X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FAsmPrinter.h;h=ffeb44da7bc8a395accb323a36905080d5781a2b;hb=737c9f6005594898eed4746cd310cd161ef209c6;hp=c12113ec7a3e522f6a788b6b69fdb835ee359543;hpb=c99fd879c0f4bbc56c29d508fec7935e6cbd7ed0;p=oota-llvm.git diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h index c12113ec7a3..8a46d331711 100644 --- a/include/llvm/CodeGen/AsmPrinter.h +++ b/include/llvm/CodeGen/AsmPrinter.h @@ -17,118 +17,75 @@ #define LLVM_CODEGEN_ASMPRINTER_H #include "llvm/CodeGen/MachineFunctionPass.h" -#include "llvm/Support/DebugLoc.h" -#include "llvm/Target/TargetMachine.h" -#include "llvm/ADT/DenseMap.h" +#include "llvm/IR/InlineAsm.h" +#include "llvm/Support/DataTypes.h" +#include "llvm/Support/ErrorHandling.h" namespace llvm { + class AsmPrinterHandler; class BlockAddress; class GCStrategy; class Constant; class ConstantArray; - class ConstantFP; - class ConstantInt; - class ConstantStruct; - class ConstantVector; class GCMetadataPrinter; class GlobalValue; class GlobalVariable; class MachineBasicBlock; class MachineFunction; class MachineInstr; + class MachineLocation; class MachineLoopInfo; class MachineLoop; - class MachineConstantPool; - class MachineConstantPoolEntry; class MachineConstantPoolValue; class MachineJumpTableInfo; class MachineModuleInfo; - class MCInst; + class MCAsmInfo; + class MCCFIInstruction; class MCContext; + class MCInst; + class MCInstrInfo; class MCSection; class MCStreamer; + class MCSubtargetInfo; class MCSymbol; class MDNode; - class DwarfWriter; + class DwarfDebug; + class DwarfException; class Mangler; - class MCAsmInfo; class TargetLoweringObjectFile; - class Twine; - class Type; - class formatted_raw_ostream; + class DataLayout; + class TargetMachine; /// AsmPrinter - This class is intended to be used as a driving class for all /// asm writers. class AsmPrinter : public MachineFunctionPass { - static char ID; - - /// FunctionNumber - This provides a unique ID for each function emitted in - /// this translation unit. It is autoincremented by SetupMachineFunction, - /// and can be accessed with getFunctionNumber() and - /// IncrementFunctionNumber(). - /// - unsigned FunctionNumber; - - // GCMetadataPrinters - The garbage collection metadata printer table. - typedef DenseMap gcp_map_type; - typedef gcp_map_type::iterator gcp_iterator; - gcp_map_type GCMetadataPrinters; - - /// If VerboseAsm is set, a pointer to the loop info for this - /// function. - /// - MachineLoopInfo *LI; - public: - /// MMI - If available, this is a pointer to the current MachineModuleInfo. - MachineModuleInfo *MMI; - - protected: - /// DW - If available, this is a pointer to the current dwarf writer. - DwarfWriter *DW; - - public: - /// Flags to specify different kinds of comments to output in - /// assembly code. These flags carry semantic information not - /// otherwise easily derivable from the IR text. - /// - enum CommentFlag { - ReloadReuse = 0x1 - }; - - /// Output stream on which we're printing assembly code. - /// - formatted_raw_ostream &O; - /// Target machine description. /// TargetMachine &TM; - - /// getObjFileLowering - Return information about object file lowering. - TargetLoweringObjectFile &getObjFileLowering() const; - + /// Target Asm Printer information. /// const MCAsmInfo *MAI; - /// Target Register Information. - /// - const TargetRegisterInfo *TRI; - + const MCInstrInfo *MII; /// OutContext - This is the context for the output file that we are /// streaming. This owns all of the global MC-related objects for the /// generated translation unit. MCContext &OutContext; - + /// OutStreamer - This is the MCStreamer object for the file we are /// generating. This contains the transient state for the current /// translation unit that we are generating (such as the current section /// etc). MCStreamer &OutStreamer; - + /// The current machine function. const MachineFunction *MF; + /// MMI - This is a pointer to the current MachineModuleInfo. + MachineModuleInfo *MMI; + /// Name-mangler for global names. /// Mangler *Mang; @@ -137,147 +94,261 @@ namespace llvm { /// beginning of each call to runOnMachineFunction(). /// MCSymbol *CurrentFnSym; - - /// getCurrentSection() - Return the current section we are emitting to. - const MCSection *getCurrentSection() const; - + + /// The symbol used to represent the start of the current function for the + /// purpose of calculating its size (e.g. using the .size directive). By + /// default, this is equal to CurrentFnSym. + MCSymbol *CurrentFnSymForSize; + + private: + // GCMetadataPrinters - The garbage collection metadata printer table. + void *GCMetadataPrinters; // Really a DenseMap. /// VerboseAsm - Emit comments in assembly output if this is true. /// bool VerboseAsm; + static char ID; - /// Private state for PrintSpecial() - // Assign a unique ID to this machine instruction. - mutable const MachineInstr *LastMI; - mutable const Function *LastFn; - mutable unsigned Counter; - - // Private state for processDebugLoc() - mutable const MDNode *PrevDLT; + /// If VerboseAsm is set, a pointer to the loop info for this + /// function. + MachineLoopInfo *LI; + + struct HandlerInfo { + AsmPrinterHandler *Handler; + const char *TimerName, *TimerGroupName; + HandlerInfo(AsmPrinterHandler *Handler, const char *TimerName, + const char *TimerGroupName) + : Handler(Handler), TimerName(TimerName), + TimerGroupName(TimerGroupName) {} + }; + /// Handlers - a vector of all debug/EH info emitters we should use. + /// This vector maintains ownership of the emitters. + SmallVector Handlers; + + /// DD - If the target supports dwarf debug info, this pointer is non-null. + DwarfDebug *DD; protected: - explicit AsmPrinter(formatted_raw_ostream &o, TargetMachine &TM, - const MCAsmInfo *T, bool V); - + explicit AsmPrinter(TargetMachine &TM, MCStreamer &Streamer); + public: virtual ~AsmPrinter(); + const DwarfDebug *getDwarfDebug() const { return DD; } + /// isVerbose - Return true if assembly output should contain comments. /// bool isVerbose() const { return VerboseAsm; } /// getFunctionNumber - Return a unique ID for the current function. /// - unsigned getFunctionNumber() const { return FunctionNumber; } - - protected: + unsigned getFunctionNumber() const; + + /// getObjFileLowering - Return information about object file lowering. + const TargetLoweringObjectFile &getObjFileLowering() const; + + /// getDataLayout - Return information about data layout. + const DataLayout &getDataLayout() const; + + /// getSubtargetInfo - Return information about subtarget. + const MCSubtargetInfo &getSubtargetInfo() const; + + void EmitToStreamer(MCStreamer &S, const MCInst &Inst); + + /// getTargetTriple - Return the target triple string. + StringRef getTargetTriple() const; + + /// getCurrentSection() - Return the current section we are emitting to. + const MCSection *getCurrentSection() const; + + void getNameWithPrefix(SmallVectorImpl &Name, + const GlobalValue *GV) const; + + MCSymbol *getSymbol(const GlobalValue *GV) const; + + //===------------------------------------------------------------------===// + // MachineFunctionPass Implementation. + //===------------------------------------------------------------------===// + /// getAnalysisUsage - Record analysis usage. - /// + /// void getAnalysisUsage(AnalysisUsage &AU) const; - + /// doInitialization - Set up the AsmPrinter when we are working on a new /// module. If your pass overrides this, it must make sure to explicitly /// call this implementation. bool doInitialization(Module &M); - /// EmitStartOfAsmFile - This virtual method can be overridden by targets - /// that want to emit something at the start of their file. - virtual void EmitStartOfAsmFile(Module &) {} - - /// EmitEndOfAsmFile - This virtual method can be overridden by targets that - /// want to emit something at the end of their file. - virtual void EmitEndOfAsmFile(Module &) {} - /// doFinalization - Shut down the asmprinter. If you override this in your /// pass, you must make sure to call it explicitly. bool doFinalization(Module &M); - - /// PrintSpecial - Print information related to the specified machine instr - /// that is independent of the operand, and may be independent of the instr - /// itself. This can be useful for portably encoding the comment character - /// or other bits of target-specific knowledge into the asmstrings. The - /// syntax used is ${:comment}. Targets can override this to add support - /// for their own strange codes. - virtual void PrintSpecial(const MachineInstr *MI, const char *Code) const; - /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM - /// instruction, using the specified assembler variant. Targets should - /// override this to format as appropriate. This method can return true if - /// the operand is erroneous. - virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, const char *ExtraCode); - - /// PrintAsmMemoryOperand - Print the specified operand of MI, an INLINEASM - /// instruction, using the specified assembler variant as an address. - /// Targets should override this to format as appropriate. This method can - /// return true if the operand is erroneous. - virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, - const char *ExtraCode); - + /// runOnMachineFunction - Emit the specified function out to the + /// OutStreamer. + virtual bool runOnMachineFunction(MachineFunction &MF) { + SetupMachineFunction(MF); + EmitFunctionHeader(); + EmitFunctionBody(); + return false; + } + + //===------------------------------------------------------------------===// + // Coarse grained IR lowering routines. + //===------------------------------------------------------------------===// + /// SetupMachineFunction - This should be called when a new MachineFunction /// is being processed from runOnMachineFunction. void SetupMachineFunction(MachineFunction &MF); - - /// IncrementFunctionNumber - Increase Function Number. AsmPrinters should - /// not normally call this, as the counter is automatically bumped by - /// SetupMachineFunction. - void IncrementFunctionNumber() { FunctionNumber++; } - + + /// EmitFunctionHeader - This method emits the header for the current + /// function. + void EmitFunctionHeader(); + + /// EmitFunctionBody - This method emits the body and trailer for a + /// function. + void EmitFunctionBody(); + + void emitPrologLabel(const MachineInstr &MI); + + enum CFIMoveType { + CFI_M_None, + CFI_M_EH, + CFI_M_Debug + }; + CFIMoveType needsCFIMoves(); + + bool needsSEHMoves(); + /// EmitConstantPool - Print to the current output stream assembly /// representations of the constants in the constant pool MCP. This is /// used to print out constants which have been "spilled to memory" by /// the code generator. /// - void EmitConstantPool(MachineConstantPool *MCP); + virtual void EmitConstantPool(); - /// EmitJumpTableInfo - Print assembly representations of the jump tables - /// used by the current function to the current output stream. + /// EmitJumpTableInfo - Print assembly representations of the jump tables + /// used by the current function to the current output stream. /// - void EmitJumpTableInfo(MachineJumpTableInfo *MJTI, MachineFunction &MF); - + void EmitJumpTableInfo(); + /// EmitGlobalVariable - Emit the specified global variable to the .s file. virtual void EmitGlobalVariable(const GlobalVariable *GV); - + /// EmitSpecialLLVMGlobal - Check to see if the specified global is a /// special global used by LLVM. If so, emit it and return true, otherwise /// do nothing and return false. bool EmitSpecialLLVMGlobal(const GlobalVariable *GV); - public: + /// EmitAlignment - Emit an alignment directive to the specified power of + /// two boundary. For example, if you pass in 3 here, you will get an 8 + /// byte alignment. If a global value is specified, and if that global has + /// an explicit alignment requested, it will override the alignment request + /// if required for correctness. + /// + void EmitAlignment(unsigned NumBits, const GlobalValue *GV = 0) const; + + /// EmitBasicBlockStart - This method prints the label for the specified + /// MachineBasicBlock, an alignment (if present) and a comment describing + /// it if appropriate. + void EmitBasicBlockStart(const MachineBasicBlock *MBB) const; + + /// \brief Print a general LLVM constant to the .s file. + void EmitGlobalConstant(const Constant *CV); + + //===------------------------------------------------------------------===// - /// LEB 128 number encoding. + // Overridable Hooks + //===------------------------------------------------------------------===// + + // Targets can, or in the case of EmitInstruction, must implement these to + // customize output. + + /// EmitStartOfAsmFile - This virtual method can be overridden by targets + /// that want to emit something at the start of their file. + virtual void EmitStartOfAsmFile(Module &) {} + + /// EmitEndOfAsmFile - This virtual method can be overridden by targets that + /// want to emit something at the end of their file. + virtual void EmitEndOfAsmFile(Module &) {} + + /// EmitFunctionBodyStart - Targets can override this to emit stuff before + /// the first basic block in the function. + virtual void EmitFunctionBodyStart() {} + + /// EmitFunctionBodyEnd - Targets can override this to emit stuff after + /// the last basic block in the function. + virtual void EmitFunctionBodyEnd() {} - /// PrintULEB128 - Print a series of hexidecimal values(separated by commas) - /// representing an unsigned leb128 value. - void PrintULEB128(unsigned Value) const; + /// EmitInstruction - Targets should implement this to emit instructions. + virtual void EmitInstruction(const MachineInstr *) { + llvm_unreachable("EmitInstruction not implemented"); + } - /// PrintSLEB128 - Print a series of hexidecimal values(separated by commas) - /// representing a signed leb128 value. - void PrintSLEB128(int Value) const; + virtual void EmitFunctionEntryLabel(); + virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV); + + /// EmitXXStructor - Targets can override this to change how global + /// constants that are part of a C++ static/global constructor list are + /// emitted. + virtual void EmitXXStructor(const Constant *CV) { + EmitGlobalConstant(CV); + } + + /// isBlockOnlyReachableByFallthough - Return true if the basic block has + /// exactly one predecessor and the control transfer mechanism between + /// the predecessor and this block is a fall-through. + virtual bool + isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const; + + /// emitImplicitDef - Targets can override this to customize the output of + /// IMPLICIT_DEF instructions in verbose mode. + virtual void emitImplicitDef(const MachineInstr *MI) const; + + //===------------------------------------------------------------------===// + // Symbol Lowering Routines. //===------------------------------------------------------------------===// - // Emission and print routines - // + public: + + /// GetTempSymbol - Return the MCSymbol corresponding to the assembler + /// temporary label with the specified stem and unique ID. + MCSymbol *GetTempSymbol(StringRef Name, unsigned ID) const; + + /// GetTempSymbol - Return an assembler temporary label with the specified + /// stem. + MCSymbol *GetTempSymbol(StringRef Name) const; + + /// Return the MCSymbol for a private symbol with global value name as its + /// base, with the specified suffix. + MCSymbol *getSymbolWithGlobalValueBase(const GlobalValue *GV, + StringRef Suffix) const; + + /// GetExternalSymbolSymbol - Return the MCSymbol for the specified + /// ExternalSymbol. + MCSymbol *GetExternalSymbolSymbol(StringRef Sym) const; + + /// GetCPISymbol - Return the symbol for the specified constant pool entry. + MCSymbol *GetCPISymbol(unsigned CPID) const; + + /// GetJTISymbol - Return the symbol for the specified jump table entry. + MCSymbol *GetJTISymbol(unsigned JTID, bool isLinkerPrivate = false) const; + + /// GetJTSetSymbol - Return the symbol for the specified jump table .set + /// FIXME: privatize to AsmPrinter. + MCSymbol *GetJTSetSymbol(unsigned UID, unsigned MBBID) const; + + /// GetBlockAddressSymbol - Return the MCSymbol used to satisfy BlockAddress + /// uses of the specified basic block. + MCSymbol *GetBlockAddressSymbol(const BlockAddress *BA) const; + MCSymbol *GetBlockAddressSymbol(const BasicBlock *BB) const; + + //===------------------------------------------------------------------===// + // Emission Helper Routines. + //===------------------------------------------------------------------===// + public: + /// printOffset - This is just convenient handler for printing offsets. + void printOffset(int64_t Offset, raw_ostream &OS) const; - /// PrintHex - Print a value as a hexidecimal value. - /// - void PrintHex(uint64_t Value) const; - - /// EOL - Print a newline character to asm stream. If a comment is present - /// then it will be printed first. Comments should not contain '\n'. - void EOL() const; - void EOL(const Twine &Comment) const; - void EOL(const Twine &Comment, unsigned Encoding) const; - - /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an - /// unsigned leb128 value. - void EmitULEB128Bytes(unsigned Value) const; - - /// EmitSLEB128Bytes - print an assembler byte data directive to compose a - /// signed leb128 value. - void EmitSLEB128Bytes(int Value) const; - /// EmitInt8 - Emit a byte directive and value. /// void EmitInt8(int Value) const; @@ -290,149 +361,159 @@ namespace llvm { /// void EmitInt32(int Value) const; - /// EmitInt64 - Emit a long long directive and value. + /// EmitLabelDifference - Emit something like ".long Hi-Lo" where the size + /// in bytes of the directive is specified by Size and Hi/Lo specify the + /// labels. This implicitly uses .set if it is available. + void EmitLabelDifference(const MCSymbol *Hi, const MCSymbol *Lo, + unsigned Size) const; + + /// EmitLabelOffsetDifference - Emit something like ".long Hi+Offset-Lo" + /// where the size in bytes of the directive is specified by Size and Hi/Lo + /// specify the labels. This implicitly uses .set if it is available. + void EmitLabelOffsetDifference(const MCSymbol *Hi, uint64_t Offset, + const MCSymbol *Lo, unsigned Size) const; + + /// EmitLabelPlusOffset - Emit something like ".long Label+Offset" + /// where the size in bytes of the directive is specified by Size and Label + /// specifies the label. This implicitly uses .set if it is available. + void EmitLabelPlusOffset(const MCSymbol *Label, uint64_t Offset, + unsigned Size, + bool IsSectionRelative = false) const; + + /// EmitLabelReference - Emit something like ".long Label" + /// where the size in bytes of the directive is specified by Size and Label + /// specifies the label. + void EmitLabelReference(const MCSymbol *Label, unsigned Size, + bool IsSectionRelative = false) const { + EmitLabelPlusOffset(Label, 0, Size, IsSectionRelative); + } + + //===------------------------------------------------------------------===// + // Dwarf Emission Helper Routines + //===------------------------------------------------------------------===// + + /// EmitSLEB128 - emit the specified signed leb128 value. + void EmitSLEB128(int64_t Value, const char *Desc = 0) const; + + /// EmitULEB128 - emit the specified unsigned leb128 value. + void EmitULEB128(uint64_t Value, const char *Desc = 0, + unsigned PadTo = 0) const; + + /// EmitCFAByte - Emit a .byte 42 directive for a DW_CFA_xxx value. + void EmitCFAByte(unsigned Val) const; + + /// EmitEncodingByte - Emit a .byte 42 directive that corresponds to an + /// encoding. If verbose assembly output is enabled, we output comments + /// describing the encoding. Desc is a string saying what the encoding is + /// specifying (e.g. "LSDA"). + void EmitEncodingByte(unsigned Val, const char *Desc = 0) const; + + /// GetSizeOfEncodedValue - Return the size of the encoding in bytes. + unsigned GetSizeOfEncodedValue(unsigned Encoding) const; + + /// EmitReference - Emit reference to a ttype global with a specified encoding. + void EmitTTypeReference(const GlobalValue *GV, unsigned Encoding) const; + + /// EmitSectionOffset - Emit the 4-byte offset of Label from the start of + /// its section. This can be done with a special directive if the target + /// supports it (e.g. cygwin) or by emitting it as an offset from a label at + /// the start of the section. /// - void EmitInt64(uint64_t Value) const; + /// SectionLabel is a temporary label emitted at the start of the section + /// that Label lives in. + void EmitSectionOffset(const MCSymbol *Label, + const MCSymbol *SectionLabel) const; - /// EmitString - Emit a string with quotes and a null terminator. - /// Special characters are emitted properly. - /// @verbatim (Eg. '\t') @endverbatim - void EmitString(const StringRef String) const; - void EmitString(const char *String, unsigned Size) const; + /// getISAEncoding - Get the value for DW_AT_APPLE_isa. Zero if no isa + /// encoding specified. + virtual unsigned getISAEncoding() { return 0; } - /// EmitFile - Emit a .file directive. - void EmitFile(unsigned Number, StringRef Name) const; + /// EmitDwarfRegOp - Emit dwarf register operation. + virtual void EmitDwarfRegOp(const MachineLocation &MLoc, + bool Indirect) const; //===------------------------------------------------------------------===// + // Dwarf Lowering Routines + //===------------------------------------------------------------------===// - /// EmitAlignment - Emit an alignment directive to the specified power of - /// two boundary. For example, if you pass in 3 here, you will get an 8 - /// byte alignment. If a global value is specified, and if that global has - /// an explicit alignment requested, it will unconditionally override the - /// alignment request. However, if ForcedAlignBits is specified, this value - /// has final say: the ultimate alignment will be the max of ForcedAlignBits - /// and the alignment computed with NumBits and the global. If UseFillExpr - /// is true, it also emits an optional second value FillValue which the - /// assembler uses to fill gaps to match alignment for text sections if the - /// has specified a non-zero fill value. - /// - /// The algorithm is: - /// Align = NumBits; - /// if (GV && GV->hasalignment) Align = GV->getalignment(); - /// Align = std::max(Align, ForcedAlignBits); - /// - void EmitAlignment(unsigned NumBits, const GlobalValue *GV = 0, - unsigned ForcedAlignBits = 0, - bool UseFillExpr = true) const; - - /// printLabel - This method prints a local label used by debug and - /// exception handling tables. - void printLabel(const MachineInstr *MI) const; - void printLabel(unsigned Id) const; - - /// printDeclare - This method prints a local variable declaration used by - /// debug tables. - void printDeclare(const MachineInstr *MI) const; - - /// EmitComments - Pretty-print comments for instructions - void EmitComments(const MachineInstr &MI) const; - /// EmitComments - Pretty-print comments for basic blocks - void EmitComments(const MachineBasicBlock &MBB) const; - - /// GetGlobalValueSymbol - Return the MCSymbol for the specified global - /// value. - MCSymbol *GetGlobalValueSymbol(const GlobalValue *GV) const; - - /// GetSymbolWithGlobalValueBase - Return the MCSymbol for a symbol with - /// global value name as its base, with the specified suffix, and where the - /// symbol is forced to have private linkage if ForcePrivate is true. - MCSymbol *GetSymbolWithGlobalValueBase(const GlobalValue *GV, - StringRef Suffix, - bool ForcePrivate = true) const; - - /// GetExternalSymbolSymbol - Return the MCSymbol for the specified - /// ExternalSymbol. - MCSymbol *GetExternalSymbolSymbol(StringRef Sym) const; - - /// GetMBBSymbol - Return the MCSymbol corresponding to the specified basic - /// block label. - MCSymbol *GetMBBSymbol(unsigned MBBID) const; - - /// GetBlockAddressSymbol - Return the MCSymbol used to satisfy BlockAddress - /// uses of the specified basic block. - MCSymbol *GetBlockAddressSymbol(const BlockAddress *BA, - const char *Suffix = "") const; - MCSymbol *GetBlockAddressSymbol(const Function *F, - const BasicBlock *BB, - const char *Suffix = "") const; + /// \brief Emit frame instruction to describe the layout of the frame. + void emitCFIInstruction(const MCCFIInstruction &Inst) const; - /// EmitBasicBlockStart - This method prints the label for the specified - /// MachineBasicBlock, an alignment (if present) and a comment describing - /// it if appropriate. - void EmitBasicBlockStart(const MachineBasicBlock *MBB) const; - protected: - /// EmitZeros - Emit a block of zeros. - /// - void EmitZeros(uint64_t NumZeros, unsigned AddrSpace = 0) const; + //===------------------------------------------------------------------===// + // Inline Asm Support + //===------------------------------------------------------------------===// + public: + // These are hooks that targets can override to implement inline asm + // support. These should probably be moved out of AsmPrinter someday. - /// EmitString - Emit a zero-byte-terminated string constant. - /// - virtual void EmitString(const ConstantArray *CVA) const; + /// PrintSpecial - Print information related to the specified machine instr + /// that is independent of the operand, and may be independent of the instr + /// itself. This can be useful for portably encoding the comment character + /// or other bits of target-specific knowledge into the asmstrings. The + /// syntax used is ${:comment}. Targets can override this to add support + /// for their own strange codes. + virtual void PrintSpecial(const MachineInstr *MI, raw_ostream &OS, + const char *Code) const; - /// EmitConstantValueOnly - Print out the specified constant, without a - /// storage class. Only constants of first-class type are allowed here. - void EmitConstantValueOnly(const Constant *CV); + /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM + /// instruction, using the specified assembler variant. Targets should + /// override this to format as appropriate. This method can return true if + /// the operand is erroneous. + virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, + unsigned AsmVariant, const char *ExtraCode, + raw_ostream &OS); - /// EmitGlobalConstant - Print a general LLVM constant to the .s file. - void EmitGlobalConstant(const Constant* CV, unsigned AddrSpace = 0); + /// PrintAsmMemoryOperand - Print the specified operand of MI, an INLINEASM + /// instruction, using the specified assembler variant as an address. + /// Targets should override this to format as appropriate. This method can + /// return true if the operand is erroneous. + virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, + unsigned AsmVariant, + const char *ExtraCode, raw_ostream &OS); + + /// Let the target do anything it needs to do after emitting inlineasm. + /// This callback can be used restore the original mode in case the + /// inlineasm contains directives to switch modes. + /// \p StartInfo - the original subtarget info before inline asm + /// \p EndInfo - the final subtarget info after parsing the inline asm, + /// or NULL if the value is unknown. + virtual void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo, + const MCSubtargetInfo *EndInfo) const; - virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV); + private: + /// Private state for PrintSpecial() + // Assign a unique ID to this machine instruction. + mutable const MachineInstr *LastMI; + mutable unsigned LastFn; + mutable unsigned Counter; + mutable unsigned SetCounter; - /// processDebugLoc - Processes the debug information of each machine - /// instruction's DebugLoc. - void processDebugLoc(const MachineInstr *MI, bool BeforePrintingInsn); - - /// printInlineAsm - This method formats and prints the specified machine + /// EmitInlineAsm - Emit a blob of inline asm to the output streamer. + void EmitInlineAsm(StringRef Str, const MDNode *LocMDNode = 0, + InlineAsm::AsmDialect AsmDialect = + InlineAsm::AD_ATT) const; + + /// EmitInlineAsm - This method formats and emits the specified machine /// instruction that is an inline asm. - void printInlineAsm(const MachineInstr *MI) const; - - /// printImplicitDef - This method prints the specified machine instruction - /// that is an implicit def. - void printImplicitDef(const MachineInstr *MI) const; - - /// printKill - This method prints the specified kill machine instruction. - void printKill(const MachineInstr *MI) const; - - /// printPICJumpTableSetLabel - This method prints a set label for the - /// specified MachineBasicBlock for a jumptable entry. - virtual void printPICJumpTableSetLabel(unsigned uid, - const MachineBasicBlock *MBB) const; - virtual void printPICJumpTableSetLabel(unsigned uid, unsigned uid2, - const MachineBasicBlock *MBB) const; - virtual void printPICJumpTableEntry(const MachineJumpTableInfo *MJTI, - const MachineBasicBlock *MBB, - unsigned uid) const; - - /// printDataDirective - This method prints the asm directive for the - /// specified type. - void printDataDirective(const Type *type, unsigned AddrSpace = 0); - - /// printVisibility - This prints visibility information about symbol, if + void EmitInlineAsm(const MachineInstr *MI) const; + + //===------------------------------------------------------------------===// + // Internal Implementation Details + //===------------------------------------------------------------------===// + + /// EmitVisibility - This emits visibility information about symbol, if /// this is suported by the target. - void printVisibility(const MCSymbol *Sym, unsigned Visibility) const; - - /// printOffset - This is just convenient handler for printing offsets. - void printOffset(int64_t Offset) const; - - private: - void EmitLLVMUsedList(Constant *List); - void EmitXXStructorList(Constant *List); - void EmitGlobalConstantStruct(const ConstantStruct* CVS, - unsigned AddrSpace); - void EmitGlobalConstantArray(const ConstantArray* CVA, unsigned AddrSpace); - void EmitGlobalConstantVector(const ConstantVector* CP); - void EmitGlobalConstantFP(const ConstantFP* CFP, unsigned AddrSpace); - void EmitGlobalConstantLargeInt(const ConstantInt* CI, unsigned AddrSpace); + void EmitVisibility(MCSymbol *Sym, unsigned Visibility, + bool IsDefinition = true) const; + + void EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const; + + void EmitJumpTableEntry(const MachineJumpTableInfo *MJTI, + const MachineBasicBlock *MBB, unsigned uid) const; + void EmitLLVMUsedList(const ConstantArray *InitList); + /// Emit llvm.ident metadata in an '.ident' directive. + void EmitModuleIdents(Module &M); + void EmitXXStructorList(const Constant *List, bool isCtor); GCMetadataPrinter *GetOrCreateGCPrinter(GCStrategy *C); }; }