X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetMachine.h;h=50066473b552df1731a1f8d9cb14d8a589d502a0;hb=84fca61ca5fba5c33a799d9133750b6832ddef7e;hp=7c86a8d7dbe4476e968cf80d2dee0b0c686cb9ff;hpb=769b481e9f57b9fa2acf6c5fe0a94877520fcec3;p=oota-llvm.git diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 7c86a8d7dbe..50066473b55 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -14,58 +14,37 @@ #ifndef LLVM_TARGET_TARGETMACHINE_H #define LLVM_TARGET_TARGETMACHINE_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 #include namespace llvm { -class TargetAsmInfo; -class TargetData; -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 TargetIntrinsicInfo; class TargetJITInfo; class TargetLowering; -class TargetFrameInfo; -class MachineCodeEmitter; +class TargetPassConfig; class TargetRegisterInfo; -class Module; -class PassManagerBase; -class PassManager; -class Pass; -class TargetMachOWriterInfo; -class TargetELFWriterInfo; - -// 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 - }; -} +class TargetSelectionDAGInfo; +class TargetSubtargetInfo; +class formatted_raw_ostream; +class raw_ostream; //===----------------------------------------------------------------------===// /// @@ -74,38 +53,49 @@ namespace FileModel { /// 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() : AsmInfo(NULL) { } + 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. /// - mutable const TargetAsmInfo *AsmInfo; - - /// createTargetAsmInfo - Create a new instance of target specific asm - /// information. - virtual const TargetAsmInfo *createTargetAsmInfo() const { return NULL; } + 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; } + + TargetOptions Options; // Interfaces to the major aspects of target machine information: // -- Instruction opcode and operand information @@ -113,27 +103,25 @@ public: // -- 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; } - - - /// getTargetAsmInfo - Return target specific asm 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; } + virtual const ScalarTargetTransformInfo* + getScalarTargetTransformInfo() const { return 0; } + virtual const VectorTargetTransformInfo* + getVectorTargetTransformInfo() const { return 0; } + + /// getMCAsmInfo - Return target specific asm information. /// - const TargetAsmInfo *getTargetAsmInfo() const { - if (!AsmInfo) AsmInfo = createTargetAsmInfo(); - return AsmInfo; - } - + 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 { - const TargetSubtarget *TST = getSubtargetImpl(); - assert(TST && dynamic_cast(TST) && - "Not the right kind of subtarget!"); - return *static_cast(TST); + return *static_cast(getSubtargetImpl()); } /// getRegisterInfo - If register information is available, return it. If @@ -142,92 +130,151 @@ public: /// 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; } - /// 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; } - /// getELFWriterInfo - If this target supports an ELF writer, return - /// information for it, otherwise return null. - /// - virtual const TargetELFWriterInfo *getELFWriterInfo() const { return 0; } + /// 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(); - - /// 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; + + /// getTLSModel - Returns the TLS model which should be used for the given + /// global variable. + TLSModel::Model getTLSModel(const GlobalValue *GV) const; - /// setCodeModel - Sets the code model. - static void setCodeModel(CodeModel::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. }; - /// 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. If Fast is set to true, 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. - /// - virtual FileModel::Model addPassesToEmitFile(PassManagerBase &PM, - std::ostream &Out, - CodeGenFileType FileType, - bool Fast) { - 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 &PM, - MachineCodeEmitter *MCE, bool Fast) { + /// 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 &PM, - MachineCodeEmitter &MCE, bool Fast) { + virtual bool addPassesToEmitMachineCode(PassManagerBase &, + JITCodeEmitter &, + 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 &PM, std::ostream &Out, - CodeGenFileType FileType, bool Fast) { + /// 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; } }; @@ -237,101 +284,53 @@ public: /// class LLVMTargetMachine : public TargetMachine { protected: // Can only create subclasses. - LLVMTargetMachine() { } + 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. If Fast is set to true, 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, - std::ostream &Out, - CodeGenFileType FileType, - bool Fast); - - /// 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, bool Fast); - + /// 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, - MachineCodeEmitter &MCE, bool Fast); - - /// 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 &PM, bool Fast) { - return true; - } + JITCodeEmitter &MCE, + bool DisableVerify = true); - /// addPreRegAllocPasses - 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 &PM, bool Fast) { - return false; - } + /// 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); - /// addPostRegAllocPasses - 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 &PM, bool Fast) { - 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 &PM, bool Fast) { - return false; - } - - - /// addAssemblyEmitter - This pass should be overridden by the target to add - /// the asmprinter, if asm emission is supported. If this is not supported, - /// 'true' should be returned. - virtual bool addAssemblyEmitter(PassManagerBase &PM, bool Fast, - std::ostream &Out) { - return 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. If DumpAsm is true, the generated assembly is printed to cerr. - virtual bool addCodeEmitter(PassManagerBase &PM, bool Fast, bool DumpAsm, - MachineCodeEmitter &MCE) { + /// returned. + 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. If DumpAsm is true, the generated - /// assembly is printed to cerr. - virtual bool addSimpleCodeEmitter(PassManagerBase &PM, bool Fast, - bool DumpAsm, MachineCodeEmitter &MCE) { - 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