X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetMachine.h;h=ce293d5114d64bf4a7eb047aabfc55eb2030532c;hb=4d1be777f81137bab98025d1c37c08ef0ec2f204;hp=13b0d37d5b4a7052b6992ba7659950c3253326da;hpb=e911615c4769d793588087b5321d303ecb9661c7;p=oota-llvm.git diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 13b0d37d5b4..ce293d5114d 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -2,8 +2,8 @@ // // 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. // //===----------------------------------------------------------------------===// // @@ -16,7 +16,6 @@ #include "llvm/Target/TargetInstrItineraries.h" #include -#include namespace llvm { @@ -24,16 +23,21 @@ class TargetAsmInfo; class TargetData; class TargetSubtarget; class TargetInstrInfo; -class TargetInstrDescriptor; +class TargetIntrinsicInfo; class TargetJITInfo; class TargetLowering; class TargetFrameInfo; class MachineCodeEmitter; -class MRegisterInfo; +class JITCodeEmitter; +class ObjectCodeEmitter; +class TargetRegisterInfo; class Module; -class FunctionPassManager; +class PassManagerBase; class PassManager; class Pass; +class TargetMachOWriterInfo; +class TargetELFWriterInfo; +class formatted_raw_ostream; // Relocation model types. namespace Reloc { @@ -56,6 +60,35 @@ namespace CodeModel { }; } +namespace FileModel { + enum Model { + Error, + None, + AsmFile, + MachOFile, + ElfFile + }; +} + +// Code generation optimization level. +namespace CodeGenOpt { + enum Level { + Default, + None, + Aggressive + }; +} + + +// Possible float ABI settings. Used with FloatABIType in TargetOptions.h. +namespace FloatABI { + enum ABIType { + Default, // Target-specific (either soft of hard depending on triple, etc). + Soft, // Soft float. + Hard // Hard float. + }; +} + //===----------------------------------------------------------------------===// /// /// TargetMachine - Primary interface to the complete machine description for @@ -66,7 +99,7 @@ class TargetMachine { TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT void operator=(const TargetMachine &); // DO NOT IMPLEMENT protected: // Can only create subclasses. - TargetMachine() : AsmInfo(NULL) { } + TargetMachine(); /// getSubtargetImpl - virtual method implemented by subclasses that returns /// a reference to that target's TargetSubtarget-derived member variable. @@ -78,7 +111,7 @@ protected: // Can only create subclasses. /// createTargetAsmInfo - Create a new instance of target specific asm /// information. - virtual const TargetAsmInfo *createTargetAsmInfo() const { return NULL; } + virtual const TargetAsmInfo *createTargetAsmInfo() const { return 0; } public: virtual ~TargetMachine(); @@ -88,7 +121,7 @@ public: /// 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; } + static unsigned getModuleMatchQuality(const Module &) { return 0; } /// getJITMatchQuality - This static method should be implemented by targets /// that provide JIT capabilities to indicate how suitable they are for @@ -107,7 +140,6 @@ public: virtual TargetLowering *getTargetLowering() const { return 0; } virtual const TargetData *getTargetData() const { return 0; } - /// getTargetAsmInfo - Return target specific asm information. /// const TargetAsmInfo *getTargetAsmInfo() const { @@ -129,7 +161,12 @@ public: /// 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. @@ -143,11 +180,22 @@ public: return InstrItineraryData(); } + /// getMachOWriterInfo - If this target supports a Mach-O writer, return + /// information for it, otherwise return null. + /// + virtual const TargetMachOWriterInfo *getMachOWriterInfo() const { return 0; } + + /// getELFWriterInfo - If this target supports an ELF writer, return + /// information for it, otherwise return null. + /// + virtual const TargetELFWriterInfo *getELFWriterInfo() const { return 0; } + /// 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); /// getCodeModel - Returns the code model. The choices are small, kernel, @@ -155,22 +203,68 @@ public: static CodeModel::Model getCodeModel(); /// setCodeModel - Sets the code model. + /// static void setCodeModel(CodeModel::Model Model); + /// 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); + /// CodeGenFileType - These enums are meant to be passed into /// addPassesToEmitFile to indicate what type of file to emit. enum CodeGenFileType { AssemblyFile, ObjectFile, DynamicLibrary }; - /// 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. + /// 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 &, + 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 addPassesToEmitFile(FunctionPassManager &PM, std::ostream &Out, - CodeGenFileType FileType, bool Fast) { + 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; } @@ -180,18 +274,31 @@ public: /// of functions. This method returns true if machine code emission is /// not supported. /// - virtual bool addPassesToEmitMachineCode(FunctionPassManager &PM, - MachineCodeEmitter &MCE, bool Fast) { + virtual bool addPassesToEmitMachineCode(PassManagerBase &, + MachineCodeEmitter &, + 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 &, + JITCodeEmitter &, + CodeGenOpt::Level) { 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) { + virtual bool addPassesToEmitWholeFile(PassManager &, formatted_raw_ostream &, + CodeGenFileType, + CodeGenOpt::Level) { return true; } }; @@ -201,21 +308,64 @@ public: /// class LLVMTargetMachine : public TargetMachine { protected: // Can only create subclasses. - LLVMTargetMachine() { } + LLVMTargetMachine() { } + + /// addCommonCodeGenPasses - Add standard LLVM codegen passes used for + /// both emitting to assembly files or machine code output. + /// + bool addCommonCodeGenPasses(PassManagerBase &, CodeGenOpt::Level); + public: - /// 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. 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 bool addPassesToEmitFile(FunctionPassManager &PM, std::ostream &Out, - CodeGenFileType FileType, bool Fast); + 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); /// addPassesToEmitMachineCode - Add passes to the specified pass manager to /// get machine code emitted. This uses a MachineCodeEmitter object to handle @@ -223,30 +373,38 @@ public: /// of functions. This method returns true if machine code emission is /// not supported. /// - virtual bool addPassesToEmitMachineCode(FunctionPassManager &PM, - MachineCodeEmitter &MCE, bool Fast); + 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(FunctionPassManager &PM, bool Fast) { + virtual bool addInstSelector(PassManagerBase &, CodeGenOpt::Level) { return 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 &, CodeGenOpt::Level) { + return false; + } + /// 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(FunctionPassManager &PM, bool Fast) { + virtual bool addPostRegAlloc(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(FunctionPassManager &PM, bool Fast) { + virtual bool addPreEmitPass(PassManagerBase &, CodeGenOpt::Level) { return false; } @@ -254,26 +412,58 @@ public: /// 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(FunctionPassManager &PM, bool Fast, - std::ostream &Out) { + virtual bool addAssemblyEmitter(PassManagerBase &, CodeGenOpt::Level, + bool /* VerboseAsmDefault */, + formatted_raw_ostream &) { return true; } - /// addObjectWriter - This pass should be overridden by the target to add - /// the object-file writer, if supported. If this is not supported, - /// 'true' should be returned. - virtual bool addObjectWriter(FunctionPassManager &PM, bool Fast, - std::ostream &Out) { + /// 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 &, CodeGenOpt::Level, + bool /*DumpAsm*/, MachineCodeEmitter &) { 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. - virtual bool addCodeEmitter(FunctionPassManager &PM, bool Fast, - MachineCodeEmitter &MCE) { + /// returned. If DumpAsm is true, the generated assembly is printed to cerr. + virtual bool addCodeEmitter(PassManagerBase &, CodeGenOpt::Level, + bool /*DumpAsm*/, 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 &, CodeGenOpt::Level, + bool /*DumpAsm*/, 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. If DumpAsm is true, the generated + /// assembly is printed to cerr. + virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level, + bool /*DumpAsm*/, 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 &, CodeGenOpt::Level, + bool /*DumpAsm*/, 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