LCOV - code coverage report
Current view: top level - include/llvm/MC - MCContext.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 55 66 83.3 %
Date: 2017-09-14 15:23:50 Functions: 4 5 80.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===- MCContext.h - Machine Code Context -----------------------*- C++ -*-===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : 
      10             : #ifndef LLVM_MC_MCCONTEXT_H
      11             : #define LLVM_MC_MCCONTEXT_H
      12             : 
      13             : #include "llvm/ADT/DenseMap.h"
      14             : #include "llvm/ADT/SetVector.h"
      15             : #include "llvm/ADT/SmallString.h"
      16             : #include "llvm/ADT/SmallVector.h"
      17             : #include "llvm/ADT/StringMap.h"
      18             : #include "llvm/ADT/StringRef.h"
      19             : #include "llvm/ADT/Twine.h"
      20             : #include "llvm/BinaryFormat/Dwarf.h"
      21             : #include "llvm/MC/MCDwarf.h"
      22             : #include "llvm/MC/MCSubtargetInfo.h"
      23             : #include "llvm/MC/SectionKind.h"
      24             : #include "llvm/Support/Allocator.h"
      25             : #include "llvm/Support/Compiler.h"
      26             : #include "llvm/Support/raw_ostream.h"
      27             : #include <algorithm>
      28             : #include <cassert>
      29             : #include <cstddef>
      30             : #include <cstdint>
      31             : #include <map>
      32             : #include <memory>
      33             : #include <string>
      34             : #include <utility>
      35             : #include <vector>
      36             : 
      37             : namespace llvm {
      38             : 
      39             :   class CodeViewContext;
      40             :   class MCAsmInfo;
      41             :   class MCLabel;
      42             :   class MCObjectFileInfo;
      43             :   class MCRegisterInfo;
      44             :   class MCSection;
      45             :   class MCSectionCOFF;
      46             :   class MCSectionELF;
      47             :   class MCSectionMachO;
      48             :   class MCSectionWasm;
      49             :   class MCStreamer;
      50             :   class MCSymbol;
      51             :   class MCSymbolELF;
      52             :   class MCSymbolWasm;
      53             :   class SMLoc;
      54             :   class SourceMgr;
      55             : 
      56             :   /// Context object for machine code objects.  This class owns all of the
      57             :   /// sections that it creates.
      58             :   ///
      59             :   class MCContext {
      60             :   public:
      61             :     using SymbolTable = StringMap<MCSymbol *, BumpPtrAllocator &>;
      62             : 
      63             :   private:
      64             :     /// The SourceMgr for this object, if any.
      65             :     const SourceMgr *SrcMgr;
      66             : 
      67             :     /// The SourceMgr for inline assembly, if any.
      68             :     SourceMgr *InlineSrcMgr;
      69             : 
      70             :     /// The MCAsmInfo for this target.
      71             :     const MCAsmInfo *MAI;
      72             : 
      73             :     /// The MCRegisterInfo for this target.
      74             :     const MCRegisterInfo *MRI;
      75             : 
      76             :     /// The MCObjectFileInfo for this target.
      77             :     const MCObjectFileInfo *MOFI;
      78             : 
      79             :     std::unique_ptr<CodeViewContext> CVContext;
      80             : 
      81             :     /// Allocator object used for creating machine code objects.
      82             :     ///
      83             :     /// We use a bump pointer allocator to avoid the need to track all allocated
      84             :     /// objects.
      85             :     BumpPtrAllocator Allocator;
      86             : 
      87             :     SpecificBumpPtrAllocator<MCSectionCOFF> COFFAllocator;
      88             :     SpecificBumpPtrAllocator<MCSectionELF> ELFAllocator;
      89             :     SpecificBumpPtrAllocator<MCSectionMachO> MachOAllocator;
      90             :     SpecificBumpPtrAllocator<MCSectionWasm> WasmAllocator;
      91             : 
      92             :     /// Bindings of names to symbols.
      93             :     SymbolTable Symbols;
      94             : 
      95             :     /// A mapping from a local label number and an instance count to a symbol.
      96             :     /// For example, in the assembly
      97             :     ///     1:
      98             :     ///     2:
      99             :     ///     1:
     100             :     /// We have three labels represented by the pairs (1, 0), (2, 0) and (1, 1)
     101             :     DenseMap<std::pair<unsigned, unsigned>, MCSymbol *> LocalSymbols;
     102             : 
     103             :     /// Keeps tracks of names that were used both for used declared and
     104             :     /// artificial symbols. The value is "true" if the name has been used for a
     105             :     /// non-section symbol (there can be at most one of those, plus an unlimited
     106             :     /// number of section symbols with the same name).
     107             :     StringMap<bool, BumpPtrAllocator &> UsedNames;
     108             : 
     109             :     /// The next ID to dole out to an unnamed assembler temporary symbol with
     110             :     /// a given prefix.
     111             :     StringMap<unsigned> NextID;
     112             : 
     113             :     /// Instances of directional local labels.
     114             :     DenseMap<unsigned, MCLabel *> Instances;
     115             :     /// NextInstance() creates the next instance of the directional local label
     116             :     /// for the LocalLabelVal and adds it to the map if needed.
     117             :     unsigned NextInstance(unsigned LocalLabelVal);
     118             :     /// GetInstance() gets the current instance of the directional local label
     119             :     /// for the LocalLabelVal and adds it to the map if needed.
     120             :     unsigned GetInstance(unsigned LocalLabelVal);
     121             : 
     122             :     /// The file name of the log file from the environment variable
     123             :     /// AS_SECURE_LOG_FILE.  Which must be set before the .secure_log_unique
     124             :     /// directive is used or it is an error.
     125             :     char *SecureLogFile;
     126             :     /// The stream that gets written to for the .secure_log_unique directive.
     127             :     std::unique_ptr<raw_fd_ostream> SecureLog;
     128             :     /// Boolean toggled when .secure_log_unique / .secure_log_reset is seen to
     129             :     /// catch errors if .secure_log_unique appears twice without
     130             :     /// .secure_log_reset appearing between them.
     131             :     bool SecureLogUsed = false;
     132             : 
     133             :     /// The compilation directory to use for DW_AT_comp_dir.
     134             :     SmallString<128> CompilationDir;
     135             : 
     136             :     /// The main file name if passed in explicitly.
     137             :     std::string MainFileName;
     138             : 
     139             :     /// The dwarf file and directory tables from the dwarf .file directive.
     140             :     /// We now emit a line table for each compile unit. To reduce the prologue
     141             :     /// size of each line table, the files and directories used by each compile
     142             :     /// unit are separated.
     143             :     std::map<unsigned, MCDwarfLineTable> MCDwarfLineTablesCUMap;
     144             : 
     145             :     /// The current dwarf line information from the last dwarf .loc directive.
     146             :     MCDwarfLoc CurrentDwarfLoc;
     147             :     bool DwarfLocSeen = false;
     148             : 
     149             :     /// Generate dwarf debugging info for assembly source files.
     150             :     bool GenDwarfForAssembly = false;
     151             : 
     152             :     /// The current dwarf file number when generate dwarf debugging info for
     153             :     /// assembly source files.
     154             :     unsigned GenDwarfFileNumber = 0;
     155             : 
     156             :     /// Sections for generating the .debug_ranges and .debug_aranges sections.
     157             :     SetVector<MCSection *> SectionsForRanges;
     158             : 
     159             :     /// The information gathered from labels that will have dwarf label
     160             :     /// entries when generating dwarf assembly source files.
     161             :     std::vector<MCGenDwarfLabelEntry> MCGenDwarfLabelEntries;
     162             : 
     163             :     /// The string to embed in the debug information for the compile unit, if
     164             :     /// non-empty.
     165             :     StringRef DwarfDebugFlags;
     166             : 
     167             :     /// The string to embed in as the dwarf AT_producer for the compile unit, if
     168             :     /// non-empty.
     169             :     StringRef DwarfDebugProducer;
     170             : 
     171             :     /// The maximum version of dwarf that we should emit.
     172             :     uint16_t DwarfVersion = 4;
     173             : 
     174             :     /// Honor temporary labels, this is useful for debugging semantic
     175             :     /// differences between temporary and non-temporary labels (primarily on
     176             :     /// Darwin).
     177             :     bool AllowTemporaryLabels = true;
     178             :     bool UseNamesOnTempLabels = true;
     179             : 
     180             :     /// The Compile Unit ID that we are currently processing.
     181             :     unsigned DwarfCompileUnitID = 0;
     182             : 
     183    13264559 :     struct ELFSectionKey {
     184             :       std::string SectionName;
     185             :       StringRef GroupName;
     186             :       unsigned UniqueID;
     187             : 
     188             :       ELFSectionKey(StringRef SectionName, StringRef GroupName,
     189             :                     unsigned UniqueID)
     190     2802129 :           : SectionName(SectionName), GroupName(GroupName), UniqueID(UniqueID) {
     191             :       }
     192             : 
     193    12646089 :       bool operator<(const ELFSectionKey &Other) const {
     194    25292178 :         if (SectionName != Other.SectionName)
     195    24554990 :           return SectionName < Other.SectionName;
     196             :         if (GroupName != Other.GroupName)
     197         140 :           return GroupName < Other.GroupName;
     198      368454 :         return UniqueID < Other.UniqueID;
     199             :       }
     200             :     };
     201             : 
     202      337514 :     struct COFFSectionKey {
     203             :       std::string SectionName;
     204             :       StringRef GroupName;
     205             :       int SelectionKey;
     206             :       unsigned UniqueID;
     207             : 
     208             :       COFFSectionKey(StringRef SectionName, StringRef GroupName,
     209             :                      int SelectionKey, unsigned UniqueID)
     210       33959 :           : SectionName(SectionName), GroupName(GroupName),
     211       33959 :             SelectionKey(SelectionKey), UniqueID(UniqueID) {}
     212             : 
     213      220767 :       bool operator<(const COFFSectionKey &Other) const {
     214      441534 :         if (SectionName != Other.SectionName)
     215      437062 :           return SectionName < Other.SectionName;
     216             :         if (GroupName != Other.GroupName)
     217        1432 :           return GroupName < Other.GroupName;
     218         804 :         if (SelectionKey != Other.SelectionKey)
     219          19 :           return SelectionKey < Other.SelectionKey;
     220         785 :         return UniqueID < Other.UniqueID;
     221             :       }
     222             :     };
     223             : 
     224           0 :     struct WasmSectionKey {
     225             :       std::string SectionName;
     226             :       StringRef GroupName;
     227             :       unsigned UniqueID;
     228             : 
     229             :       WasmSectionKey(StringRef SectionName, StringRef GroupName,
     230             :                      unsigned UniqueID)
     231           0 :           : SectionName(SectionName), GroupName(GroupName), UniqueID(UniqueID) {
     232             :       }
     233             : 
     234           0 :       bool operator<(const WasmSectionKey &Other) const {
     235           0 :         if (SectionName != Other.SectionName)
     236           0 :           return SectionName < Other.SectionName;
     237             :         if (GroupName != Other.GroupName)
     238           0 :           return GroupName < Other.GroupName;
     239           0 :         return UniqueID < Other.UniqueID;
     240             :       }
     241             :     };
     242             : 
     243             :     StringMap<MCSectionMachO *> MachOUniquingMap;
     244             :     std::map<ELFSectionKey, MCSectionELF *> ELFUniquingMap;
     245             :     std::map<COFFSectionKey, MCSectionCOFF *> COFFUniquingMap;
     246             :     std::map<WasmSectionKey, MCSectionWasm *> WasmUniquingMap;
     247             :     StringMap<bool> RelSecNames;
     248             : 
     249             :     SpecificBumpPtrAllocator<MCSubtargetInfo> MCSubtargetAllocator;
     250             : 
     251             :     /// Do automatic reset in destructor
     252             :     bool AutoReset;
     253             : 
     254             :     bool HadError = false;
     255             : 
     256             :     MCSymbol *createSymbolImpl(const StringMapEntry<bool> *Name,
     257             :                                bool CanBeUnnamed);
     258             :     MCSymbol *createSymbol(StringRef Name, bool AlwaysAddSuffix,
     259             :                            bool IsTemporary);
     260             : 
     261             :     MCSymbol *getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal,
     262             :                                                 unsigned Instance);
     263             : 
     264             :     MCSectionELF *createELFSectionImpl(StringRef Section, unsigned Type,
     265             :                                        unsigned Flags, SectionKind K,
     266             :                                        unsigned EntrySize,
     267             :                                        const MCSymbolELF *Group,
     268             :                                        unsigned UniqueID,
     269             :                                        const MCSymbolELF *Associated);
     270             : 
     271             :   public:
     272             :     explicit MCContext(const MCAsmInfo *MAI, const MCRegisterInfo *MRI,
     273             :                        const MCObjectFileInfo *MOFI,
     274             :                        const SourceMgr *Mgr = nullptr, bool DoAutoReset = true);
     275             :     MCContext(const MCContext &) = delete;
     276             :     MCContext &operator=(const MCContext &) = delete;
     277             :     ~MCContext();
     278             : 
     279             :     const SourceMgr *getSourceManager() const { return SrcMgr; }
     280             : 
     281         453 :     void setInlineSourceManager(SourceMgr *SM) { InlineSrcMgr = SM; }
     282             : 
     283             :     const MCAsmInfo *getAsmInfo() const { return MAI; }
     284             : 
     285             :     const MCRegisterInfo *getRegisterInfo() const { return MRI; }
     286             : 
     287             :     const MCObjectFileInfo *getObjectFileInfo() const { return MOFI; }
     288             : 
     289             :     CodeViewContext &getCVContext();
     290             : 
     291           4 :     void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; }
     292        3752 :     void setUseNamesOnTempLabels(bool Value) { UseNamesOnTempLabels = Value; }
     293             : 
     294             :     /// \name Module Lifetime Management
     295             :     /// @{
     296             : 
     297             :     /// reset - return object to right after construction state to prepare
     298             :     /// to process a new module
     299             :     void reset();
     300             : 
     301             :     /// @}
     302             : 
     303             :     /// \name Symbol Management
     304             :     /// @{
     305             : 
     306             :     /// Create and return a new linker temporary symbol with a unique but
     307             :     /// unspecified name.
     308             :     MCSymbol *createLinkerPrivateTempSymbol();
     309             : 
     310             :     /// Create and return a new assembler temporary symbol with a unique but
     311             :     /// unspecified name.
     312             :     MCSymbol *createTempSymbol(bool CanBeUnnamed = true);
     313             : 
     314             :     MCSymbol *createTempSymbol(const Twine &Name, bool AlwaysAddSuffix,
     315             :                                bool CanBeUnnamed = true);
     316             : 
     317             :     /// Create the definition of a directional local symbol for numbered label
     318             :     /// (used for "1:" definitions).
     319             :     MCSymbol *createDirectionalLocalSymbol(unsigned LocalLabelVal);
     320             : 
     321             :     /// Create and return a directional local symbol for numbered label (used
     322             :     /// for "1b" or 1f" references).
     323             :     MCSymbol *getDirectionalLocalSymbol(unsigned LocalLabelVal, bool Before);
     324             : 
     325             :     /// Lookup the symbol inside with the specified \p Name.  If it exists,
     326             :     /// return it.  If not, create a forward reference and return it.
     327             :     ///
     328             :     /// \param Name - The symbol name, which must be unique across all symbols.
     329             :     MCSymbol *getOrCreateSymbol(const Twine &Name);
     330             : 
     331             :     /// Gets a symbol that will be defined to the final stack offset of a local
     332             :     /// variable after codegen.
     333             :     ///
     334             :     /// \param Idx - The index of a local variable passed to @llvm.localescape.
     335             :     MCSymbol *getOrCreateFrameAllocSymbol(StringRef FuncName, unsigned Idx);
     336             : 
     337             :     MCSymbol *getOrCreateParentFrameOffsetSymbol(StringRef FuncName);
     338             : 
     339             :     MCSymbol *getOrCreateLSDASymbol(StringRef FuncName);
     340             : 
     341             :     /// Get the symbol for \p Name, or null.
     342             :     MCSymbol *lookupSymbol(const Twine &Name) const;
     343             : 
     344             :     /// Set value for a symbol.
     345             :     void setSymbolValue(MCStreamer &Streamer, StringRef Sym, uint64_t Val);
     346             : 
     347             :     /// getSymbols - Get a reference for the symbol table for clients that
     348             :     /// want to, for example, iterate over all symbols. 'const' because we
     349             :     /// still want any modifications to the table itself to use the MCContext
     350             :     /// APIs.
     351             :     const SymbolTable &getSymbols() const { return Symbols; }
     352             : 
     353             :     /// @}
     354             : 
     355             :     /// \name Section Management
     356             :     /// @{
     357             : 
     358             :     enum : unsigned {
     359             :       /// Pass this value as the UniqueID during section creation to get the
     360             :       /// generic section with the given name and characteristics. The usual
     361             :       /// sections such as .text use this ID.
     362             :       GenericSectionID = ~0U
     363             :     };
     364             : 
     365             :     /// Return the MCSection for the specified mach-o section.  This requires
     366             :     /// the operands to be valid.
     367             :     MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
     368             :                                     unsigned TypeAndAttributes,
     369             :                                     unsigned Reserved2, SectionKind K,
     370             :                                     const char *BeginSymName = nullptr);
     371             : 
     372             :     MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
     373             :                                     unsigned TypeAndAttributes, SectionKind K,
     374             :                                     const char *BeginSymName = nullptr) {
     375             :       return getMachOSection(Segment, Section, TypeAndAttributes, 0, K,
     376      140727 :                              BeginSymName);
     377             :     }
     378             : 
     379             :     MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
     380             :                                 unsigned Flags) {
     381     1541714 :       return getELFSection(Section, Type, Flags, 0, "");
     382             :     }
     383             : 
     384             :     MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
     385             :                                 unsigned Flags, unsigned EntrySize,
     386             :                                 const Twine &Group) {
     387      887945 :       return getELFSection(Section, Type, Flags, EntrySize, Group, ~0);
     388             :     }
     389             : 
     390             :     MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
     391             :                                 unsigned Flags, unsigned EntrySize,
     392             :                                 const Twine &Group, unsigned UniqueID) {
     393             :       return getELFSection(Section, Type, Flags, EntrySize, Group, UniqueID,
     394      887945 :                            nullptr);
     395             :     }
     396             : 
     397             :     MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
     398             :                                 unsigned Flags, unsigned EntrySize,
     399             :                                 const Twine &Group, unsigned UniqueID,
     400             :                                 const MCSymbolELF *Associated);
     401             : 
     402             :     MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
     403             :                                 unsigned Flags, unsigned EntrySize,
     404             :                                 const MCSymbolELF *Group, unsigned UniqueID,
     405             :                                 const MCSymbolELF *Associated);
     406             : 
     407             :     /// Get a section with the provided group identifier. This section is
     408             :     /// named by concatenating \p Prefix with '.' then \p Suffix. The \p Type
     409             :     /// describes the type of the section and \p Flags are used to further
     410             :     /// configure this named section.
     411             :     MCSectionELF *getELFNamedSection(const Twine &Prefix, const Twine &Suffix,
     412             :                                      unsigned Type, unsigned Flags,
     413             :                                      unsigned EntrySize = 0);
     414             : 
     415             :     MCSectionELF *createELFRelSection(const Twine &Name, unsigned Type,
     416             :                                       unsigned Flags, unsigned EntrySize,
     417             :                                       const MCSymbolELF *Group,
     418             :                                       const MCSectionELF *RelInfoSection);
     419             : 
     420             :     void renameELFSection(MCSectionELF *Section, StringRef Name);
     421             : 
     422             :     MCSectionELF *createELFGroupSection(const MCSymbolELF *Group);
     423             : 
     424             :     MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
     425             :                                   SectionKind Kind, StringRef COMDATSymName,
     426             :                                   int Selection,
     427             :                                   unsigned UniqueID = GenericSectionID,
     428             :                                   const char *BeginSymName = nullptr);
     429             : 
     430             :     MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
     431             :                                   SectionKind Kind,
     432             :                                   const char *BeginSymName = nullptr);
     433             : 
     434             :     MCSectionCOFF *getCOFFSection(StringRef Section);
     435             : 
     436             :     /// Gets or creates a section equivalent to Sec that is associated with the
     437             :     /// section containing KeySym. For example, to create a debug info section
     438             :     /// associated with an inline function, pass the normal debug info section
     439             :     /// as Sec and the function symbol as KeySym.
     440             :     MCSectionCOFF *
     441             :     getAssociativeCOFFSection(MCSectionCOFF *Sec, const MCSymbol *KeySym,
     442             :                               unsigned UniqueID = GenericSectionID);
     443             : 
     444             :     MCSectionWasm *getWasmSection(const Twine &Section, unsigned Type) {
     445           0 :       return getWasmSection(Section, Type, nullptr);
     446             :     }
     447             : 
     448             :     MCSectionWasm *getWasmSection(const Twine &Section, unsigned Type,
     449             :                                   const char *BeginSymName) {
     450           0 :       return getWasmSection(Section, Type, "", ~0, BeginSymName);
     451             :     }
     452             : 
     453             :     MCSectionWasm *getWasmSection(const Twine &Section, unsigned Type,
     454             :                                   const Twine &Group, unsigned UniqueID) {
     455           0 :       return getWasmSection(Section, Type, Group, UniqueID, nullptr);
     456             :     }
     457             : 
     458             :     MCSectionWasm *getWasmSection(const Twine &Section, unsigned Type,
     459             :                                   const Twine &Group, unsigned UniqueID,
     460             :                                   const char *BeginSymName);
     461             : 
     462             :     MCSectionWasm *getWasmSection(const Twine &Section, unsigned Type,
     463             :                                   const MCSymbolWasm *Group, unsigned UniqueID,
     464             :                                   const char *BeginSymName);
     465             : 
     466             :     // Create and save a copy of STI and return a reference to the copy.
     467             :     MCSubtargetInfo &getSubtargetCopy(const MCSubtargetInfo &STI);
     468             : 
     469             :     /// @}
     470             : 
     471             :     /// \name Dwarf Management
     472             :     /// @{
     473             : 
     474             :     /// \brief Get the compilation directory for DW_AT_comp_dir
     475             :     /// The compilation directory should be set with \c setCompilationDir before
     476             :     /// calling this function. If it is unset, an empty string will be returned.
     477         156 :     StringRef getCompilationDir() const { return CompilationDir; }
     478             : 
     479             :     /// \brief Set the compilation directory for DW_AT_comp_dir
     480       23645 :     void setCompilationDir(StringRef S) { CompilationDir = S.str(); }
     481             : 
     482             :     /// \brief Get the main file name for use in error messages and debug
     483             :     /// info. This can be set to ensure we've got the correct file name
     484             :     /// after preprocessing or for -save-temps.
     485          29 :     const std::string &getMainFileName() const { return MainFileName; }
     486             : 
     487             :     /// \brief Set the main file name and override the default.
     488          12 :     void setMainFileName(StringRef S) { MainFileName = S; }
     489             : 
     490             :     /// Creates an entry in the dwarf file and directory tables.
     491             :     unsigned getDwarfFile(StringRef Directory, StringRef FileName,
     492             :                           unsigned FileNumber, unsigned CUID);
     493             : 
     494             :     bool isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID = 0);
     495             : 
     496             :     const std::map<unsigned, MCDwarfLineTable> &getMCDwarfLineTables() const {
     497       27544 :       return MCDwarfLineTablesCUMap;
     498             :     }
     499             : 
     500             :     MCDwarfLineTable &getMCDwarfLineTable(unsigned CUID) {
     501      424559 :       return MCDwarfLineTablesCUMap[CUID];
     502             :     }
     503             : 
     504             :     const MCDwarfLineTable &getMCDwarfLineTable(unsigned CUID) const {
     505             :       auto I = MCDwarfLineTablesCUMap.find(CUID);
     506             :       assert(I != MCDwarfLineTablesCUMap.end());
     507             :       return I->second;
     508             :     }
     509             : 
     510             :     const SmallVectorImpl<MCDwarfFile> &getMCDwarfFiles(unsigned CUID = 0) {
     511         110 :       return getMCDwarfLineTable(CUID).getMCDwarfFiles();
     512             :     }
     513             : 
     514             :     const SmallVectorImpl<std::string> &getMCDwarfDirs(unsigned CUID = 0) {
     515          26 :       return getMCDwarfLineTable(CUID).getMCDwarfDirs();
     516             :     }
     517             : 
     518             :     bool hasMCLineSections() const {
     519             :       for (const auto &Table : MCDwarfLineTablesCUMap)
     520             :         if (!Table.second.getMCDwarfFiles().empty() || Table.second.getLabel())
     521             :           return true;
     522             :       return false;
     523             :     }
     524             : 
     525             :     unsigned getDwarfCompileUnitID() { return DwarfCompileUnitID; }
     526             : 
     527             :     void setDwarfCompileUnitID(unsigned CUIndex) {
     528       12186 :       DwarfCompileUnitID = CUIndex;
     529             :     }
     530             : 
     531             :     void setMCLineTableCompilationDir(unsigned CUID, StringRef CompilationDir) {
     532         720 :       getMCDwarfLineTable(CUID).setCompilationDir(CompilationDir);
     533             :     }
     534             : 
     535             :     /// Saves the information from the currently parsed dwarf .loc directive
     536             :     /// and sets DwarfLocSeen.  When the next instruction is assembled an entry
     537             :     /// in the line number table with this information and the address of the
     538             :     /// instruction will be created.
     539             :     void setCurrentDwarfLoc(unsigned FileNum, unsigned Line, unsigned Column,
     540             :                             unsigned Flags, unsigned Isa,
     541             :                             unsigned Discriminator) {
     542      843536 :       CurrentDwarfLoc.setFileNum(FileNum);
     543      843536 :       CurrentDwarfLoc.setLine(Line);
     544      843536 :       CurrentDwarfLoc.setColumn(Column);
     545      843536 :       CurrentDwarfLoc.setFlags(Flags);
     546      843536 :       CurrentDwarfLoc.setIsa(Isa);
     547      843536 :       CurrentDwarfLoc.setDiscriminator(Discriminator);
     548      421768 :       DwarfLocSeen = true;
     549             :     }
     550             : 
     551      816854 :     void clearDwarfLocSeen() { DwarfLocSeen = false; }
     552             : 
     553             :     bool getDwarfLocSeen() { return DwarfLocSeen; }
     554             :     const MCDwarfLoc &getCurrentDwarfLoc() { return CurrentDwarfLoc; }
     555             : 
     556             :     bool getGenDwarfForAssembly() { return GenDwarfForAssembly; }
     557        4730 :     void setGenDwarfForAssembly(bool Value) { GenDwarfForAssembly = Value; }
     558             :     unsigned getGenDwarfFileNumber() { return GenDwarfFileNumber; }
     559             : 
     560             :     void setGenDwarfFileNumber(unsigned FileNumber) {
     561          41 :       GenDwarfFileNumber = FileNumber;
     562             :     }
     563             : 
     564             :     const SetVector<MCSection *> &getGenDwarfSectionSyms() {
     565          29 :       return SectionsForRanges;
     566             :     }
     567             : 
     568             :     bool addGenDwarfSection(MCSection *Sec) {
     569          42 :       return SectionsForRanges.insert(Sec);
     570             :     }
     571             : 
     572             :     void finalizeDwarfSections(MCStreamer &MCOS);
     573             : 
     574             :     const std::vector<MCGenDwarfLabelEntry> &getMCGenDwarfLabelEntries() const {
     575          26 :       return MCGenDwarfLabelEntries;
     576             :     }
     577             : 
     578             :     void addMCGenDwarfLabelEntry(const MCGenDwarfLabelEntry &E) {
     579          40 :       MCGenDwarfLabelEntries.push_back(E);
     580             :     }
     581             : 
     582           0 :     void setDwarfDebugFlags(StringRef S) { DwarfDebugFlags = S; }
     583             :     StringRef getDwarfDebugFlags() { return DwarfDebugFlags; }
     584             : 
     585           4 :     void setDwarfDebugProducer(StringRef S) { DwarfDebugProducer = S; }
     586             :     StringRef getDwarfDebugProducer() { return DwarfDebugProducer; }
     587             : 
     588             :     dwarf::DwarfFormat getDwarfFormat() const {
     589             :       // TODO: Support DWARF64
     590             :       return dwarf::DWARF32;
     591             :     }
     592             : 
     593       21484 :     void setDwarfVersion(uint16_t v) { DwarfVersion = v; }
     594             :     uint16_t getDwarfVersion() const { return DwarfVersion; }
     595             : 
     596             :     /// @}
     597             : 
     598             :     char *getSecureLogFile() { return SecureLogFile; }
     599           4 :     raw_fd_ostream *getSecureLog() { return SecureLog.get(); }
     600             : 
     601             :     void setSecureLog(std::unique_ptr<raw_fd_ostream> Value) {
     602           4 :       SecureLog = std::move(Value);
     603             :     }
     604             : 
     605             :     bool getSecureLogUsed() { return SecureLogUsed; }
     606           2 :     void setSecureLogUsed(bool Value) { SecureLogUsed = Value; }
     607             : 
     608             :     void *allocate(unsigned Size, unsigned Align = 8) {
     609     9633325 :       return Allocator.Allocate(Size, Align);
     610             :     }
     611             : 
     612             :     void deallocate(void *Ptr) {}
     613             : 
     614             :     bool hadError() { return HadError; }
     615             :     void reportError(SMLoc L, const Twine &Msg);
     616             :     // Unrecoverable error has occurred. Display the best diagnostic we can
     617             :     // and bail via exit(1). For now, most MC backend errors are unrecoverable.
     618             :     // FIXME: We should really do something about that.
     619             :     LLVM_ATTRIBUTE_NORETURN void reportFatalError(SMLoc L,
     620             :                                                   const Twine &Msg);
     621             :   };
     622             : 
     623             : } // end namespace llvm
     624             : 
     625             : // operator new and delete aren't allowed inside namespaces.
     626             : // The throw specifications are mandated by the standard.
     627             : /// \brief Placement new for using the MCContext's allocator.
     628             : ///
     629             : /// This placement form of operator new uses the MCContext's allocator for
     630             : /// obtaining memory. It is a non-throwing new, which means that it returns
     631             : /// null on error. (If that is what the allocator does. The current does, so if
     632             : /// this ever changes, this operator will have to be changed, too.)
     633             : /// Usage looks like this (assuming there's an MCContext 'Context' in scope):
     634             : /// \code
     635             : /// // Default alignment (8)
     636             : /// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments);
     637             : /// // Specific alignment
     638             : /// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments);
     639             : /// \endcode
     640             : /// Please note that you cannot use delete on the pointer; it must be
     641             : /// deallocated using an explicit destructor call followed by
     642             : /// \c Context.Deallocate(Ptr).
     643             : ///
     644             : /// \param Bytes The number of bytes to allocate. Calculated by the compiler.
     645             : /// \param C The MCContext that provides the allocator.
     646             : /// \param Alignment The alignment of the allocated memory (if the underlying
     647             : ///                  allocator supports it).
     648             : /// \return The allocated memory. Could be NULL.
     649             : inline void *operator new(size_t Bytes, llvm::MCContext &C,
     650             :                           size_t Alignment = 8) noexcept {
     651    13385797 :   return C.allocate(Bytes, Alignment);
     652             : }
     653             : /// \brief Placement delete companion to the new above.
     654             : ///
     655             : /// This operator is just a companion to the new above. There is no way of
     656             : /// invoking it directly; see the new operator for more details. This operator
     657             : /// is called implicitly by the compiler if a placement new expression using
     658             : /// the MCContext throws in the object constructor.
     659             : inline void operator delete(void *Ptr, llvm::MCContext &C, size_t) noexcept {
     660             :   C.deallocate(Ptr);
     661             : }
     662             : 
     663             : /// This placement form of operator new[] uses the MCContext's allocator for
     664             : /// obtaining memory. It is a non-throwing new[], which means that it returns
     665             : /// null on error.
     666             : /// Usage looks like this (assuming there's an MCContext 'Context' in scope):
     667             : /// \code
     668             : /// // Default alignment (8)
     669             : /// char *data = new (Context) char[10];
     670             : /// // Specific alignment
     671             : /// char *data = new (Context, 4) char[10];
     672             : /// \endcode
     673             : /// Please note that you cannot use delete on the pointer; it must be
     674             : /// deallocated using an explicit destructor call followed by
     675             : /// \c Context.Deallocate(Ptr).
     676             : ///
     677             : /// \param Bytes The number of bytes to allocate. Calculated by the compiler.
     678             : /// \param C The MCContext that provides the allocator.
     679             : /// \param Alignment The alignment of the allocated memory (if the underlying
     680             : ///                  allocator supports it).
     681             : /// \return The allocated memory. Could be NULL.
     682             : inline void *operator new[](size_t Bytes, llvm::MCContext &C,
     683             :                             size_t Alignment = 8) noexcept {
     684             :   return C.allocate(Bytes, Alignment);
     685             : }
     686             : 
     687             : /// \brief Placement delete[] companion to the new[] above.
     688             : ///
     689             : /// This operator is just a companion to the new[] above. There is no way of
     690             : /// invoking it directly; see the new[] operator for more details. This operator
     691             : /// is called implicitly by the compiler if a placement new[] expression using
     692             : /// the MCContext throws in the object constructor.
     693             : inline void operator delete[](void *Ptr, llvm::MCContext &C) noexcept {
     694             :   C.deallocate(Ptr);
     695             : }
     696             : 
     697             : #endif // LLVM_MC_MCCONTEXT_H

Generated by: LCOV version 1.13