llvm/llvm/include/llvm/Target/TargetMachine.h

//===-- llvm/Target/TargetMachine.h - Target Information --------*- 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 TargetMachine and LLVMTargetMachine classes.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TARGET_TARGETMACHINE_H
#define LLVM_TARGET_TARGETMACHINE_H

#include "llvm/ADT/StringRef.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/PGOOptions.h"
#include "llvm/Target/CGPassBuilderOption.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/TargetParser/Triple.h"
#include <optional>
#include <string>
#include <utility>

namespace llvm {

class AAManager;
ModulePassManager;

class Function;
class GlobalValue;
class MachineModuleInfoWrapperPass;
class Mangler;
class MCAsmInfo;
class MCContext;
class MCInstrInfo;
class MCRegisterInfo;
class MCStreamer;
class MCSubtargetInfo;
class MCSymbol;
class raw_pwrite_stream;
class PassBuilder;
class PassInstrumentationCallbacks;
struct PerFunctionMIParsingState;
class SMDiagnostic;
class SMRange;
class Target;
class TargetIntrinsicInfo;
class TargetIRAnalysis;
class TargetTransformInfo;
class TargetLoweringObjectFile;
class TargetPassConfig;
class TargetSubtargetInfo;

// The old pass manager infrastructure is hidden in a legacy namespace now.
namespace legacy {
class PassManagerBase;
}
PassManagerBase;

struct MachineFunctionInfo;
namespace yaml {
struct MachineFunctionInfo;
}

//===----------------------------------------------------------------------===//
///
/// Primary interface to the complete machine description for the target
/// machine.  All target-specific information should be accessible through this
/// interface.
///
class TargetMachine { … };

/// This class describes a target machine that is implemented with the LLVM
/// target-independent code generator.
///
class LLVMTargetMachine : public TargetMachine { … };

/// Helper method for getting the code model, returning Default if
/// CM does not have a value. The tiny and kernel models will produce
/// an error, so targets that support them or require more complex codemodel
/// selection logic should implement and call their own getEffectiveCodeModel.
inline CodeModel::Model
getEffectiveCodeModel(std::optional<CodeModel::Model> CM,
                      CodeModel::Model Default) { … }

} // end namespace llvm

#endif // LLVM_TARGET_TARGETMACHINE_H