X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetMachine.h;h=64a923b80edfd035820b70167bbcc66166751e0b;hp=91e4715eea3afe027e5f58de9c2ff1c7ed80fd31;hb=cd52a7a381a73c53ec4ef517ad87f19808cb1a28;hpb=49837ef8111fbeace7ae6379ca733c8f8fa94cfe diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 91e4715eea3..64a923b80ed 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -15,6 +15,8 @@ #define LLVM_TARGET_TARGETMACHINE_H #include "llvm/ADT/StringRef.h" +#include "llvm/ADT/Triple.h" +#include "llvm/IR/DataLayout.h" #include "llvm/Pass.h" #include "llvm/Support/CodeGen.h" #include "llvm/Target/TargetOptions.h" @@ -24,27 +26,32 @@ namespace llvm { class InstrItineraryData; -class JITCodeEmitter; class GlobalValue; +class Mangler; +class MachineFunctionInitializer; class MCAsmInfo; class MCCodeGenInfo; class MCContext; +class MCInstrInfo; +class MCRegisterInfo; +class MCSubtargetInfo; +class MCSymbol; class Target; class DataLayout; class TargetLibraryInfo; class TargetFrameLowering; -class TargetInstrInfo; +class TargetIRAnalysis; class TargetIntrinsicInfo; -class TargetJITInfo; class TargetLowering; class TargetPassConfig; class TargetRegisterInfo; class TargetSelectionDAGInfo; class TargetSubtargetInfo; -class ScalarTargetTransformInfo; -class VectorTargetTransformInfo; +class TargetTransformInfo; class formatted_raw_ostream; class raw_ostream; +class raw_pwrite_stream; +class TargetLoweringObjectFile; // The old pass manager infrastructure is hidden in a legacy namespace now. namespace legacy { @@ -54,300 +61,216 @@ using legacy::PassManagerBase; //===----------------------------------------------------------------------===// /// -/// TargetMachine - Primary interface to the complete machine description for -/// the target machine. All target-specific information should be accessible -/// through this interface. +/// 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; + TargetMachine(const TargetMachine &) = delete; + void operator=(const TargetMachine &) = delete; protected: // Can only create subclasses. - TargetMachine(const Target &T, StringRef TargetTriple, - StringRef CPU, StringRef FS, const TargetOptions &Options); + TargetMachine(const Target &T, StringRef DataLayoutString, + const Triple &TargetTriple, StringRef CPU, StringRef FS, + const TargetOptions &Options); - /// TheTarget - The Target that this machine was created for. + /// 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; + /// For ABI type size and alignment. + const DataLayout DL; + + /// Triple string, CPU name, and target feature strings the TargetMachine + /// instance is created with. + Triple TargetTriple; std::string TargetCPU; std::string TargetFS; - /// CodeGenInfo - Low level target information such as relocation model. - const MCCodeGenInfo *CodeGenInfo; + /// Low level target information such as relocation model. Non-const to + /// allow resetting optimization level per-function. + MCCodeGenInfo *CodeGenInfo; - /// AsmInfo - Contains target specific asm information. - /// + /// 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; + const MCRegisterInfo *MRI; + const MCInstrInfo *MII; + const MCSubtargetInfo *STI; + + unsigned RequireStructuredCFG : 1; public: + mutable TargetOptions Options; + 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; } + const Triple &getTargetTriple() const { return TargetTriple; } + StringRef getTargetCPU() const { return TargetCPU; } + StringRef getTargetFeatureString() const { return TargetFS; } - 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 - // - // N.B. These objects may change during compilation. It's not safe to cache - // them between functions. - 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; } + /// Virtual method implemented by subclasses that returns a reference to that + /// target's TargetSubtargetInfo-derived member variable. + virtual const TargetSubtargetInfo *getSubtargetImpl(const Function &) const { + return nullptr; + } + virtual TargetLoweringObjectFile *getObjFileLowering() const { + return nullptr; + } - /// getSubtarget - This method returns a pointer to the specified type of + /// 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 const STC &getSubtarget() const { - return *static_cast(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; + template const STC &getSubtarget(const Function &F) const { + return *static_cast(getSubtargetImpl(F)); } - /// 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; } + /// This method returns a pointer to the DataLayout for the target. It should + /// be unchanging for every subtarget. + const DataLayout *getDataLayout() const { return &DL; } - /// 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; } + /// \brief Reset the target options based on the function's attributes. + // FIXME: Remove TargetOptions that affect per-function code generation + // from TargetMachine. + void resetTargetOptions(const Function &F) const; - /// hasMCUseCFI - Check whether we should use dwarf's .cfi_* directives. - bool hasMCUseCFI() const { return MCUseCFI; } + /// Return target specific asm information. + const MCAsmInfo *getMCAsmInfo() const { return AsmInfo; } - /// setMCUseCFI - Set whether all we should use dwarf's .cfi_* directives. - void setMCUseCFI(bool Value) { MCUseCFI = Value; } + const MCRegisterInfo *getMCRegisterInfo() const { return MRI; } + const MCInstrInfo *getMCInstrInfo() const { return MII; } + const MCSubtargetInfo *getMCSubtargetInfo() const { return STI; } - /// hasMCUseDwarfDirectory - Check whether we should use .file directives with - /// explicit directories. - bool hasMCUseDwarfDirectory() const { return MCUseDwarfDirectory; } + /// If intrinsic information is available, return it. If not, return null. + virtual const TargetIntrinsicInfo *getIntrinsicInfo() const { + return nullptr; + } - /// setMCUseDwarfDirectory - Set whether all we should use .file directives - /// with explicit directories. - void setMCUseDwarfDirectory(bool Value) { MCUseDwarfDirectory = Value; } + bool requiresStructuredCFG() const { return RequireStructuredCFG; } + void setRequiresStructuredCFG(bool Value) { RequireStructuredCFG = Value; } - /// getRelocationModel - Returns the code generation relocation model. The - /// choices are static, PIC, and dynamic-no-pic, and target default. + /// 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. + /// 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. + /// 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. + /// Returns the optimization level: None, Less, Default, or Aggressive. CodeGenOpt::Level getOptLevel() const; + /// \brief Overrides the optimization level. + void setOptLevel(CodeGenOpt::Level Level) const; + void setFastISel(bool Enable) { Options.EnableFastISel = Enable; } bool shouldPrintMachineCode() const { return Options.PrintMachineCode; } - /// getAsmVerbosityDefault - Returns the default value of asm verbosity. + /// 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(); + bool getAsmVerbosityDefault() const { + return Options.MCOptions.AsmVerbose; + } - /// setDataSections - Set if the data are emit into separate sections. - static void setDataSections(bool); + bool getUniqueSectionNames() const { return Options.UniqueSectionNames; } - /// setFunctionSections - Set if the functions are emit into separate - /// sections. - static void setFunctionSections(bool); + /// Return true if data objects should be emitted into their own section, + /// corresponds to -fdata-sections. + bool getDataSections() const { + return Options.DataSections; + } - /// \brief Register analysis passes for this target with a pass manager. - virtual void addAnalysisPasses(PassManagerBase &) {} + /// Return true if functions should be emitted into their own section, + /// corresponding to -ffunction-sections. + bool getFunctionSections() const { + return Options.FunctionSections; + } - /// 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. + /// \brief Get a \c TargetIRAnalysis appropriate for the target. + /// + /// This is used to construct the new pass manager's target IR analysis pass, + /// set up appropriately for this target machine. Even the old pass manager + /// uses this to answer queries about the IR. + virtual TargetIRAnalysis getTargetIRAnalysis(); + + /// 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) { + /// 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 &, raw_pwrite_stream &, CodeGenFileType, + bool /*DisableVerify*/ = true, AnalysisID /*StartAfter*/ = nullptr, + AnalysisID /*StopAfter*/ = nullptr, + MachineFunctionInitializer * /*MFInitializer*/ = nullptr) { 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. + /// 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 &, + virtual bool addPassesToEmitMC(PassManagerBase &, MCContext *&, + raw_pwrite_stream &, bool /*DisableVerify*/ = true) { return true; } + + void getNameWithPrefix(SmallVectorImpl &Name, const GlobalValue *GV, + Mangler &Mang, bool MayAlwaysUsePrivate = false) const; + MCSymbol *getSymbol(const GlobalValue *GV, Mangler &Mang) const; }; -/// LLVMTargetMachine - This class describes a target machine that is -/// implemented with the LLVM target-independent code generator. +/// 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, + LLVMTargetMachine(const Target &T, StringRef DataLayoutString, + const Triple &TargetTriple, StringRef CPU, StringRef FS, + TargetOptions Options, Reloc::Model RM, CodeModel::Model CM, CodeGenOpt::Level OL); void initAsmInfo(); public: - /// \brief Register analysis passes for this target with a pass manager. + /// \brief Get a TargetIRAnalysis implementation for the target. /// - /// This registers target independent analysis passes. - virtual void addAnalysisPasses(PassManagerBase &PM); + /// This analysis will produce a TTI result which uses the common code + /// generator to answer queries about the IR. + TargetIRAnalysis getTargetIRAnalysis() override; - /// createPassConfig - Create a pass configuration object to be used by - /// addPassToEmitX methods for generating a pipeline of CodeGen passes. + /// 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; - } + /// Add passes to the specified pass manager to get the specified file + /// emitted. Typically this will involve several steps of code generation. + bool addPassesToEmitFile( + PassManagerBase &PM, raw_pwrite_stream &Out, CodeGenFileType FileType, + bool DisableVerify = true, AnalysisID StartAfter = nullptr, + AnalysisID StopAfter = nullptr, + MachineFunctionInitializer *MFInitializer = nullptr) override; + + /// 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. + bool addPassesToEmitMC(PassManagerBase &PM, MCContext *&Ctx, + raw_pwrite_stream &OS, + bool DisableVerify = true) override; }; } // End llvm namespace