X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FTarget%2FTargetMachine.h;h=ebe6bea7021822f93e41ca9766eef12d9d7eac40;hb=104cf9e02b0ed94d4173869a598af6c6972a8660;hp=ba688b48dec408687764db268de72771e8406f60;hpb=2e9d5f912a9841d3685ba0241abe1131943fed29;p=oota-llvm.git diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index ba688b48dec..ebe6bea7021 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -19,6 +19,7 @@ namespace llvm { +class Target; class TargetAsmInfo; class TargetData; class TargetSubtarget; @@ -28,14 +29,15 @@ class TargetJITInfo; class TargetLowering; class TargetFrameInfo; class MachineCodeEmitter; +class JITCodeEmitter; +class ObjectCodeEmitter; class TargetRegisterInfo; -class Module; class PassManagerBase; class PassManager; class Pass; class TargetMachOWriterInfo; class TargetELFWriterInfo; -class raw_ostream; +class formatted_raw_ostream; // Relocation model types. namespace Reloc { @@ -68,6 +70,25 @@ namespace FileModel { }; } +// 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 @@ -78,11 +99,14 @@ class TargetMachine { TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT void operator=(const TargetMachine &); // DO NOT IMPLEMENT protected: // Can only create subclasses. - TargetMachine() : AsmInfo(0) { } + 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; } + + /// TheTarget - The Target that this machine was created for. + const Target &TheTarget; /// AsmInfo - Contains target specific asm information. /// @@ -95,18 +119,7 @@ protected: // Can only create subclasses. 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 &) { return 0; } - - /// 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 Target &getTarget() const { return TheTarget; } // Interfaces to the major aspects of target machine information: // -- Instruction opcode and operand information @@ -211,9 +224,9 @@ public: /// is not supported. /// virtual FileModel::Model addPassesToEmitFile(PassManagerBase &, - raw_ostream &, + formatted_raw_ostream &, CodeGenFileType, - unsigned /* OptLevel */) { + CodeGenOpt::Level) { return FileModel::None; } @@ -223,7 +236,27 @@ public: /// virtual bool addPassesToEmitFileFinish(PassManagerBase &, MachineCodeEmitter *, - unsigned /* OptLevel */) { + 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; } @@ -235,7 +268,19 @@ public: /// virtual bool addPassesToEmitMachineCode(PassManagerBase &, MachineCodeEmitter &, - unsigned /* OptLevel */) { + 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; } @@ -243,9 +288,9 @@ public: /// 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 &, raw_ostream &, + virtual bool addPassesToEmitWholeFile(PassManager &, formatted_raw_ostream &, CodeGenFileType, - unsigned /* OptLevel */) { + CodeGenOpt::Level) { return true; } }; @@ -255,18 +300,18 @@ public: /// class LLVMTargetMachine : public TargetMachine { protected: // Can only create subclasses. - LLVMTargetMachine() { } + LLVMTargetMachine(const Target &T) : TargetMachine(T) { } /// addCommonCodeGenPasses - Add standard LLVM codegen passes used for /// both emitting to assembly files or machine code output. /// - bool addCommonCodeGenPasses(PassManagerBase &, unsigned /* OptLevel */); + 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 OptLevel is 0, the code generator should emit code as fast + /// 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. @@ -276,9 +321,9 @@ public: /// target-specific passes in standard locations. /// virtual FileModel::Model addPassesToEmitFile(PassManagerBase &PM, - raw_ostream &Out, + formatted_raw_ostream &Out, CodeGenFileType FileType, - unsigned OptLevel); + 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 @@ -286,7 +331,23 @@ public: /// virtual bool addPassesToEmitFileFinish(PassManagerBase &PM, MachineCodeEmitter *MCE, - unsigned OptLevel); + 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 @@ -296,21 +357,31 @@ public: /// virtual bool addPassesToEmitMachineCode(PassManagerBase &PM, MachineCodeEmitter &MCE, - unsigned OptLevel); + 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, + 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 &, unsigned /* OptLevel */) { + 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 &, unsigned /* OptLevel */) { + virtual bool addPreRegAlloc(PassManagerBase &, CodeGenOpt::Level) { return false; } @@ -318,46 +389,69 @@ public: /// 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 &, unsigned /* OptLevel */) { + 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(PassManagerBase &, unsigned /* OptLevel */) { + virtual bool addPreEmitPass(PassManagerBase &, CodeGenOpt::Level) { 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 &, unsigned /* OptLevel */, - bool /* VerboseAsmDefault */, raw_ostream &) { + /// 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; } - + /// 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 &, unsigned /* OptLevel */, - bool /*DumpAsm*/, MachineCodeEmitter &) { + /// returned. + virtual bool addCodeEmitter(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, + 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 &, unsigned /* OptLevel */, - bool /*DumpAsm*/, MachineCodeEmitter &) { + /// 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; } + + /// addAssemblyEmitter - Helper function which creates a target specific + /// assembly printer, if available. + /// + /// \return Returns 'false' on success. + bool addAssemblyEmitter(PassManagerBase &, CodeGenOpt::Level, + bool /* VerboseAsmDefault */, + formatted_raw_ostream &); }; } // End llvm namespace