mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-26 06:29:20 +00:00
4cb1f5f406
This doesn't reset all of the target options within the TargetOptions object. This is because some of those are ABI-specific and must be determined if it's okay to change those on the fly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176986 91177308-0d34-0410-b5e6-96231b3b80d8
346 lines
13 KiB
C++
346 lines
13 KiB
C++
//===-- llvm/Target/TargetMachine.h - Target Information --------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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/Pass.h"
|
|
#include "llvm/Support/CodeGen.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include <cassert>
|
|
#include <string>
|
|
|
|
namespace llvm {
|
|
|
|
class InstrItineraryData;
|
|
class JITCodeEmitter;
|
|
class GlobalValue;
|
|
class MCAsmInfo;
|
|
class MCCodeGenInfo;
|
|
class MCContext;
|
|
class PassManagerBase;
|
|
class Target;
|
|
class DataLayout;
|
|
class TargetFrameLowering;
|
|
class TargetInstrInfo;
|
|
class TargetIntrinsicInfo;
|
|
class TargetJITInfo;
|
|
class TargetLowering;
|
|
class TargetPassConfig;
|
|
class TargetRegisterInfo;
|
|
class TargetSelectionDAGInfo;
|
|
class TargetSubtargetInfo;
|
|
class ScalarTargetTransformInfo;
|
|
class VectorTargetTransformInfo;
|
|
class formatted_raw_ostream;
|
|
class raw_ostream;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// TargetMachine - Primary interface to the complete machine description for
|
|
/// the target machine. All target-specific information should be accessible
|
|
/// through this interface.
|
|
///
|
|
class TargetMachine {
|
|
TargetMachine(const TargetMachine &) LLVM_DELETED_FUNCTION;
|
|
void operator=(const TargetMachine &) LLVM_DELETED_FUNCTION;
|
|
protected: // Can only create subclasses.
|
|
TargetMachine(const Target &T, StringRef TargetTriple,
|
|
StringRef CPU, StringRef FS, const TargetOptions &Options);
|
|
|
|
/// TheTarget - The Target that this machine was created for.
|
|
const Target &TheTarget;
|
|
|
|
/// TargetTriple, TargetCPU, TargetFS - Triple string, CPU name, and target
|
|
/// feature strings the TargetMachine instance is created with.
|
|
std::string TargetTriple;
|
|
std::string TargetCPU;
|
|
std::string TargetFS;
|
|
|
|
/// CodeGenInfo - Low level target information such as relocation model.
|
|
const MCCodeGenInfo *CodeGenInfo;
|
|
|
|
/// AsmInfo - Contains target specific asm information.
|
|
///
|
|
const MCAsmInfo *AsmInfo;
|
|
|
|
unsigned MCRelaxAll : 1;
|
|
unsigned MCNoExecStack : 1;
|
|
unsigned MCSaveTempLabels : 1;
|
|
unsigned MCUseLoc : 1;
|
|
unsigned MCUseCFI : 1;
|
|
unsigned MCUseDwarfDirectory : 1;
|
|
|
|
public:
|
|
virtual ~TargetMachine();
|
|
|
|
const Target &getTarget() const { return TheTarget; }
|
|
|
|
const StringRef getTargetTriple() const { return TargetTriple; }
|
|
const StringRef getTargetCPU() const { return TargetCPU; }
|
|
const StringRef getTargetFeatureString() const { return TargetFS; }
|
|
|
|
/// getSubtargetImpl - virtual method implemented by subclasses that returns
|
|
/// a reference to that target's TargetSubtargetInfo-derived member variable.
|
|
virtual const TargetSubtargetInfo *getSubtargetImpl() const { return 0; }
|
|
|
|
mutable TargetOptions Options;
|
|
|
|
/// \brief Reset the target options based on the function's attributes.
|
|
void resetTargetOptions(const MachineFunction *MF) const;
|
|
|
|
// Interfaces to the major aspects of target machine information:
|
|
// -- Instruction opcode and operand information
|
|
// -- Pipelines and scheduling information
|
|
// -- Stack frame information
|
|
// -- Selection DAG lowering information
|
|
//
|
|
virtual const TargetInstrInfo *getInstrInfo() const { return 0; }
|
|
virtual const TargetFrameLowering *getFrameLowering() const { return 0; }
|
|
virtual const TargetLowering *getTargetLowering() const { return 0; }
|
|
virtual const TargetSelectionDAGInfo *getSelectionDAGInfo() const{ return 0; }
|
|
virtual const DataLayout *getDataLayout() const { return 0; }
|
|
|
|
/// getMCAsmInfo - Return target specific asm information.
|
|
///
|
|
const MCAsmInfo *getMCAsmInfo() const { return AsmInfo; }
|
|
|
|
/// getSubtarget - This method returns a pointer to the specified type of
|
|
/// TargetSubtargetInfo. In debug builds, it verifies that the object being
|
|
/// returned is of the correct type.
|
|
template<typename STC> const STC &getSubtarget() const {
|
|
return *static_cast<const STC*>(getSubtargetImpl());
|
|
}
|
|
|
|
/// getRegisterInfo - If register information is available, return it. If
|
|
/// not, return null. This is kept separate from RegInfo until RegInfo has
|
|
/// details of graph coloring register allocation removed from it.
|
|
///
|
|
virtual const TargetRegisterInfo *getRegisterInfo() const { return 0; }
|
|
|
|
/// getIntrinsicInfo - If intrinsic information is available, return it. If
|
|
/// not, return null.
|
|
///
|
|
virtual const TargetIntrinsicInfo *getIntrinsicInfo() const { return 0; }
|
|
|
|
/// getJITInfo - If this target supports a JIT, return information for it,
|
|
/// otherwise return null.
|
|
///
|
|
virtual TargetJITInfo *getJITInfo() { return 0; }
|
|
|
|
/// getInstrItineraryData - Returns instruction itinerary data for the target
|
|
/// or specific subtarget.
|
|
///
|
|
virtual const InstrItineraryData *getInstrItineraryData() const {
|
|
return 0;
|
|
}
|
|
|
|
/// hasMCRelaxAll - Check whether all machine code instructions should be
|
|
/// relaxed.
|
|
bool hasMCRelaxAll() const { return MCRelaxAll; }
|
|
|
|
/// setMCRelaxAll - Set whether all machine code instructions should be
|
|
/// relaxed.
|
|
void setMCRelaxAll(bool Value) { MCRelaxAll = Value; }
|
|
|
|
/// hasMCSaveTempLabels - Check whether temporary labels will be preserved
|
|
/// (i.e., not treated as temporary).
|
|
bool hasMCSaveTempLabels() const { return MCSaveTempLabels; }
|
|
|
|
/// setMCSaveTempLabels - Set whether temporary labels will be preserved
|
|
/// (i.e., not treated as temporary).
|
|
void setMCSaveTempLabels(bool Value) { MCSaveTempLabels = Value; }
|
|
|
|
/// hasMCNoExecStack - Check whether an executable stack is not needed.
|
|
bool hasMCNoExecStack() const { return MCNoExecStack; }
|
|
|
|
/// setMCNoExecStack - Set whether an executabel stack is not needed.
|
|
void setMCNoExecStack(bool Value) { MCNoExecStack = Value; }
|
|
|
|
/// hasMCUseLoc - Check whether we should use dwarf's .loc directive.
|
|
bool hasMCUseLoc() const { return MCUseLoc; }
|
|
|
|
/// setMCUseLoc - Set whether all we should use dwarf's .loc directive.
|
|
void setMCUseLoc(bool Value) { MCUseLoc = Value; }
|
|
|
|
/// hasMCUseCFI - Check whether we should use dwarf's .cfi_* directives.
|
|
bool hasMCUseCFI() const { return MCUseCFI; }
|
|
|
|
/// setMCUseCFI - Set whether all we should use dwarf's .cfi_* directives.
|
|
void setMCUseCFI(bool Value) { MCUseCFI = Value; }
|
|
|
|
/// hasMCUseDwarfDirectory - Check whether we should use .file directives with
|
|
/// explicit directories.
|
|
bool hasMCUseDwarfDirectory() const { return MCUseDwarfDirectory; }
|
|
|
|
/// setMCUseDwarfDirectory - Set whether all we should use .file directives
|
|
/// with explicit directories.
|
|
void setMCUseDwarfDirectory(bool Value) { MCUseDwarfDirectory = Value; }
|
|
|
|
/// getRelocationModel - Returns the code generation relocation model. The
|
|
/// choices are static, PIC, and dynamic-no-pic, and target default.
|
|
Reloc::Model getRelocationModel() const;
|
|
|
|
/// getCodeModel - Returns the code model. The choices are small, kernel,
|
|
/// medium, large, and target default.
|
|
CodeModel::Model getCodeModel() const;
|
|
|
|
/// getTLSModel - Returns the TLS model which should be used for the given
|
|
/// global variable.
|
|
TLSModel::Model getTLSModel(const GlobalValue *GV) const;
|
|
|
|
/// getOptLevel - Returns the optimization level: None, Less,
|
|
/// Default, or Aggressive.
|
|
CodeGenOpt::Level getOptLevel() const;
|
|
|
|
void setFastISel(bool Enable) { Options.EnableFastISel = Enable; }
|
|
|
|
bool shouldPrintMachineCode() const { return Options.PrintMachineCode; }
|
|
|
|
/// getAsmVerbosityDefault - Returns the default value of asm verbosity.
|
|
///
|
|
static bool getAsmVerbosityDefault();
|
|
|
|
/// setAsmVerbosityDefault - Set the default value of asm verbosity. Default
|
|
/// is false.
|
|
static void setAsmVerbosityDefault(bool);
|
|
|
|
/// getDataSections - Return true if data objects should be emitted into their
|
|
/// own section, corresponds to -fdata-sections.
|
|
static bool getDataSections();
|
|
|
|
/// getFunctionSections - Return true if functions should be emitted into
|
|
/// their own section, corresponding to -ffunction-sections.
|
|
static bool getFunctionSections();
|
|
|
|
/// setDataSections - Set if the data are emit into separate sections.
|
|
static void setDataSections(bool);
|
|
|
|
/// setFunctionSections - Set if the functions are emit into separate
|
|
/// sections.
|
|
static void setFunctionSections(bool);
|
|
|
|
/// \brief Register analysis passes for this target with a pass manager.
|
|
virtual void addAnalysisPasses(PassManagerBase &) {}
|
|
|
|
/// CodeGenFileType - These enums are meant to be passed into
|
|
/// addPassesToEmitFile to indicate what type of file to emit, and returned by
|
|
/// it to indicate what type of file could actually be made.
|
|
enum CodeGenFileType {
|
|
CGFT_AssemblyFile,
|
|
CGFT_ObjectFile,
|
|
CGFT_Null // Do not emit any output.
|
|
};
|
|
|
|
/// addPassesToEmitFile - Add passes to the specified pass manager to get the
|
|
/// specified file emitted. Typically this will involve several steps of code
|
|
/// generation. This method should return true if emission of this file type
|
|
/// is not supported, or false on success.
|
|
virtual bool addPassesToEmitFile(PassManagerBase &,
|
|
formatted_raw_ostream &,
|
|
CodeGenFileType,
|
|
bool /*DisableVerify*/ = true,
|
|
AnalysisID StartAfter = 0,
|
|
AnalysisID StopAfter = 0) {
|
|
return true;
|
|
}
|
|
|
|
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
|
|
/// get machine code emitted. This uses a JITCodeEmitter object to handle
|
|
/// actually outputting the machine code and resolving things like the address
|
|
/// of functions. This method returns true if machine code emission is
|
|
/// not supported.
|
|
///
|
|
virtual bool addPassesToEmitMachineCode(PassManagerBase &,
|
|
JITCodeEmitter &,
|
|
bool /*DisableVerify*/ = true) {
|
|
return true;
|
|
}
|
|
|
|
/// addPassesToEmitMC - Add passes to the specified pass manager to get
|
|
/// machine code emitted with the MCJIT. This method returns true if machine
|
|
/// code is not supported. It fills the MCContext Ctx pointer which can be
|
|
/// used to build custom MCStreamer.
|
|
///
|
|
virtual bool addPassesToEmitMC(PassManagerBase &,
|
|
MCContext *&,
|
|
raw_ostream &,
|
|
bool /*DisableVerify*/ = true) {
|
|
return true;
|
|
}
|
|
};
|
|
|
|
/// LLVMTargetMachine - This class describes a target machine that is
|
|
/// implemented with the LLVM target-independent code generator.
|
|
///
|
|
class LLVMTargetMachine : public TargetMachine {
|
|
protected: // Can only create subclasses.
|
|
LLVMTargetMachine(const Target &T, StringRef TargetTriple,
|
|
StringRef CPU, StringRef FS, TargetOptions Options,
|
|
Reloc::Model RM, CodeModel::Model CM,
|
|
CodeGenOpt::Level OL);
|
|
|
|
public:
|
|
/// \brief Register analysis passes for this target with a pass manager.
|
|
///
|
|
/// This registers target independent analysis passes.
|
|
virtual void addAnalysisPasses(PassManagerBase &PM);
|
|
|
|
/// createPassConfig - Create a pass configuration object to be used by
|
|
/// addPassToEmitX methods for generating a pipeline of CodeGen passes.
|
|
virtual TargetPassConfig *createPassConfig(PassManagerBase &PM);
|
|
|
|
/// addPassesToEmitFile - Add passes to the specified pass manager to get the
|
|
/// specified file emitted. Typically this will involve several steps of code
|
|
/// generation.
|
|
virtual bool addPassesToEmitFile(PassManagerBase &PM,
|
|
formatted_raw_ostream &Out,
|
|
CodeGenFileType FileType,
|
|
bool DisableVerify = true,
|
|
AnalysisID StartAfter = 0,
|
|
AnalysisID StopAfter = 0);
|
|
|
|
/// addPassesToEmitMachineCode - Add passes to the specified pass manager to
|
|
/// get machine code emitted. This uses a JITCodeEmitter object to handle
|
|
/// actually outputting the machine code and resolving things like the address
|
|
/// of functions. This method returns true if machine code emission is
|
|
/// not supported.
|
|
///
|
|
virtual bool addPassesToEmitMachineCode(PassManagerBase &PM,
|
|
JITCodeEmitter &MCE,
|
|
bool DisableVerify = true);
|
|
|
|
/// addPassesToEmitMC - Add passes to the specified pass manager to get
|
|
/// machine code emitted with the MCJIT. This method returns true if machine
|
|
/// code is not supported. It fills the MCContext Ctx pointer which can be
|
|
/// used to build custom MCStreamer.
|
|
///
|
|
virtual bool addPassesToEmitMC(PassManagerBase &PM,
|
|
MCContext *&Ctx,
|
|
raw_ostream &OS,
|
|
bool DisableVerify = true);
|
|
|
|
/// addCodeEmitter - This pass should be overridden by the target to add a
|
|
/// code emitter, if supported. If this is not supported, 'true' should be
|
|
/// returned.
|
|
virtual bool addCodeEmitter(PassManagerBase &,
|
|
JITCodeEmitter &) {
|
|
return true;
|
|
}
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|