#ifndef LLVM_CODEGEN_ASMPRINTER_H
#define LLVM_CODEGEN_ASMPRINTER_H
+#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/IR/InlineAsm.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
namespace llvm {
+ class AsmPrinterHandler;
class BlockAddress;
+ class ByteStreamer;
class GCStrategy;
class Constant;
class ConstantArray;
- class ConstantFP;
- class ConstantInt;
- class ConstantStruct;
- class ConstantVector;
class GCMetadataPrinter;
class GlobalValue;
class GlobalVariable;
class MachineLocation;
class MachineLoopInfo;
class MachineLoop;
- class MachineConstantPool;
- class MachineConstantPoolEntry;
class MachineConstantPoolValue;
class MachineJumpTableInfo;
class MachineModuleInfo;
- class MachineMove;
class MCAsmInfo;
- class MCInst;
+ class MCCFIInstruction;
class MCContext;
+ class MCInst;
+ class MCInstrInfo;
class MCSection;
class MCStreamer;
+ class MCSubtargetInfo;
class MCSymbol;
+ class MDNode;
class DwarfDebug;
class DwarfException;
class Mangler;
class TargetLoweringObjectFile;
- class TargetData;
+ class DataLayout;
class TargetMachine;
- class Twine;
- class Type;
/// AsmPrinter - This class is intended to be used as a driving class for all
/// asm writers.
///
const MCAsmInfo *MAI;
+ 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.
///
MCSymbol *CurrentFnSym;
+ /// 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.
/// 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<HandlerInfo, 1> Handlers;
+
/// DD - If the target supports dwarf debug info, this pointer is non-null.
DwarfDebug *DD;
- /// DE - If the target supports dwarf exception info, this pointer is
- /// non-null.
- DwarfException *DE;
-
protected:
explicit AsmPrinter(TargetMachine &TM, MCStreamer &Streamer);
public:
virtual ~AsmPrinter();
+ DwarfDebug *getDwarfDebug() { return DD; }
+
/// isVerbose - Return true if assembly output should contain comments.
///
bool isVerbose() const { return VerboseAsm; }
/// getObjFileLowering - Return information about object file lowering.
const TargetLoweringObjectFile &getObjFileLowering() const;
- /// getTargetData - Return information about data layout.
- const TargetData &getTargetData() 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<char> &Name,
+ const GlobalValue *GV) const;
+
+ MCSymbol *getSymbol(const GlobalValue *GV) const;
//===------------------------------------------------------------------===//
// MachineFunctionPass Implementation.
/// getAnalysisUsage - Record analysis usage.
///
- void getAnalysisUsage(AnalysisUsage &AU) const;
+ void getAnalysisUsage(AnalysisUsage &AU) const override;
/// 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);
+ bool doInitialization(Module &M) override;
/// doFinalization - Shut down the asmprinter. If you override this in your
/// pass, you must make sure to call it explicitly.
- bool doFinalization(Module &M);
+ bool doFinalization(Module &M) override;
/// runOnMachineFunction - Emit the specified function out to the
/// OutStreamer.
- virtual bool runOnMachineFunction(MachineFunction &MF) {
+ bool runOnMachineFunction(MachineFunction &MF) override {
SetupMachineFunction(MF);
EmitFunctionHeader();
EmitFunctionBody();
/// function.
void EmitFunctionBody();
+ void emitCFIInstruction(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
/// an explicit alignment requested, it will override the alignment request
/// if required for correctness.
///
- void EmitAlignment(unsigned NumBits, const GlobalValue *GV = 0) const;
+ void EmitAlignment(unsigned NumBits, const GlobalValue *GV = nullptr) 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;
+ void EmitBasicBlockStart(const MachineBasicBlock &MBB) const;
- /// EmitGlobalConstant - Print a general LLVM constant to the .s file.
- void EmitGlobalConstant(const Constant *CV, unsigned AddrSpace = 0);
+ /// \brief Print a general LLVM constant to the .s file.
+ void EmitGlobalConstant(const Constant *CV);
//===------------------------------------------------------------------===//
/// EmitInstruction - Targets should implement this to emit instructions.
virtual void EmitInstruction(const MachineInstr *) {
- assert(0 && "EmitInstruction not implemented");
+ llvm_unreachable("EmitInstruction not implemented");
}
+ /// GetCPISymbol - Return the symbol for the specified constant pool entry.
+ virtual MCSymbol *GetCPISymbol(unsigned CPID) 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.
//===------------------------------------------------------------------===//
/// GetTempSymbol - Return the MCSymbol corresponding to the assembler
/// temporary label with the specified stem and unique ID.
- MCSymbol *GetTempSymbol(StringRef Name, unsigned ID) const;
+ MCSymbol *GetTempSymbol(Twine Name, unsigned ID) const;
/// GetTempSymbol - Return an assembler temporary label with the specified
/// stem.
- MCSymbol *GetTempSymbol(StringRef Name) const;
-
+ MCSymbol *GetTempSymbol(Twine Name) 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;
+ /// 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;
/// 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) const;
+ 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(int Value, const char *Desc = 0) const;
+ void EmitSLEB128(int64_t Value, const char *Desc = nullptr) const;
/// EmitULEB128 - emit the specified unsigned leb128 value.
- void EmitULEB128(unsigned Value, const char *Desc = 0,
+ void EmitULEB128(uint64_t Value, const char *Desc = nullptr,
unsigned PadTo = 0) const;
/// EmitCFAByte - Emit a .byte 42 directive for a DW_CFA_xxx value.
/// 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;
+ void EmitEncodingByte(unsigned Val, const char *Desc = nullptr) const;
/// GetSizeOfEncodedValue - Return the size of the encoding in bytes.
unsigned GetSizeOfEncodedValue(unsigned Encoding) const;
- /// EmitReference - Emit a reference to a label with a specified encoding.
- ///
- void EmitReference(const MCSymbol *Sym, unsigned Encoding) const;
- void EmitReference(const GlobalValue *GV, 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
void EmitSectionOffset(const MCSymbol *Label,
const MCSymbol *SectionLabel) const;
- /// getDebugValueLocation - Get location information encoded by DBG_VALUE
- /// operands.
- virtual MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
-
/// getISAEncoding - Get the value for DW_AT_APPLE_isa. Zero if no isa
/// encoding specified.
virtual unsigned getISAEncoding() { return 0; }
+ /// \brief Emit a partial dwarf register operation.
+ /// \param MLoc the register
+ /// \param PieceSizeInBits size and
+ /// \param PieceOffsetBits offset of the piece in bits, if this is one
+ /// piece of an aggregate value.
+ void EmitDwarfRegOpPiece(ByteStreamer &BS, const MachineLocation &MLoc,
+ unsigned PieceSize,
+ unsigned PieceOffset) const;
+
+ /// EmitDwarfRegOp - Emit dwarf register operation.
+ /// \param Indirect whether this is a register-indirect address
+ virtual void EmitDwarfRegOp(ByteStreamer &BS, const MachineLocation &MLoc,
+ bool Indirect) const;
+
//===------------------------------------------------------------------===//
// Dwarf Lowering Routines
//===------------------------------------------------------------------===//
- /// EmitFrameMoves - Emit frame instructions to describe the layout of the
- /// frame.
- void EmitFrameMoves(const std::vector<MachineMove> &Moves,
- MCSymbol *BaseLabel, bool isEH) const;
-
+ /// \brief Emit frame instruction to describe the layout of the frame.
+ void emitCFIInstruction(const MCCFIInstruction &Inst) const;
//===------------------------------------------------------------------===//
// Inline Asm Support
/// return true if the operand is erroneous.
virtual bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant,
- const char *ExtraCode,
- raw_ostream &OS);
+ 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;
private:
/// Private state for PrintSpecial()
mutable unsigned SetCounter;
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
- void EmitInlineAsm(StringRef Str, unsigned LocCookie) const;
+ void EmitInlineAsm(StringRef Str, const MDNode *LocMDNode = nullptr,
+ InlineAsm::AsmDialect AsmDialect =
+ InlineAsm::AD_ATT) const;
/// EmitInlineAsm - This method formats and emits the specified machine
/// instruction that is an inline asm.
/// EmitVisibility - This emits visibility information about symbol, if
/// this is suported by the target.
- void EmitVisibility(MCSymbol *Sym, unsigned Visibility) const;
+ void EmitVisibility(MCSymbol *Sym, unsigned Visibility,
+ bool IsDefinition = true) const;
- void EmitLinkage(unsigned Linkage, MCSymbol *GVSym) const;
+ void EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const;
void EmitJumpTableEntry(const MachineJumpTableInfo *MJTI,
- const MachineBasicBlock *MBB,
- unsigned uid) const;
- void EmitLLVMUsedList(Constant *List);
- void EmitXXStructorList(Constant *List);
- GCMetadataPrinter *GetOrCreateGCPrinter(GCStrategy *C);
+ 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);
};
}
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