X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetMachine.h;h=91e4715eea3afe027e5f58de9c2ff1c7ed80fd31;hb=b05bddb4bae4e693225df4c517d9b368d923f1b3;hp=267690582302ab6db637cc1ad92ad05e402f5838;hpb=0823d2a654cb3a075016f6efd21359ed4f5aca21;p=oota-llvm.git diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 26769058230..91e4715eea3 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -14,81 +14,43 @@ #ifndef LLVM_TARGET_TARGETMACHINE_H #define LLVM_TARGET_TARGETMACHINE_H -#include "llvm/Target/TargetInstrItineraries.h" +#include "llvm/ADT/StringRef.h" +#include "llvm/Pass.h" +#include "llvm/Support/CodeGen.h" +#include "llvm/Target/TargetOptions.h" #include #include namespace llvm { -class Target; +class InstrItineraryData; +class JITCodeEmitter; +class GlobalValue; class MCAsmInfo; -class TargetData; -class TargetSubtarget; +class MCCodeGenInfo; +class MCContext; +class Target; +class DataLayout; +class TargetLibraryInfo; +class TargetFrameLowering; class TargetInstrInfo; class TargetIntrinsicInfo; class TargetJITInfo; class TargetLowering; -class TargetFrameInfo; -class MachineCodeEmitter; -class JITCodeEmitter; -class ObjectCodeEmitter; +class TargetPassConfig; class TargetRegisterInfo; -class PassManagerBase; -class PassManager; -class Pass; -class TargetMachOWriterInfo; -class TargetELFWriterInfo; +class TargetSelectionDAGInfo; +class TargetSubtargetInfo; +class ScalarTargetTransformInfo; +class VectorTargetTransformInfo; class formatted_raw_ostream; +class raw_ostream; -// Relocation model types. -namespace Reloc { - enum Model { - Default, - Static, - PIC_, // Cannot be named PIC due to collision with -DPIC - DynamicNoPIC - }; -} - -// Code model types. -namespace CodeModel { - enum Model { - Default, - Small, - Kernel, - Medium, - Large - }; -} - -namespace FileModel { - enum Model { - Error, - None, - AsmFile, - MachOFile, - ElfFile - }; -} - -// Code generation optimization level. -namespace CodeGenOpt { - enum Level { - None, // -O0 - Less, // -O1 - Default, // -O2, -Os - Aggressive // -O3 - }; -} - -// Specify if we should encode the LSDA pointer in the FDE as 4- or 8-bytes. -namespace DwarfLSDAEncoding { - enum Encoding { - Default, - FourByte, - EightByte - }; +// The old pass manager infrastructure is hidden in a legacy namespace now. +namespace legacy { +class PassManagerBase; } +using legacy::PassManagerBase; //===----------------------------------------------------------------------===// /// @@ -97,44 +59,74 @@ namespace DwarfLSDAEncoding { /// through this interface. /// class TargetMachine { - TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT - void operator=(const TargetMachine &); // DO NOT IMPLEMENT + TargetMachine(const TargetMachine &) LLVM_DELETED_FUNCTION; + void operator=(const TargetMachine &) LLVM_DELETED_FUNCTION; protected: // Can only create subclasses. - TargetMachine(const Target &); - - /// 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; } + 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 TargetFrameInfo *getFrameInfo() const { return 0; } - virtual TargetLowering *getTargetLowering() const { return 0; } - virtual const TargetData *getTargetData() const { return 0; } - + // 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; } - + /// 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 const STC &getSubtarget() const { return *static_cast(getSubtargetImpl()); @@ -145,7 +137,7 @@ public: /// 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. /// @@ -155,39 +147,75 @@ public: /// 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; } - /// getMachOWriterInfo - If this target supports a Mach-O writer, return - /// information for it, otherwise return null. - /// - virtual const TargetMachOWriterInfo *getMachOWriterInfo() 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; } - /// getELFWriterInfo - If this target supports an ELF writer, return - /// information for it, otherwise return null. - /// - virtual const TargetELFWriterInfo *getELFWriterInfo() const { return 0; } + /// 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(); - - /// setRelocationModel - Sets the code generation relocation model. - /// - static void setRelocationModel(Reloc::Model Model); + Reloc::Model getRelocationModel() const; /// getCodeModel - Returns the code model. The choices are small, kernel, /// medium, large, and target default. - static CodeModel::Model getCodeModel(); + CodeModel::Model getCodeModel() const; - /// setCodeModel - Sets the code model. - /// - static void setCodeModel(CodeModel::Model Model); + /// 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. /// @@ -197,104 +225,67 @@ public: /// is false. static void setAsmVerbosityDefault(bool); - /// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are - /// 4-byte, 8-byte, and target default. The CIE is hard-coded to indicate that - /// the LSDA pointer in the FDE section is an "sdata4", and should be encoded - /// as a 4-byte pointer by default. However, some systems may require a - /// different size due to bugs or other conditions. We will default to a - /// 4-byte encoding unless the system tells us otherwise. - /// - /// FIXME: This call-back isn't good! We should be using the correct encoding - /// regardless of the system. However, there are some systems which have bugs - /// that prevent this from occuring. - virtual DwarfLSDAEncoding::Encoding getLSDAEncoding() const { - return DwarfLSDAEncoding::Default; - } + /// 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. + /// 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. }; - /// getEnableTailMergeDefault - the default setting for -enable-tail-merge - /// on this target. User flag overrides. - virtual bool getEnableTailMergeDefault() const { return true; } - /// 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 FileModel::Error if emission of this file type - /// is not supported. - /// - virtual FileModel::Model addPassesToEmitFile(PassManagerBase &, - formatted_raw_ostream &, - CodeGenFileType, - CodeGenOpt::Level) { - return FileModel::None; - } - - /// addPassesToEmitFileFinish - If the passes to emit the specified file had - /// to be split up (e.g., to add an object writer pass), this method can be - /// used to finish up adding passes to emit the file, if necessary. - /// - virtual bool addPassesToEmitFileFinish(PassManagerBase &, - MachineCodeEmitter *, - CodeGenOpt::Level) { - return true; - } - - /// addPassesToEmitFileFinish - If the passes to emit the specified file had - /// to be split up (e.g., to add an object writer pass), this method can be - /// used to finish up adding passes to emit the file, if necessary. - /// - virtual bool addPassesToEmitFileFinish(PassManagerBase &, - JITCodeEmitter *, - CodeGenOpt::Level) { - return true; - } - - /// addPassesToEmitFileFinish - If the passes to emit the specified file had - /// to be split up (e.g., to add an object writer pass), this method can be - /// used to finish up adding passes to emit the file, if necessary. - /// - virtual bool addPassesToEmitFileFinish(PassManagerBase &, - ObjectCodeEmitter *, - CodeGenOpt::Level) { - return true; - } - - /// addPassesToEmitMachineCode - Add passes to the specified pass manager to - /// get machine code emitted. This uses a MachineCodeEmitter 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 &, - MachineCodeEmitter &, - CodeGenOpt::Level) { + /// 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 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 returns true if machine code emission is /// not supported. /// virtual bool addPassesToEmitMachineCode(PassManagerBase &, JITCodeEmitter &, - CodeGenOpt::Level) { + bool /*DisableVerify*/ = true) { return true; } - /// addPassesToEmitWholeFile - This method can be implemented by targets that - /// require having the entire module at once. This is not recommended, do not - /// use this. - virtual bool WantsWholeFile() const { return false; } - virtual bool addPassesToEmitWholeFile(PassManager &, formatted_raw_ostream &, - CodeGenFileType, - CodeGenOpt::Level) { + /// 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; } }; @@ -304,165 +295,59 @@ public: /// class LLVMTargetMachine : public TargetMachine { protected: // Can only create subclasses. - LLVMTargetMachine(const Target &T, const std::string &TargetTriple); - - /// addCommonCodeGenPasses - Add standard LLVM codegen passes used for - /// both emitting to assembly files or machine code output. - /// - bool addCommonCodeGenPasses(PassManagerBase &, CodeGenOpt::Level); - -private: - // These routines are used by addPassesToEmitFileFinish and - // addPassesToEmitMachineCode to set the CodeModel if it's still marked - // as default. - virtual void setCodeModelForJIT(); - virtual void setCodeModelForStatic(); - + LLVMTargetMachine(const Target &T, StringRef 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. + /// + /// 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. If OptLevel is None, the code generator should emit code as fast - /// as possible, though the generated code may be less efficient. This method - /// should return FileModel::Error if emission of this file type is not - /// supported. - /// - /// The default implementation of this method adds components from the - /// LLVM retargetable code generator, invoking the methods below to get - /// target-specific passes in standard locations. - /// - virtual FileModel::Model addPassesToEmitFile(PassManagerBase &PM, - formatted_raw_ostream &Out, - CodeGenFileType FileType, - CodeGenOpt::Level); - - /// addPassesToEmitFileFinish - If the passes to emit the specified file had - /// to be split up (e.g., to add an object writer pass), this method can be - /// used to finish up adding passes to emit the file, if necessary. - /// - virtual bool addPassesToEmitFileFinish(PassManagerBase &PM, - MachineCodeEmitter *MCE, - CodeGenOpt::Level); - - /// addPassesToEmitFileFinish - If the passes to emit the specified file had - /// to be split up (e.g., to add an object writer pass), this method can be - /// used to finish up adding passes to emit the file, if necessary. - /// - virtual bool addPassesToEmitFileFinish(PassManagerBase &PM, - JITCodeEmitter *JCE, - CodeGenOpt::Level); - - /// addPassesToEmitFileFinish - If the passes to emit the specified file had - /// to be split up (e.g., to add an object writer pass), this method can be - /// used to finish up adding passes to emit the file, if necessary. - /// - virtual bool addPassesToEmitFileFinish(PassManagerBase &PM, - ObjectCodeEmitter *OCE, - CodeGenOpt::Level); - - /// addPassesToEmitMachineCode - Add passes to the specified pass manager to - /// get machine code emitted. This uses a MachineCodeEmitter 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, - MachineCodeEmitter &MCE, - CodeGenOpt::Level); - + /// 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 returns true if machine code emission is /// not supported. /// virtual bool addPassesToEmitMachineCode(PassManagerBase &PM, JITCodeEmitter &MCE, - CodeGenOpt::Level); - - /// Target-Independent Code Generator Pass Configuration Options. - - /// addInstSelector - This method should add any "last minute" LLVM->LLVM - /// passes, then install an instruction selector pass, which converts from - /// LLVM code to machine instructions. - virtual bool addInstSelector(PassManagerBase &, CodeGenOpt::Level) { - return true; - } + bool DisableVerify = true); - /// addPreRegAlloc - This method may be implemented by targets that want to - /// run passes immediately before register allocation. This should return - /// true if -print-machineinstrs should print after these passes. - virtual bool addPreRegAlloc(PassManagerBase &, CodeGenOpt::Level) { - return false; - } - - /// addPostRegAlloc - This method may be implemented by targets that want - /// to run passes after register allocation but before prolog-epilog - /// insertion. This should return true if -print-machineinstrs should print - /// after these passes. - virtual bool addPostRegAlloc(PassManagerBase &, CodeGenOpt::Level) { - return false; - } - - /// addPreSched2 - This method may be implemented by targets that want to - /// run passes after prolog-epilog insertion and before the second instruction - /// scheduling pass. This should return true if -print-machineinstrs should - /// print after these passes. - virtual bool addPreSched2(PassManagerBase &, CodeGenOpt::Level) { - return false; - } - - /// addPreEmitPass - This pass may be implemented by targets that want to run - /// passes immediately before machine code is emitted. This should return - /// true if -print-machineinstrs should print out the code after the passes. - virtual bool addPreEmitPass(PassManagerBase &, CodeGenOpt::Level) { - return false; - } - - - /// 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 &, CodeGenOpt::Level, - MachineCodeEmitter &) { - 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 &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 &, CodeGenOpt::Level, + virtual bool addCodeEmitter(PassManagerBase &, JITCodeEmitter &) { return true; } - - /// addSimpleCodeEmitter - This pass should be overridden by the target to add - /// a code emitter (without setting flags), if supported. If this is not - /// supported, 'true' should be returned. - virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - MachineCodeEmitter &) { - return true; - } - - /// addSimpleCodeEmitter - This pass should be overridden by the target to add - /// a code emitter (without setting flags), if supported. If this is not - /// supported, 'true' should be returned. - virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - JITCodeEmitter &) { - return true; - } - - /// addSimpleCodeEmitter - This pass should be overridden by the target to add - /// a code emitter (without setting flags), if supported. If this is not - /// supported, 'true' should be returned. - virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - ObjectCodeEmitter &) { - return true; - } - - /// getEnableTailMergeDefault - the default setting for -enable-tail-merge - /// on this target. User flag overrides. - virtual bool getEnableTailMergeDefault() const { return true; } }; } // End llvm namespace