Coverage Report

Created: 2018-11-16 02:38

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/include/llvm/MC/MCContext.h
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//===- MCContext.h - Machine Code Context -----------------------*- C++ -*-===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCCONTEXT_H
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#define LLVM_MC_MCCONTEXT_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/BinaryFormat/Dwarf.h"
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#include "llvm/MC/MCAsmMacro.h"
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#include "llvm/MC/MCDwarf.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/SectionKind.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/MD5.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <map>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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namespace llvm {
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  class CodeViewContext;
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  class MCAsmInfo;
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  class MCLabel;
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  class MCObjectFileInfo;
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  class MCRegisterInfo;
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  class MCSection;
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  class MCSectionCOFF;
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  class MCSectionELF;
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  class MCSectionMachO;
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  class MCSectionWasm;
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  class MCStreamer;
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  class MCSymbol;
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  class MCSymbolELF;
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  class MCSymbolWasm;
57
  class SMLoc;
58
  class SourceMgr;
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  /// Context object for machine code objects.  This class owns all of the
61
  /// sections that it creates.
62
  ///
63
  class MCContext {
64
  public:
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    using SymbolTable = StringMap<MCSymbol *, BumpPtrAllocator &>;
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  private:
68
    /// The SourceMgr for this object, if any.
69
    const SourceMgr *SrcMgr;
70
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    /// The SourceMgr for inline assembly, if any.
72
    SourceMgr *InlineSrcMgr;
73
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    /// The MCAsmInfo for this target.
75
    const MCAsmInfo *MAI;
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    /// The MCRegisterInfo for this target.
78
    const MCRegisterInfo *MRI;
79
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    /// The MCObjectFileInfo for this target.
81
    const MCObjectFileInfo *MOFI;
82
83
    std::unique_ptr<CodeViewContext> CVContext;
84
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    /// Allocator object used for creating machine code objects.
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    ///
87
    /// We use a bump pointer allocator to avoid the need to track all allocated
88
    /// objects.
89
    BumpPtrAllocator Allocator;
90
91
    SpecificBumpPtrAllocator<MCSectionCOFF> COFFAllocator;
92
    SpecificBumpPtrAllocator<MCSectionELF> ELFAllocator;
93
    SpecificBumpPtrAllocator<MCSectionMachO> MachOAllocator;
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    SpecificBumpPtrAllocator<MCSectionWasm> WasmAllocator;
95
96
    /// Bindings of names to symbols.
97
    SymbolTable Symbols;
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    /// A mapping from a local label number and an instance count to a symbol.
100
    /// For example, in the assembly
101
    ///     1:
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    ///     2:
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    ///     1:
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    /// We have three labels represented by the pairs (1, 0), (2, 0) and (1, 1)
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    DenseMap<std::pair<unsigned, unsigned>, MCSymbol *> LocalSymbols;
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    /// Keeps tracks of names that were used both for used declared and
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    /// artificial symbols. The value is "true" if the name has been used for a
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    /// non-section symbol (there can be at most one of those, plus an unlimited
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    /// number of section symbols with the same name).
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    StringMap<bool, BumpPtrAllocator &> UsedNames;
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    /// The next ID to dole out to an unnamed assembler temporary symbol with
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    /// a given prefix.
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    StringMap<unsigned> NextID;
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    /// Instances of directional local labels.
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    DenseMap<unsigned, MCLabel *> Instances;
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    /// NextInstance() creates the next instance of the directional local label
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    /// for the LocalLabelVal and adds it to the map if needed.
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    unsigned NextInstance(unsigned LocalLabelVal);
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    /// GetInstance() gets the current instance of the directional local label
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    /// for the LocalLabelVal and adds it to the map if needed.
124
    unsigned GetInstance(unsigned LocalLabelVal);
125
126
    /// The file name of the log file from the environment variable
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    /// AS_SECURE_LOG_FILE.  Which must be set before the .secure_log_unique
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    /// directive is used or it is an error.
129
    char *SecureLogFile;
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    /// The stream that gets written to for the .secure_log_unique directive.
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    std::unique_ptr<raw_fd_ostream> SecureLog;
132
    /// Boolean toggled when .secure_log_unique / .secure_log_reset is seen to
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    /// catch errors if .secure_log_unique appears twice without
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    /// .secure_log_reset appearing between them.
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    bool SecureLogUsed = false;
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    /// The compilation directory to use for DW_AT_comp_dir.
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    SmallString<128> CompilationDir;
139
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    /// Prefix replacement map for source file information.
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    std::map<const std::string, const std::string> DebugPrefixMap;
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    /// The main file name if passed in explicitly.
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    std::string MainFileName;
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    /// The dwarf file and directory tables from the dwarf .file directive.
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    /// We now emit a line table for each compile unit. To reduce the prologue
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    /// size of each line table, the files and directories used by each compile
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    /// unit are separated.
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    std::map<unsigned, MCDwarfLineTable> MCDwarfLineTablesCUMap;
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    /// The current dwarf line information from the last dwarf .loc directive.
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    MCDwarfLoc CurrentDwarfLoc;
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    bool DwarfLocSeen = false;
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    /// Generate dwarf debugging info for assembly source files.
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    bool GenDwarfForAssembly = false;
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    /// The current dwarf file number when generate dwarf debugging info for
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    /// assembly source files.
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    unsigned GenDwarfFileNumber = 0;
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    /// Sections for generating the .debug_ranges and .debug_aranges sections.
164
    SetVector<MCSection *> SectionsForRanges;
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    /// The information gathered from labels that will have dwarf label
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    /// entries when generating dwarf assembly source files.
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    std::vector<MCGenDwarfLabelEntry> MCGenDwarfLabelEntries;
169
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    /// The string to embed in the debug information for the compile unit, if
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    /// non-empty.
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    StringRef DwarfDebugFlags;
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    /// The string to embed in as the dwarf AT_producer for the compile unit, if
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    /// non-empty.
176
    StringRef DwarfDebugProducer;
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    /// The maximum version of dwarf that we should emit.
179
    uint16_t DwarfVersion = 4;
180
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    /// Honor temporary labels, this is useful for debugging semantic
182
    /// differences between temporary and non-temporary labels (primarily on
183
    /// Darwin).
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    bool AllowTemporaryLabels = true;
185
    bool UseNamesOnTempLabels = true;
186
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    /// The Compile Unit ID that we are currently processing.
188
    unsigned DwarfCompileUnitID = 0;
189
190
    struct ELFSectionKey {
191
      std::string SectionName;
192
      StringRef GroupName;
193
      unsigned UniqueID;
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195
      ELFSectionKey(StringRef SectionName, StringRef GroupName,
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                    unsigned UniqueID)
197
1.99M
          : SectionName(SectionName), GroupName(GroupName), UniqueID(UniqueID) {
198
1.99M
      }
199
200
20.6M
      bool operator<(const ELFSectionKey &Other) const {
201
20.6M
        if (SectionName != Other.SectionName)
202
20.1M
          return SectionName < Other.SectionName;
203
474k
        if (GroupName != Other.GroupName)
204
123
          return GroupName < Other.GroupName;
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473k
        return UniqueID < Other.UniqueID;
206
473k
      }
207
    };
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    struct COFFSectionKey {
210
      std::string SectionName;
211
      StringRef GroupName;
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      int SelectionKey;
213
      unsigned UniqueID;
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215
      COFFSectionKey(StringRef SectionName, StringRef GroupName,
216
                     int SelectionKey, unsigned UniqueID)
217
          : SectionName(SectionName), GroupName(GroupName),
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52.6k
            SelectionKey(SelectionKey), UniqueID(UniqueID) {}
219
220
400k
      bool operator<(const COFFSectionKey &Other) const {
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400k
        if (SectionName != Other.SectionName)
222
396k
          return SectionName < Other.SectionName;
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4.04k
        if (GroupName != Other.GroupName)
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2.83k
          return GroupName < Other.GroupName;
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1.21k
        if (SelectionKey != Other.SelectionKey)
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13
          return SelectionKey < Other.SelectionKey;
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1.20k
        return UniqueID < Other.UniqueID;
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1.20k
      }
229
    };
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    struct WasmSectionKey {
232
      std::string SectionName;
233
      StringRef GroupName;
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      unsigned UniqueID;
235
236
      WasmSectionKey(StringRef SectionName, StringRef GroupName,
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                     unsigned UniqueID)
238
9.93k
          : SectionName(SectionName), GroupName(GroupName), UniqueID(UniqueID) {
239
9.93k
      }
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70.4k
      bool operator<(const WasmSectionKey &Other) const {
242
70.4k
        if (SectionName != Other.SectionName)
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70.4k
          return SectionName < Other.SectionName;
244
21
        if (GroupName != Other.GroupName)
245
0
          return GroupName < Other.GroupName;
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21
        return UniqueID < Other.UniqueID;
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      }
248
    };
249
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    StringMap<MCSectionMachO *> MachOUniquingMap;
251
    std::map<ELFSectionKey, MCSectionELF *> ELFUniquingMap;
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    std::map<COFFSectionKey, MCSectionCOFF *> COFFUniquingMap;
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    std::map<WasmSectionKey, MCSectionWasm *> WasmUniquingMap;
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    StringMap<bool> RelSecNames;
255
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    SpecificBumpPtrAllocator<MCSubtargetInfo> MCSubtargetAllocator;
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    /// Do automatic reset in destructor
259
    bool AutoReset;
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261
    bool HadError = false;
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    MCSymbol *createSymbolImpl(const StringMapEntry<bool> *Name,
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                               bool CanBeUnnamed);
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    MCSymbol *createSymbol(StringRef Name, bool AlwaysAddSuffix,
266
                           bool IsTemporary);
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    MCSymbol *getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal,
269
                                                unsigned Instance);
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    MCSectionELF *createELFSectionImpl(StringRef Section, unsigned Type,
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                                       unsigned Flags, SectionKind K,
273
                                       unsigned EntrySize,
274
                                       const MCSymbolELF *Group,
275
                                       unsigned UniqueID,
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                                       const MCSymbolELF *Associated);
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    /// Map of currently defined macros.
279
    StringMap<MCAsmMacro> MacroMap;
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  public:
282
    explicit MCContext(const MCAsmInfo *MAI, const MCRegisterInfo *MRI,
283
                       const MCObjectFileInfo *MOFI,
284
                       const SourceMgr *Mgr = nullptr, bool DoAutoReset = true);
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    MCContext(const MCContext &) = delete;
286
    MCContext &operator=(const MCContext &) = delete;
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    ~MCContext();
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17
    const SourceMgr *getSourceManager() const { return SrcMgr; }
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1.67k
    void setInlineSourceManager(SourceMgr *SM) { InlineSrcMgr = SM; }
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27.3M
    const MCAsmInfo *getAsmInfo() const { return MAI; }
294
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35.1M
    const MCRegisterInfo *getRegisterInfo() const { return MRI; }
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391k
    const MCObjectFileInfo *getObjectFileInfo() const { return MOFI; }
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    CodeViewContext &getCVContext();
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4
    void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; }
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18.1k
    void setUseNamesOnTempLabels(bool Value) { UseNamesOnTempLabels = Value; }
303
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    /// \name Module Lifetime Management
305
    /// @{
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307
    /// reset - return object to right after construction state to prepare
308
    /// to process a new module
309
    void reset();
310
311
    /// @}
312
313
    /// \name Symbol Management
314
    /// @{
315
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    /// Create and return a new linker temporary symbol with a unique but
317
    /// unspecified name.
318
    MCSymbol *createLinkerPrivateTempSymbol();
319
320
    /// Create and return a new assembler temporary symbol with a unique but
321
    /// unspecified name.
322
    MCSymbol *createTempSymbol(bool CanBeUnnamed = true);
323
324
    MCSymbol *createTempSymbol(const Twine &Name, bool AlwaysAddSuffix,
325
                               bool CanBeUnnamed = true);
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327
    /// Create the definition of a directional local symbol for numbered label
328
    /// (used for "1:" definitions).
329
    MCSymbol *createDirectionalLocalSymbol(unsigned LocalLabelVal);
330
331
    /// Create and return a directional local symbol for numbered label (used
332
    /// for "1b" or 1f" references).
333
    MCSymbol *getDirectionalLocalSymbol(unsigned LocalLabelVal, bool Before);
334
335
    /// Lookup the symbol inside with the specified \p Name.  If it exists,
336
    /// return it.  If not, create a forward reference and return it.
337
    ///
338
    /// \param Name - The symbol name, which must be unique across all symbols.
339
    MCSymbol *getOrCreateSymbol(const Twine &Name);
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341
    /// Gets a symbol that will be defined to the final stack offset of a local
342
    /// variable after codegen.
343
    ///
344
    /// \param Idx - The index of a local variable passed to \@llvm.localescape.
345
    MCSymbol *getOrCreateFrameAllocSymbol(StringRef FuncName, unsigned Idx);
346
347
    MCSymbol *getOrCreateParentFrameOffsetSymbol(StringRef FuncName);
348
349
    MCSymbol *getOrCreateLSDASymbol(StringRef FuncName);
350
351
    /// Get the symbol for \p Name, or null.
352
    MCSymbol *lookupSymbol(const Twine &Name) const;
353
354
    /// Set value for a symbol.
355
    void setSymbolValue(MCStreamer &Streamer, StringRef Sym, uint64_t Val);
356
357
    /// getSymbols - Get a reference for the symbol table for clients that
358
    /// want to, for example, iterate over all symbols. 'const' because we
359
    /// still want any modifications to the table itself to use the MCContext
360
    /// APIs.
361
1.52k
    const SymbolTable &getSymbols() const { return Symbols; }
362
363
    /// @}
364
365
    /// \name Section Management
366
    /// @{
367
368
    enum : unsigned {
369
      /// Pass this value as the UniqueID during section creation to get the
370
      /// generic section with the given name and characteristics. The usual
371
      /// sections such as .text use this ID.
372
      GenericSectionID = ~0U
373
    };
374
375
    /// Return the MCSection for the specified mach-o section.  This requires
376
    /// the operands to be valid.
377
    MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
378
                                    unsigned TypeAndAttributes,
379
                                    unsigned Reserved2, SectionKind K,
380
                                    const char *BeginSymName = nullptr);
381
382
    MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
383
                                    unsigned TypeAndAttributes, SectionKind K,
384
879k
                                    const char *BeginSymName = nullptr) {
385
879k
      return getMachOSection(Segment, Section, TypeAndAttributes, 0, K,
386
879k
                             BeginSymName);
387
879k
    }
388
389
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
390
1.22M
                                unsigned Flags) {
391
1.22M
      return getELFSection(Section, Type, Flags, 0, "");
392
1.22M
    }
393
394
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
395
                                unsigned Flags, unsigned EntrySize,
396
1.41M
                                const Twine &Group) {
397
1.41M
      return getELFSection(Section, Type, Flags, EntrySize, Group, ~0);
398
1.41M
    }
399
400
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
401
                                unsigned Flags, unsigned EntrySize,
402
1.41M
                                const Twine &Group, unsigned UniqueID) {
403
1.41M
      return getELFSection(Section, Type, Flags, EntrySize, Group, UniqueID,
404
1.41M
                           nullptr);
405
1.41M
    }
406
407
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
408
                                unsigned Flags, unsigned EntrySize,
409
                                const Twine &Group, unsigned UniqueID,
410
                                const MCSymbolELF *Associated);
411
412
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
413
                                unsigned Flags, unsigned EntrySize,
414
                                const MCSymbolELF *Group, unsigned UniqueID,
415
                                const MCSymbolELF *Associated);
416
417
    /// Get a section with the provided group identifier. This section is
418
    /// named by concatenating \p Prefix with '.' then \p Suffix. The \p Type
419
    /// describes the type of the section and \p Flags are used to further
420
    /// configure this named section.
421
    MCSectionELF *getELFNamedSection(const Twine &Prefix, const Twine &Suffix,
422
                                     unsigned Type, unsigned Flags,
423
                                     unsigned EntrySize = 0);
424
425
    MCSectionELF *createELFRelSection(const Twine &Name, unsigned Type,
426
                                      unsigned Flags, unsigned EntrySize,
427
                                      const MCSymbolELF *Group,
428
                                      const MCSectionELF *RelInfoSection);
429
430
    void renameELFSection(MCSectionELF *Section, StringRef Name);
431
432
    MCSectionELF *createELFGroupSection(const MCSymbolELF *Group);
433
434
    MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
435
                                  SectionKind Kind, StringRef COMDATSymName,
436
                                  int Selection,
437
                                  unsigned UniqueID = GenericSectionID,
438
                                  const char *BeginSymName = nullptr);
439
440
    MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
441
                                  SectionKind Kind,
442
                                  const char *BeginSymName = nullptr);
443
444
    MCSectionCOFF *getCOFFSection(StringRef Section);
445
446
    /// Gets or creates a section equivalent to Sec that is associated with the
447
    /// section containing KeySym. For example, to create a debug info section
448
    /// associated with an inline function, pass the normal debug info section
449
    /// as Sec and the function symbol as KeySym.
450
    MCSectionCOFF *
451
    getAssociativeCOFFSection(MCSectionCOFF *Sec, const MCSymbol *KeySym,
452
                              unsigned UniqueID = GenericSectionID);
453
454
6.21k
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K) {
455
6.21k
      return getWasmSection(Section, K, nullptr);
456
6.21k
    }
457
458
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
459
6.21k
                                  const char *BeginSymName) {
460
6.21k
      return getWasmSection(Section, K, "", ~0, BeginSymName);
461
6.21k
    }
462
463
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
464
3.72k
                                  const Twine &Group, unsigned UniqueID) {
465
3.72k
      return getWasmSection(Section, K, Group, UniqueID, nullptr);
466
3.72k
    }
467
468
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
469
                                  const Twine &Group, unsigned UniqueID,
470
                                  const char *BeginSymName);
471
472
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
473
                                  const MCSymbolWasm *Group, unsigned UniqueID,
474
                                  const char *BeginSymName);
475
476
    // Create and save a copy of STI and return a reference to the copy.
477
    MCSubtargetInfo &getSubtargetCopy(const MCSubtargetInfo &STI);
478
479
    /// @}
480
481
    /// \name Dwarf Management
482
    /// @{
483
484
    /// Get the compilation directory for DW_AT_comp_dir
485
    /// The compilation directory should be set with \c setCompilationDir before
486
    /// calling this function. If it is unset, an empty string will be returned.
487
191
    StringRef getCompilationDir() const { return CompilationDir; }
488
489
    /// Set the compilation directory for DW_AT_comp_dir
490
8.79k
    void setCompilationDir(StringRef S) { CompilationDir = S.str(); }
491
492
    /// Get the debug prefix map.
493
    const std::map<const std::string, const std::string> &
494
0
    getDebugPrefixMap() const {
495
0
      return DebugPrefixMap;
496
0
    }
497
498
    /// Add an entry to the debug prefix map.
499
    void addDebugPrefixMapEntry(const std::string &From, const std::string &To);
500
501
    // Remaps all debug directory paths in-place as per the debug prefix map.
502
    void RemapDebugPaths();
503
504
    /// Get the main file name for use in error messages and debug
505
    /// info. This can be set to ensure we've got the correct file name
506
    /// after preprocessing or for -save-temps.
507
48
    const std::string &getMainFileName() const { return MainFileName; }
508
509
    /// Set the main file name and override the default.
510
761
    void setMainFileName(StringRef S) { MainFileName = S; }
511
512
    /// Creates an entry in the dwarf file and directory tables.
513
    Expected<unsigned> getDwarfFile(StringRef Directory, StringRef FileName,
514
                                    unsigned FileNumber,
515
                                    MD5::MD5Result *Checksum,
516
                                    Optional<StringRef> Source, unsigned CUID);
517
518
    bool isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID = 0);
519
520
58.8k
    const std::map<unsigned, MCDwarfLineTable> &getMCDwarfLineTables() const {
521
58.8k
      return MCDwarfLineTablesCUMap;
522
58.8k
    }
523
524
1.07M
    MCDwarfLineTable &getMCDwarfLineTable(unsigned CUID) {
525
1.07M
      return MCDwarfLineTablesCUMap[CUID];
526
1.07M
    }
527
528
138
    const MCDwarfLineTable &getMCDwarfLineTable(unsigned CUID) const {
529
138
      auto I = MCDwarfLineTablesCUMap.find(CUID);
530
138
      assert(I != MCDwarfLineTablesCUMap.end());
531
138
      return I->second;
532
138
    }
533
534
46
    const SmallVectorImpl<MCDwarfFile> &getMCDwarfFiles(unsigned CUID = 0) {
535
46
      return getMCDwarfLineTable(CUID).getMCDwarfFiles();
536
46
    }
537
538
46
    const SmallVectorImpl<std::string> &getMCDwarfDirs(unsigned CUID = 0) {
539
46
      return getMCDwarfLineTable(CUID).getMCDwarfDirs();
540
46
    }
541
542
0
    bool hasMCLineSections() const {
543
0
      for (const auto &Table : MCDwarfLineTablesCUMap)
544
0
        if (!Table.second.getMCDwarfFiles().empty() || Table.second.getLabel())
545
0
          return true;
546
0
      return false;
547
0
    }
548
549
2.12M
    unsigned getDwarfCompileUnitID() { return DwarfCompileUnitID; }
550
551
72.6k
    void setDwarfCompileUnitID(unsigned CUIndex) {
552
72.6k
      DwarfCompileUnitID = CUIndex;
553
72.6k
    }
554
555
    /// Specifies the "root" file and directory of the compilation unit.
556
    /// These are "file 0" and "directory 0" in DWARF v5.
557
    void setMCLineTableRootFile(unsigned CUID, StringRef CompilationDir,
558
                                StringRef Filename, MD5::MD5Result *Checksum,
559
2.29k
                                Optional<StringRef> Source) {
560
2.29k
      getMCDwarfLineTable(CUID).setRootFile(CompilationDir, Filename, Checksum,
561
2.29k
                                            Source);
562
2.29k
    }
563
564
    /// Reports whether MD5 checksum usage is consistent (all-or-none).
565
138
    bool isDwarfMD5UsageConsistent(unsigned CUID) const {
566
138
      return getMCDwarfLineTable(CUID).isMD5UsageConsistent();
567
138
    }
568
569
    /// Saves the information from the currently parsed dwarf .loc directive
570
    /// and sets DwarfLocSeen.  When the next instruction is assembled an entry
571
    /// in the line number table with this information and the address of the
572
    /// instruction will be created.
573
    void setCurrentDwarfLoc(unsigned FileNum, unsigned Line, unsigned Column,
574
                            unsigned Flags, unsigned Isa,
575
1.06M
                            unsigned Discriminator) {
576
1.06M
      CurrentDwarfLoc.setFileNum(FileNum);
577
1.06M
      CurrentDwarfLoc.setLine(Line);
578
1.06M
      CurrentDwarfLoc.setColumn(Column);
579
1.06M
      CurrentDwarfLoc.setFlags(Flags);
580
1.06M
      CurrentDwarfLoc.setIsa(Isa);
581
1.06M
      CurrentDwarfLoc.setDiscriminator(Discriminator);
582
1.06M
      DwarfLocSeen = true;
583
1.06M
    }
584
585
1.64M
    void clearDwarfLocSeen() { DwarfLocSeen = false; }
586
587
29.3M
    bool getDwarfLocSeen() { return DwarfLocSeen; }
588
3.58M
    const MCDwarfLoc &getCurrentDwarfLoc() { return CurrentDwarfLoc; }
589
590
946k
    bool getGenDwarfForAssembly() { return GenDwarfForAssembly; }
591
8.06k
    void setGenDwarfForAssembly(bool Value) { GenDwarfForAssembly = Value; }
592
2.79k
    unsigned getGenDwarfFileNumber() { return GenDwarfFileNumber; }
593
594
1.27k
    void setGenDwarfFileNumber(unsigned FileNumber) {
595
1.27k
      GenDwarfFileNumber = FileNumber;
596
1.27k
    }
597
598
1.64k
    const SetVector<MCSection *> &getGenDwarfSectionSyms() {
599
1.64k
      return SectionsForRanges;
600
1.64k
    }
601
602
71
    bool addGenDwarfSection(MCSection *Sec) {
603
71
      return SectionsForRanges.insert(Sec);
604
71
    }
605
606
    void finalizeDwarfSections(MCStreamer &MCOS);
607
608
46
    const std::vector<MCGenDwarfLabelEntry> &getMCGenDwarfLabelEntries() const {
609
46
      return MCGenDwarfLabelEntries;
610
46
    }
611
612
112
    void addMCGenDwarfLabelEntry(const MCGenDwarfLabelEntry &E) {
613
112
      MCGenDwarfLabelEntries.push_back(E);
614
112
    }
615
616
0
    void setDwarfDebugFlags(StringRef S) { DwarfDebugFlags = S; }
617
92
    StringRef getDwarfDebugFlags() { return DwarfDebugFlags; }
618
619
758
    void setDwarfDebugProducer(StringRef S) { DwarfDebugProducer = S; }
620
46
    StringRef getDwarfDebugProducer() { return DwarfDebugProducer; }
621
622
1.46M
    dwarf::DwarfFormat getDwarfFormat() const {
623
1.46M
      // TODO: Support DWARF64
624
1.46M
      return dwarf::DWARF32;
625
1.46M
    }
626
627
42.7k
    void setDwarfVersion(uint16_t v) { DwarfVersion = v; }
628
5.01M
    uint16_t getDwarfVersion() const { return DwarfVersion; }
629
630
    /// @}
631
632
2
    char *getSecureLogFile() { return SecureLogFile; }
633
2
    raw_fd_ostream *getSecureLog() { return SecureLog.get(); }
634
635
2
    void setSecureLog(std::unique_ptr<raw_fd_ostream> Value) {
636
2
      SecureLog = std::move(Value);
637
2
    }
638
639
2
    bool getSecureLogUsed() { return SecureLogUsed; }
640
2
    void setSecureLogUsed(bool Value) { SecureLogUsed = Value; }
641
642
25.7M
    void *allocate(unsigned Size, unsigned Align = 8) {
643
25.7M
      return Allocator.Allocate(Size, Align);
644
25.7M
    }
645
646
0
    void deallocate(void *Ptr) {}
647
648
20.1k
    bool hadError() { return HadError; }
649
    void reportError(SMLoc L, const Twine &Msg);
650
    // Unrecoverable error has occurred. Display the best diagnostic we can
651
    // and bail via exit(1). For now, most MC backend errors are unrecoverable.
652
    // FIXME: We should really do something about that.
653
    LLVM_ATTRIBUTE_NORETURN void reportFatalError(SMLoc L,
654
                                                  const Twine &Msg);
655
656
1.34M
    const MCAsmMacro *lookupMacro(StringRef Name) {
657
1.34M
      StringMap<MCAsmMacro>::iterator I = MacroMap.find(Name);
658
1.34M
      return (I == MacroMap.end()) ? 
nullptr1.15M
:
&I->getValue()197k
;
659
1.34M
    }
660
661
239
    void defineMacro(StringRef Name, MCAsmMacro Macro) {
662
239
      MacroMap.insert(std::make_pair(Name, std::move(Macro)));
663
239
    }
664
665
4
    void undefineMacro(StringRef Name) { MacroMap.erase(Name); }
666
  };
667
668
} // end namespace llvm
669
670
// operator new and delete aren't allowed inside namespaces.
671
// The throw specifications are mandated by the standard.
672
/// Placement new for using the MCContext's allocator.
673
///
674
/// This placement form of operator new uses the MCContext's allocator for
675
/// obtaining memory. It is a non-throwing new, which means that it returns
676
/// null on error. (If that is what the allocator does. The current does, so if
677
/// this ever changes, this operator will have to be changed, too.)
678
/// Usage looks like this (assuming there's an MCContext 'Context' in scope):
679
/// \code
680
/// // Default alignment (8)
681
/// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments);
682
/// // Specific alignment
683
/// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments);
684
/// \endcode
685
/// Please note that you cannot use delete on the pointer; it must be
686
/// deallocated using an explicit destructor call followed by
687
/// \c Context.Deallocate(Ptr).
688
///
689
/// \param Bytes The number of bytes to allocate. Calculated by the compiler.
690
/// \param C The MCContext that provides the allocator.
691
/// \param Alignment The alignment of the allocated memory (if the underlying
692
///                  allocator supports it).
693
/// \return The allocated memory. Could be NULL.
694
inline void *operator new(size_t Bytes, llvm::MCContext &C,
695
16.5M
                          size_t Alignment = 8) noexcept {
696
16.5M
  return C.allocate(Bytes, Alignment);
697
16.5M
}
698
/// Placement delete companion to the new above.
699
///
700
/// This operator is just a companion to the new above. There is no way of
701
/// invoking it directly; see the new operator for more details. This operator
702
/// is called implicitly by the compiler if a placement new expression using
703
/// the MCContext throws in the object constructor.
704
0
inline void operator delete(void *Ptr, llvm::MCContext &C, size_t) noexcept {
705
0
  C.deallocate(Ptr);
706
0
}
707
708
/// This placement form of operator new[] uses the MCContext's allocator for
709
/// obtaining memory. It is a non-throwing new[], which means that it returns
710
/// null on error.
711
/// Usage looks like this (assuming there's an MCContext 'Context' in scope):
712
/// \code
713
/// // Default alignment (8)
714
/// char *data = new (Context) char[10];
715
/// // Specific alignment
716
/// char *data = new (Context, 4) char[10];
717
/// \endcode
718
/// Please note that you cannot use delete on the pointer; it must be
719
/// deallocated using an explicit destructor call followed by
720
/// \c Context.Deallocate(Ptr).
721
///
722
/// \param Bytes The number of bytes to allocate. Calculated by the compiler.
723
/// \param C The MCContext that provides the allocator.
724
/// \param Alignment The alignment of the allocated memory (if the underlying
725
///                  allocator supports it).
726
/// \return The allocated memory. Could be NULL.
727
inline void *operator new[](size_t Bytes, llvm::MCContext &C,
728
0
                            size_t Alignment = 8) noexcept {
729
0
  return C.allocate(Bytes, Alignment);
730
0
}
731
732
/// Placement delete[] companion to the new[] above.
733
///
734
/// This operator is just a companion to the new[] above. There is no way of
735
/// invoking it directly; see the new[] operator for more details. This operator
736
/// is called implicitly by the compiler if a placement new[] expression using
737
/// the MCContext throws in the object constructor.
738
0
inline void operator delete[](void *Ptr, llvm::MCContext &C) noexcept {
739
0
  C.deallocate(Ptr);
740
0
}
741
742
#endif // LLVM_MC_MCCONTEXT_H