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//===--- CodeGen/ModuleBuilder.h - Build LLVM from ASTs ---------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the ModuleBuilder interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_CODEGEN_MODULEBUILDER_H
#define LLVM_CLANG_CODEGEN_MODULEBUILDER_H
#include "clang/AST/ASTConsumer.h"
#include "clang/Basic/LLVM.h"
#include "llvm/ADT/StringRef.h"
namespace llvm {
class Constant;
class LLVMContext;
class Module;
class StringRef;
namespace vfs {
class FileSystem;
}
}
// Prefix of the name of the artificial inline frame.
inline constexpr llvm::StringRef ClangTrapPrefix = "__clang_trap_msg";
namespace clang {
class CodeGenOptions;
class CoverageSourceInfo;
class Decl;
class DiagnosticsEngine;
class GlobalDecl;
class HeaderSearchOptions;
class LangOptions;
class PreprocessorOptions;
namespace CodeGen {
class CodeGenModule;
class CGDebugInfo;
}
/// The primary public interface to the Clang code generator.
///
/// This is not really an abstract interface.
class CodeGenerator : public ASTConsumer {
virtual void anchor();
public:
/// Return an opaque reference to the CodeGenModule object, which can
/// be used in various secondary APIs. It is valid as long as the
/// CodeGenerator exists.
CodeGen::CodeGenModule &CGM();
/// Return the module that this code generator is building into.
///
/// This may return null after HandleTranslationUnit is called;
/// this signifies that there was an error generating code. A
/// diagnostic will have been generated in this case, and the module
/// will be deleted.
///
/// It will also return null if the module is released.
llvm::Module *GetModule();
/// Release ownership of the module to the caller.
///
/// It is illegal to call methods other than GetModule on the
/// CodeGenerator after releasing its module.
llvm::Module *ReleaseModule();
/// Return debug info code generator.
CodeGen::CGDebugInfo *getCGDebugInfo();
/// Given a mangled name, return a declaration which mangles that way
/// which has been added to this code generator via a Handle method.
///
/// This may return null if there was no matching declaration.
const Decl *GetDeclForMangledName(llvm::StringRef MangledName);
/// Given a global declaration, return a mangled name for this declaration
/// which has been added to this code generator via a Handle method.
llvm::StringRef GetMangledName(GlobalDecl GD);
/// Return the LLVM address of the given global entity.
///
/// \param isForDefinition If true, the caller intends to define the
/// entity; the object returned will be an llvm::GlobalValue of
/// some sort. If false, the caller just intends to use the entity;
/// the object returned may be any sort of constant value, and the
/// code generator will schedule the entity for emission if a
/// definition has been registered with this code generator.
llvm::Constant *GetAddrOfGlobal(GlobalDecl decl, bool isForDefinition);
/// Create a new \c llvm::Module after calling HandleTranslationUnit. This
/// enable codegen in interactive processing environments.
llvm::Module* StartModule(llvm::StringRef ModuleName, llvm::LLVMContext &C);
};
/// CreateLLVMCodeGen - Create a CodeGenerator instance.
/// It is the responsibility of the caller to call delete on
/// the allocated CodeGenerator instance.
CodeGenerator *CreateLLVMCodeGen(DiagnosticsEngine &Diags,
llvm::StringRef ModuleName,
IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS,
const HeaderSearchOptions &HeaderSearchOpts,
const PreprocessorOptions &PreprocessorOpts,
const CodeGenOptions &CGO,
llvm::LLVMContext &C,
CoverageSourceInfo *CoverageInfo = nullptr);
} // end namespace clang
#endif
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