X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetMachine.h;h=d707e7c029303166369a48dc84b7a8db16ddedba;hp=7728f207075162d389f5c0e73a8e931e272fabbd;hb=93204d28b863e1ca28c99188c92bf8658da82736;hpb=af100b03507c759202523756c1994cecbd191f72 diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 7728f207075..d707e7c0293 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" @@ -26,24 +28,30 @@ namespace llvm { class InstrItineraryData; 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 TargetIRAnalysis; class TargetIntrinsicInfo; 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 { @@ -53,34 +61,46 @@ 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; + /// DataLayout for the target: keep ABI type size and alignment. + /// + /// The DataLayout is created based on the string representation provided + /// during construction. It is kept here only to avoid reparsing the string + /// but should not really be used during compilation, because it has an + /// internal cache that is context specific. + 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. - /// Non-const to allow resetting optimization level per-function. + /// 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; + const MCRegisterInfo *MRI; + const MCInstrInfo *MII; + const MCSubtargetInfo *STI; + unsigned RequireStructuredCFG : 1; public: @@ -90,41 +110,56 @@ public: const Target &getTarget() const { return TheTarget; } - StringRef getTargetTriple() const { return TargetTriple; } + const Triple &getTargetTriple() const { return TargetTriple; } StringRef getTargetCPU() const { return TargetCPU; } 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 { + /// 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 const TargetSubtargetInfo *getSubtargetImpl(const Function &) const { - return getSubtargetImpl(); + 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()); + template const STC &getSubtarget(const Function &F) const { + return *static_cast(getSubtargetImpl(F)); } - template const STC &getSubtarget(const Function *) const { - return *static_cast(getSubtargetImpl()); + + /// Create a DataLayout. + const DataLayout createDataLayout() const { return DL; } + + /// Test if a DataLayout if compatible with the CodeGen for this target. + /// + /// The LLVM Module owns a DataLayout that is used for the target independent + /// optimizations and code generation. This hook provides a target specific + /// check on the validity of this DataLayout. + bool isCompatibleDataLayout(const DataLayout &Candidate) const { + return DL == Candidate; } + /// Get the pointer size for this target. + /// + /// This is the only time the DataLayout in the TargetMachine is used. + unsigned getPointerSize() const { return DL.getPointerSize(); } + /// \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; - /// getMCAsmInfo - Return target specific asm information. - /// + /// Return target specific asm information. const MCAsmInfo *getMCAsmInfo() const { return AsmInfo; } - /// getIntrinsicInfo - If intrinsic information is available, return it. If - /// not, return null. - /// + const MCRegisterInfo *getMCRegisterInfo() const { return MRI; } + const MCInstrInfo *getMCInstrInfo() const { return MII; } + const MCSubtargetInfo *getMCSubtargetInfo() const { return STI; } + + /// If intrinsic information is available, return it. If not, return null. virtual const TargetIntrinsicInfo *getIntrinsicInfo() const { return nullptr; } @@ -132,20 +167,18 @@ public: 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. @@ -155,62 +188,61 @@ public: bool shouldPrintMachineCode() const { return Options.PrintMachineCode; } - /// getAsmVerbosityDefault - Returns the default value of asm verbosity. + /// Returns the default value of asm verbosity. /// - bool getAsmVerbosityDefault() const ; - - /// setAsmVerbosityDefault - Set the default value of asm verbosity. Default - /// is false. - void setAsmVerbosityDefault(bool); - - /// getDataSections - Return true if data objects should be emitted into their - /// own section, corresponds to -fdata-sections. - bool getDataSections() const; - - /// getFunctionSections - Return true if functions should be emitted into - /// their own section, corresponding to -ffunction-sections. - bool getFunctionSections() const; + bool getAsmVerbosityDefault() const { + return Options.MCOptions.AsmVerbose; + } - /// setDataSections - Set if the data are emit into separate sections. - void setDataSections(bool); + bool getUniqueSectionNames() const { return Options.UniqueSectionNames; } - /// setFunctionSections - Set if the functions are emit into separate - /// sections. - 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*/ = nullptr, - AnalysisID /*StopAfter*/ = nullptr) { + /// 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 /*StartBefore*/ = nullptr, + 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; } @@ -220,42 +252,43 @@ public: 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. - void addAnalysisPasses(PassManagerBase &PM) override; + /// 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. - bool addPassesToEmitFile(PassManagerBase &PM, formatted_raw_ostream &Out, - CodeGenFileType FileType, bool DisableVerify = true, - AnalysisID StartAfter = nullptr, - AnalysisID StopAfter = nullptr) override; - - /// 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 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 StartBefore = nullptr, + 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_ostream &OS, bool DisableVerify = true) override; + raw_pwrite_stream &OS, + bool DisableVerify = true) override; }; } // End llvm namespace