diff options
Diffstat (limited to 'include/llvm/Target/TargetMachine.h')
| -rw-r--r-- | include/llvm/Target/TargetMachine.h | 139 |
1 files changed, 74 insertions, 65 deletions
diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 33fc451..92b648c 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -16,10 +16,12 @@ #include "llvm/Target/TargetInstrItineraries.h" #include <cassert> +#include <string> namespace llvm { -class TargetAsmInfo; +class Target; +class MCAsmInfo; class TargetData; class TargetSubtarget; class TargetInstrInfo; @@ -29,14 +31,14 @@ 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 { @@ -79,15 +81,6 @@ namespace CodeGenOpt { } -// 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 @@ -98,35 +91,23 @@ class TargetMachine { TargetMachine(const TargetMachine &); // DO NOT IMPLEMENT void operator=(const TargetMachine &); // DO NOT IMPLEMENT protected: // Can only create subclasses. - TargetMachine(); + 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. /// - mutable const TargetAsmInfo *AsmInfo; + const MCAsmInfo *AsmInfo; - /// createTargetAsmInfo - Create a new instance of target specific asm - /// information. - virtual const TargetAsmInfo *createTargetAsmInfo() const { return 0; } - 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 @@ -139,12 +120,9 @@ public: virtual TargetLowering *getTargetLowering() const { return 0; } virtual const TargetData *getTargetData() const { return 0; } - /// getTargetAsmInfo - Return target specific asm information. + /// 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 @@ -225,13 +203,12 @@ 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, though the generated code may be less efficient. + /// generation. /// This method should return FileModel::Error if emission of this file type /// is not supported. /// virtual FileModel::Model addPassesToEmitFile(PassManagerBase &, - raw_ostream &, + formatted_raw_ostream &, CodeGenFileType, CodeGenOpt::Level) { return FileModel::None; @@ -257,6 +234,16 @@ public: 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 @@ -285,7 +272,7 @@ 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, CodeGenOpt::Level) { return true; @@ -297,8 +284,8 @@ public: /// class LLVMTargetMachine : public TargetMachine { protected: // Can only create subclasses. - LLVMTargetMachine() { } - + 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. /// @@ -318,7 +305,7 @@ public: /// target-specific passes in standard locations. /// virtual FileModel::Model addPassesToEmitFile(PassManagerBase &PM, - raw_ostream &Out, + formatted_raw_ostream &Out, CodeGenFileType FileType, CodeGenOpt::Level); @@ -335,7 +322,15 @@ public: /// used to finish up adding passes to emit the file, if necessary. /// virtual bool addPassesToEmitFileFinish(PassManagerBase &PM, - JITCodeEmitter *MCE, + 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 @@ -367,20 +362,28 @@ public: return true; } - /// addPreRegAllocPasses - This method may be implemented by targets that want - /// to run passes immediately before register allocation. This should return + /// 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; } - /// addPostRegAllocPasses - This method may be implemented by targets that - /// want to run passes after register allocation but before prolog-epilog + /// 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 @@ -390,51 +393,57 @@ 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(PassManagerBase &, CodeGenOpt::Level, - bool /* VerboseAsmDefault */, raw_ostream &) { - 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. + /// returned. virtual bool addCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - bool /*DumpAsm*/, MachineCodeEmitter &) { + 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. + /// returned. virtual bool addCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - bool /*DumpAsm*/, JITCodeEmitter &) { + 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. + /// supported, 'true' should be returned. virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - bool /*DumpAsm*/, MachineCodeEmitter &) { + 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. + /// supported, 'true' should be returned. virtual bool addSimpleCodeEmitter(PassManagerBase &, CodeGenOpt::Level, - bool /*DumpAsm*/, JITCodeEmitter &) { + 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 |
