::ByteCodeExprGen< Emitter >::visitLocalInitializer	(	const Expr *	Init,
		unsigned	I
	)

inlineprotected

Visits an initializer for a local.

Definition at line 134 of file ByteCodeExprGen.h.

References clang::interp::ByteCodeExprGen< Emitter >::visitInitializer().

◆ VisitParenExpr()

template<class Emitter >

bool ByteCodeExprGen::VisitParenExpr ( const ParenExpr * E )

Definition at line 141 of file ByteCodeExprGen.cpp.

References clang::ParenExpr::getSubExpr().

Referenced by clang::interp::ByteCodeExprGen< Emitter >::ByteCodeExprGen().

◆ visitThisInitializer()

template<class Emitter>

bool clang::interp::ByteCodeExprGen< Emitter >::visitThisInitializer ( const Expr * I )

inlineprotected

Visits a delegated initializer.

Definition at line 148 of file ByteCodeExprGen.h.

References clang::interp::ByteCodeExprGen< Emitter >::allocateLocal(), clang::interp::ByteCodeExprGen< Emitter >::allocateLocalPrimitive(), and clang::interp::ByteCodeExprGen< Emitter >::visitInitializer().

Friends And Related Function Documentation

◆ DeclScope< Emitter >

template<class Emitter>

friend class DeclScope< Emitter >

friend

Definition at line 164 of file ByteCodeExprGen.h.

◆ LocalScope< Emitter >

template<class Emitter>

friend class LocalScope< Emitter >

friend

Definition at line 162 of file ByteCodeExprGen.h.

◆ OptionScope< Emitter >

template<class Emitter>

friend class OptionScope< Emitter >

friend

Definition at line 165 of file ByteCodeExprGen.h.

◆ RecordScope< Emitter >

template<class Emitter>

friend class RecordScope< Emitter >

friend

Definition at line 163 of file ByteCodeExprGen.h.

◆ VariableScope< Emitter >

template<class Emitter>

friend class VariableScope< Emitter >

friend

Definition at line 161 of file ByteCodeExprGen.h.

Member Data Documentation

◆ ArrayIndex

template<class Emitter>

llvm::Optional<uint64_t> clang::interp::ByteCodeExprGen< Emitter >::ArrayIndex

protected

Current argument index.

Definition at line 228 of file ByteCodeExprGen.h.

◆ Ctx

template<class Emitter>

Context& clang::interp::ByteCodeExprGen< Emitter >::Ctx

protected

Current compilation context.

Definition at line 59 of file ByteCodeExprGen.h.

◆ DiscardResult

template<class Emitter>

bool clang::interp::ByteCodeExprGen< Emitter >::DiscardResult = false

protected

Flag indicating if return value is to be discarded.

Definition at line 231 of file ByteCodeExprGen.h.

Referenced by clang::interp::OptionScope< Emitter >::OptionScope().

◆ InitFn

template<class Emitter>

llvm::Optional<InitFnRef> clang::interp::ByteCodeExprGen< Emitter >::InitFn = {}

protected

Expression being initialized.

Definition at line 234 of file ByteCodeExprGen.h.

Referenced by clang::interp::OptionScope< Emitter >::OptionScope().

◆ Locals

template<class Emitter>

llvm::DenseMap<const ValueDecl *, Scope::Local> clang::interp::ByteCodeExprGen< Emitter >::Locals

protected

Variable to storage mapping.

Definition at line 219 of file ByteCodeExprGen.h.

◆ OpaqueExprs

template<class Emitter>

llvm::DenseMap<const OpaqueValueExpr *, unsigned> clang::interp::ByteCodeExprGen< Emitter >::OpaqueExprs

protected

OpaqueValueExpr to location mapping.

Definition at line 222 of file ByteCodeExprGen.h.

◆ P

template<class Emitter>

Program& clang::interp::ByteCodeExprGen< Emitter >::P

protected

Program to link to.

Definition at line 61 of file ByteCodeExprGen.h.

◆ VarScope

template<class Emitter>

VariableScope<Emitter>* clang::interp::ByteCodeExprGen< Emitter >::VarScope = nullptr

protected

Current scope.

Definition at line 225 of file ByteCodeExprGen.h.

Referenced by clang::interp::VariableScope< Emitter >::VariableScope().

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

lib/AST/Interp/ByteCodeExprGen.h
lib/AST/Interp/ByteCodeExprGen.cpp

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

template<class Emitter> class clang::interp::ByteCodeExprGen< Emitter >

Member Typedef Documentation

◆ AddrTy

◆ BinaryFn

◆ InitFnRef

◆ LabelTy

◆ NullaryFn

◆ UnaryFn

Constructor & Destructor Documentation

◆ ByteCodeExprGen()

Member Function Documentation

◆ allocateLocal()

◆ allocateLocalPrimitive()

◆ classify() [1/2]

◆ classify() [2/2]

◆ classifyPrim()

◆ discard()

◆ emitCleanup()

◆ getCharBit()

◆ getIntWidth()

◆ getRecord() [1/2]

◆ getRecord() [2/2]

◆ getRecordTy()

◆ needsAdjust()

◆ visit()

◆ VisitBinaryOperator()

◆ visitBool()

◆ VisitCastExpr()

◆ visitDecl()

◆ visitExpr()

◆ visitGlobalInitializer()

◆ visitInitializer()

◆ VisitIntegerLiteral()

◆ visitLocalInitializer()

◆ VisitParenExpr()

◆ visitThisInitializer()

Friends And Related Function Documentation

◆ DeclScope< Emitter >

◆ LocalScope< Emitter >

◆ OptionScope< Emitter >

◆ RecordScope< Emitter >

◆ VariableScope< Emitter >

Member Data Documentation

◆ ArrayIndex

◆ Ctx

◆ DiscardResult

◆ InitFn

◆ Locals

◆ OpaqueExprs

◆ P

◆ VarScope

template<class Emitter>
class clang::interp::ByteCodeExprGen< Emitter >