clang::interp::ByteCodeEmitter Class Reference

An emitter which links the program to bytecode for later use. More...

#include "/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/clang/lib/AST/Interp/ByteCodeEmitter.h"

Collaboration diagram for clang::interp::ByteCodeEmitter:

Public Member Functions
llvm::Expected< Function * >	compileFunc (const FunctionDecl *FuncDecl)
	Compiles the function into the module.

Protected Types
using	LabelTy = uint32_t
using	AddrTy = uintptr_t
using	Local = Scope::Local

Protected Member Functions
	ByteCodeEmitter (Context &Ctx, Program &P)
virtual	~ByteCodeEmitter ()
void	emitLabel (LabelTy Label)
	Define a label.
LabelTy	getLabel ()
	Create a label.
virtual bool	visitFunc (const FunctionDecl *E)=0
	Methods implemented by the compiler.
virtual bool	visitExpr (const Expr *E)=0
virtual bool	visitDecl (const VarDecl *E)=0
bool	bail (const Stmt *S)
	Bails out if a given node cannot be compiled.
bool	bail (const Decl *D)
bool	bail (const SourceLocation &Loc)
bool	jumpTrue (const LabelTy &Label)
	Emits jumps.
bool	jumpFalse (const LabelTy &Label)
bool	jump (const LabelTy &Label)
bool	fallthrough (const LabelTy &Label)
Local	createLocal (Descriptor *D)
	Callback for local registration.

Protected Attributes
llvm::DenseMap< const ParmVarDecl *, unsigned >	Params
	Parameter indices.
llvm::SmallVector< SmallVector< Local, 8 >, 2 >	Descriptors
	Local descriptors.

Detailed Description

An emitter which links the program to bytecode for later use.

Definition at line 32 of file ByteCodeEmitter.h.

Member Typedef Documentation

AddrTy

using clang::interp::ByteCodeEmitter::AddrTy = uintptr_t

protected

Definition at line 35 of file ByteCodeEmitter.h.

LabelTy

using clang::interp::ByteCodeEmitter::LabelTy = uint32_t

protected

Definition at line 34 of file ByteCodeEmitter.h.

Local

using clang::interp::ByteCodeEmitter::Local = Scope::Local

protected

Definition at line 36 of file ByteCodeEmitter.h.

Constructor & Destructor Documentation

ByteCodeEmitter()

clang::interp::ByteCodeEmitter::ByteCodeEmitter ( Context &  Ctx, Program &  P  )

inlineprotected

Definition at line 43 of file ByteCodeEmitter.h.

References P.

~ByteCodeEmitter()

virtual clang::interp::ByteCodeEmitter::~ByteCodeEmitter ( )

inlineprotectedvirtual

Definition at line 45 of file ByteCodeEmitter.h.

Member Function Documentation

bail() [1/3]

bool clang::interp::ByteCodeEmitter::bail ( const Decl *  D )

inlineprotected

Definition at line 59 of file ByteCodeEmitter.h.

References bail(), and clang::Decl::getBeginLoc().

Referenced by bail().

bail() [2/3]

bool ByteCodeEmitter::bail ( const SourceLocation &  Loc )

protected

Definition at line 143 of file ByteCodeEmitter.cpp.

bail() [3/3]

bool clang::interp::ByteCodeEmitter::bail ( const Stmt *  S )

inlineprotected

Bails out if a given node cannot be compiled.

Definition at line 58 of file ByteCodeEmitter.h.

References bail().

Referenced by bail().

compileFunc()

Expected< Function * > ByteCodeEmitter::compileFunc

(

const FunctionDecl *

FuncDecl

)

Compiles the function into the module.

Definition at line 24 of file ByteCodeEmitter.cpp.

References clang::interp::align(), clang::interp::Context::classify(), clang::interp::Program::createDescriptor(), clang::interp::Program::createFunction(), Descriptors, clang::interp::Program::getFunction(), clang::FunctionDecl::getReturnType(), clang::FunctionDecl::isConstexpr(), clang::FunctionDecl::isDefined(), clang::Type::isVoidType(), clang::FunctionDecl::parameters(), Params, clang::interp::primSize(), clang::interp::PT_Ptr, and visitFunc().

createLocal()

Scope::Local ByteCodeEmitter::createLocal ( Descriptor *  D )

protected

Callback for local registration.

Definition at line 101 of file ByteCodeEmitter.cpp.

References clang::interp::align(), and clang::interp::Descriptor::getAllocSize().

emitLabel()

void ByteCodeEmitter::emitLabel ( LabelTy  Label )

protected

Define a label.

Rewrite the operand of all jumps to this label.

Definition at line 108 of file ByteCodeEmitter.cpp.

References clang::interp::align(), clang::interp::aligned(), Label, Offset, and clang::Target.

Referenced by fallthrough().

fallthrough()

bool ByteCodeEmitter::fallthrough ( const LabelTy &  Label )

protected

Definition at line 209 of file ByteCodeEmitter.cpp.

References emitLabel(), and Label.

getLabel()

LabelTy clang::interp::ByteCodeEmitter::getLabel ( )

inlineprotected

Create a label.

Definition at line 50 of file ByteCodeEmitter.h.

jump()

bool ByteCodeEmitter::jump ( const LabelTy &  Label )

protected

Definition at line 205 of file ByteCodeEmitter.cpp.

References Label.

jumpFalse()

bool ByteCodeEmitter::jumpFalse ( const LabelTy &  Label )

protected

Definition at line 201 of file ByteCodeEmitter.cpp.

References Label.

jumpTrue()

bool ByteCodeEmitter::jumpTrue ( const LabelTy &  Label )

protected

Emits jumps.

Definition at line 197 of file ByteCodeEmitter.cpp.

References Label.

visitDecl()

virtual bool clang::interp::ByteCodeEmitter::visitDecl ( const VarDecl *  E )

protectedpure virtual

visitExpr()

virtual bool clang::interp::ByteCodeEmitter::visitExpr ( const Expr *  E )

protectedpure virtual

visitFunc()

virtual bool clang::interp::ByteCodeEmitter::visitFunc ( const FunctionDecl *  E )

protectedpure virtual

Methods implemented by the compiler.

Referenced by compileFunc().

Member Data Documentation

Descriptors

llvm::SmallVector<SmallVector<Local, 8>, 2> clang::interp::ByteCodeEmitter::Descriptors

protected

Local descriptors.

Definition at line 74 of file ByteCodeEmitter.h.

Referenced by compileFunc().

Params

llvm::DenseMap<const ParmVarDecl *, unsigned> clang::interp::ByteCodeEmitter::Params

protected

Parameter indices.

Definition at line 72 of file ByteCodeEmitter.h.

Referenced by compileFunc().

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

• lib/AST/Interp/ByteCodeEmitter.h
• lib/AST/Interp/ByteCodeEmitter.cpp