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//===---- TargetInfo.h - Encapsulate target details -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// These classes wrap the information about a call or function
// definition used to handle ABI compliancy.
//
//===----------------------------------------------------------------------===//
#ifndef CLANG_CODEGEN_TARGETINFO_H
#define CLANG_CODEGEN_TARGETINFO_H
namespace llvm {
class GlobalValue;
}
namespace clang {
class ABIInfo;
class Decl;
namespace CodeGen {
class CodeGenModule;
}
/// TargetCodeGenInfo - This class organizes various target-specific
/// codegeneration issues, like target-specific attributes, builtins and so
/// on.
class TargetCodeGenInfo {
ABIInfo *Info;
public:
// WARNING: Acquires the ownership of ABIInfo.
TargetCodeGenInfo(ABIInfo *info = 0):Info(info) { }
virtual ~TargetCodeGenInfo();
/// getABIInfo() - Returns ABI info helper for the target.
const ABIInfo& getABIInfo() const { return *Info; }
/// SetTargetAttributes - Provides a convenient hook to handle extra
/// target-specific attributes for the given global.
virtual void SetTargetAttributes(const Decl *D, llvm::GlobalValue *GV,
CodeGen::CodeGenModule &M) const { }
/// Controls whether __builtin_extend_pointer should sign-extend
/// pointers to uint64_t or zero-extend them (the default). Has
/// no effect for targets:
/// - that have 64-bit pointers, or
/// - that cannot address through registers larger than pointers, or
/// - that implicitly ignore/truncate the top bits when addressing
/// through such registers.
virtual bool extendPointerWithSExt() const { return false; }
};
}
#endif // CLANG_CODEGEN_TARGETINFO_H
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