//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file describes the general parts of a Target machine.
+// This file defines the TargetMachine and LLVMTargetMachine classes.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_TARGETMACHINE_H
#define LLVM_TARGET_TARGETMACHINE_H
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetInstrItineraries.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/CodeGen.h"
+#include "llvm/Target/TargetOptions.h"
+#include "llvm/TargetTransformInfo.h"
+#include "llvm/Target/TargetTransformImpl.h"
+#include "llvm/ADT/StringRef.h"
#include <cassert>
+#include <string>
namespace llvm {
-class TargetSubtarget;
+class InstrItineraryData;
+class JITCodeEmitter;
+class GlobalValue;
+class MCAsmInfo;
+class MCCodeGenInfo;
+class MCContext;
+class PassManagerBase;
+class Target;
+class DataLayout;
+class TargetFrameLowering;
class TargetInstrInfo;
-class TargetInstrDescriptor;
+class TargetIntrinsicInfo;
class TargetJITInfo;
class TargetLowering;
-class TargetSchedInfo;
-class SparcV9RegInfo;
-class TargetFrameInfo;
-class MachineCodeEmitter;
-class MRegisterInfo;
-class FunctionPassManager;
-class PassManager;
-class Pass;
-
-// Relocation model types.
-namespace Reloc {
- enum Model {
- Default,
- Static,
- PIC,
- DynamicNoPIC
- };
-}
+class TargetPassConfig;
+class TargetRegisterInfo;
+class TargetSelectionDAGInfo;
+class TargetSubtargetInfo;
+class formatted_raw_ostream;
+class raw_ostream;
//===----------------------------------------------------------------------===//
///
/// through this interface.
///
class TargetMachine {
- const std::string Name;
- const TargetData DataLayout; // Calculates type size & alignment
-
- TargetMachine(const TargetMachine&); // DO NOT IMPLEMENT
- void operator=(const TargetMachine&); // DO NOT IMPLEMENT
-protected: // Can only create subclasses...
- TargetMachine(const std::string &name, bool LittleEndian = false,
- unsigned char PtrSize = 8, unsigned char PtrAl = 8,
- unsigned char DoubleAl = 8, unsigned char FloatAl = 4,
- unsigned char LongAl = 8, unsigned char IntAl = 4,
- unsigned char ShortAl = 2, unsigned char ByteAl = 1,
- unsigned char BoolAl = 1);
-
- TargetMachine(const std::string &name, const TargetData &TD);
-
- /// This constructor is used for targets that support arbitrary TargetData
- /// layouts, like the C backend. It initializes the TargetData to match that
- /// of the specified module.
- ///
- TargetMachine(const std::string &name, const Module &M);
+ 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);
/// getSubtargetImpl - virtual method implemented by subclasses that returns
- /// a reference to that target's TargetSubtarget-derived member variable.
- virtual const TargetSubtarget *getSubtargetImpl() const { return 0; }
+ /// a reference to that target's TargetSubtargetInfo-derived member variable.
+ virtual const TargetSubtargetInfo *getSubtargetImpl() const { return 0; }
+
+ /// 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();
- /// getModuleMatchQuality - This static method should be implemented by
- /// targets to indicate how closely they match the specified module. This is
- /// used by the LLC tool to determine which target to use when an explicit
- /// -march option is not specified. If a target returns zero, it will never
- /// be chosen without an explicit -march option.
- static unsigned getModuleMatchQuality(const Module &M) { return 0; }
+ const Target &getTarget() const { return TheTarget; }
- /// getJITMatchQuality - This static method should be implemented by targets
- /// that provide JIT capabilities to indicate how suitable they are for
- /// execution on the current host. If a value of 0 is returned, the target
- /// will not be used unless an explicit -march option is used.
- static unsigned getJITMatchQuality() { return 0; }
+ const StringRef getTargetTriple() const { return TargetTriple; }
+ const StringRef getTargetCPU() const { return TargetCPU; }
+ const StringRef getTargetFeatureString() const { return TargetFS; }
-
- const std::string &getName() const { return Name; }
+ TargetOptions Options;
// Interfaces to the major aspects of target machine information:
// -- Instruction opcode and operand information
// -- Stack frame information
// -- Selection DAG lowering information
//
- virtual const TargetInstrInfo *getInstrInfo() const { return 0; }
- virtual const TargetFrameInfo *getFrameInfo() const { return 0; }
- virtual TargetLowering *getTargetLowering() const { return 0; }
- const TargetData &getTargetData() const { return DataLayout; }
+ 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; }
+ virtual const ScalarTargetTransformInfo*
+ getScalarTargetTransformInfo() const { return 0; }
+ virtual const VectorTargetTransformInfo*
+ getVectorTargetTransformInfo() 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
- /// TargetSubtarget. In debug builds, it verifies that the object being
+ /// TargetSubtargetInfo. In debug builds, it verifies that the object being
/// returned is of the correct type.
template<typename STC> const STC &getSubtarget() const {
- const TargetSubtarget *TST = getSubtargetImpl();
- assert(TST && dynamic_cast<const STC*>(TST) &&
- "Not the right kind of subtarget!");
- return *static_cast<const STC*>(TST);
+ 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 MRegisterInfo* getRegisterInfo() const { return 0; }
+ 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 InstrItineraryData();
+ virtual const InstrItineraryData *getInstrItineraryData() const {
+ return 0;
}
- // These are deprecated interfaces.
- virtual const TargetSchedInfo *getSchedInfo() const { return 0; }
- virtual const SparcV9RegInfo *getRegInfo() 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.
- static Reloc::Model getRelocationModel();
+ 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;
- /// setRelocationModel - Sets the code generation relocation model.
- static void setRelocationModel(Reloc::Model Model);
+ /// 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);
/// CodeGenFileType - These enums are meant to be passed into
- /// addPassesToEmitFile to indicate what type of file to emit.
+ /// 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 {
- AssemblyFile, ObjectFile, DynamicLibrary
+ 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. If Fast is set to true, the code generator should emit
- /// code as fast as possible, without regard for compile time. This method
- /// should return true if emission of this file type is not supported.
+ /// 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 addPassesToEmitFile(PassManager &PM, std::ostream &Out,
- CodeGenFileType FileType, bool Fast) {
+ 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:
+ /// 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 MachineCodeEmitter object to handle
+ /// 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 should returns true if machine code emission is
+ /// of functions. This method returns true if machine code emission is
/// not supported.
///
- virtual bool addPassesToEmitMachineCode(FunctionPassManager &PM,
- MachineCodeEmitter &MCE) {
+ 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;
}
};
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