minix/external/bsd/llvm/dist/clang/lib/CodeGen/ABIInfo.h
Lionel Sambuc f4a2713ac8 Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
2014-07-28 17:05:57 +02:00

79 lines
2.3 KiB
C++

//===----- ABIInfo.h - ABI information access & encapsulation ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef CLANG_CODEGEN_ABIINFO_H
#define CLANG_CODEGEN_ABIINFO_H
#include "clang/AST/Type.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/CallingConv.h"
namespace llvm {
class Value;
class LLVMContext;
class DataLayout;
}
namespace clang {
class ASTContext;
class TargetInfo;
namespace CodeGen {
class CGCXXABI;
class CGFunctionInfo;
class CodeGenFunction;
class CodeGenTypes;
}
// FIXME: All of this stuff should be part of the target interface
// somehow. It is currently here because it is not clear how to factor
// the targets to support this, since the Targets currently live in a
// layer below types n'stuff.
/// ABIInfo - Target specific hooks for defining how a type should be
/// passed or returned from functions.
class ABIInfo {
public:
CodeGen::CodeGenTypes &CGT;
protected:
llvm::CallingConv::ID RuntimeCC;
public:
ABIInfo(CodeGen::CodeGenTypes &cgt)
: CGT(cgt), RuntimeCC(llvm::CallingConv::C) {}
virtual ~ABIInfo();
CodeGen::CGCXXABI &getCXXABI() const;
ASTContext &getContext() const;
llvm::LLVMContext &getVMContext() const;
const llvm::DataLayout &getDataLayout() const;
const TargetInfo &getTarget() const;
/// Return the calling convention to use for system runtime
/// functions.
llvm::CallingConv::ID getRuntimeCC() const {
return RuntimeCC;
}
virtual void computeInfo(CodeGen::CGFunctionInfo &FI) const = 0;
/// EmitVAArg - Emit the target dependent code to load a value of
/// \arg Ty from the va_list pointed to by \arg VAListAddr.
// FIXME: This is a gaping layering violation if we wanted to drop
// the ABI information any lower than CodeGen. Of course, for
// VAArg handling it has to be at this level; there is no way to
// abstract this out.
virtual llvm::Value *EmitVAArg(llvm::Value *VAListAddr, QualType Ty,
CodeGen::CodeGenFunction &CGF) const = 0;
};
} // end namespace clang
#endif