Coverage Report

Created: 2018-07-18 22:01

/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 {
42
43
  class CodeViewContext;
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  class MCAsmInfo;
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  class MCLabel;
46
  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;
55
  class MCSymbolELF;
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  class MCSymbolWasm;
57
  class SMLoc;
58
  class SourceMgr;
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60
  /// Context object for machine code objects.  This class owns all of the
61
  /// sections that it creates.
62
  ///
63
  class MCContext {
64
  public:
65
    using SymbolTable = StringMap<MCSymbol *, BumpPtrAllocator &>;
66
67
  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
74
    /// The MCAsmInfo for this target.
75
    const MCAsmInfo *MAI;
76
77
    /// 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.
86
    ///
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;
94
    SpecificBumpPtrAllocator<MCSectionWasm> WasmAllocator;
95
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    /// 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
110
    /// 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
114
    /// 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.
121
    unsigned NextInstance(unsigned LocalLabelVal);
122
    /// GetInstance() gets the current instance of the directional local label
123
    /// for the LocalLabelVal and adds it to the map if needed.
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    unsigned GetInstance(unsigned LocalLabelVal);
125
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    /// 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.
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    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
134
    /// .secure_log_reset appearing between them.
135
    bool SecureLogUsed = false;
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    /// The compilation directory to use for DW_AT_comp_dir.
138
    SmallString<128> CompilationDir;
139
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    /// Prefix replacement map for source file information.
141
    std::map<const std::string, const std::string> DebugPrefixMap;
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    /// The main file name if passed in explicitly.
144
    std::string MainFileName;
145
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    /// The dwarf file and directory tables from the dwarf .file directive.
147
    /// 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;
155
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    /// Generate dwarf debugging info for assembly source files.
157
    bool GenDwarfForAssembly = false;
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    /// The current dwarf file number when generate dwarf debugging info for
160
    /// assembly source files.
161
    unsigned GenDwarfFileNumber = 0;
162
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    /// Sections for generating the .debug_ranges and .debug_aranges sections.
164
    SetVector<MCSection *> SectionsForRanges;
165
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    /// The information gathered from labels that will have dwarf label
167
    /// 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
171
    /// non-empty.
172
    StringRef DwarfDebugFlags;
173
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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;
194
195
      ELFSectionKey(StringRef SectionName, StringRef GroupName,
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                    unsigned UniqueID)
197
1.84M
          : SectionName(SectionName), GroupName(GroupName), UniqueID(UniqueID) {
198
1.84M
      }
199
200
19.5M
      bool operator<(const ELFSectionKey &Other) const {
201
19.5M
        if (SectionName != Other.SectionName)
202
19.0M
          return SectionName < Other.SectionName;
203
434k
        if (GroupName != Other.GroupName)
204
112
          return GroupName < Other.GroupName;
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434k
        return UniqueID < Other.UniqueID;
206
434k
      }
207
    };
208
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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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47.0k
            SelectionKey(SelectionKey), UniqueID(UniqueID) {}
219
220
357k
      bool operator<(const COFFSectionKey &Other) const {
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357k
        if (SectionName != Other.SectionName)
222
353k
          return SectionName < Other.SectionName;
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3.74k
        if (GroupName != Other.GroupName)
224
2.72k
          return GroupName < Other.GroupName;
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1.02k
        if (SelectionKey != Other.SelectionKey)
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13
          return SelectionKey < Other.SelectionKey;
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1.00k
        return UniqueID < Other.UniqueID;
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1.00k
      }
229
    };
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    struct WasmSectionKey {
232
      std::string SectionName;
233
      StringRef GroupName;
234
      unsigned UniqueID;
235
236
      WasmSectionKey(StringRef SectionName, StringRef GroupName,
237
                     unsigned UniqueID)
238
0
          : SectionName(SectionName), GroupName(GroupName), UniqueID(UniqueID) {
239
0
      }
240
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0
      bool operator<(const WasmSectionKey &Other) const {
242
0
        if (SectionName != Other.SectionName)
243
0
          return SectionName < Other.SectionName;
244
0
        if (GroupName != Other.GroupName)
245
0
          return GroupName < Other.GroupName;
246
0
        return UniqueID < Other.UniqueID;
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0
      }
248
    };
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    StringMap<MCSectionMachO *> MachOUniquingMap;
251
    std::map<ELFSectionKey, MCSectionELF *> ELFUniquingMap;
252
    std::map<COFFSectionKey, MCSectionCOFF *> COFFUniquingMap;
253
    std::map<WasmSectionKey, MCSectionWasm *> WasmUniquingMap;
254
    StringMap<bool> RelSecNames;
255
256
    SpecificBumpPtrAllocator<MCSubtargetInfo> MCSubtargetAllocator;
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    /// Do automatic reset in destructor
259
    bool AutoReset;
260
261
    bool HadError = false;
262
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    MCSymbol *createSymbolImpl(const StringMapEntry<bool> *Name,
264
                               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,
272
                                       unsigned Flags, SectionKind K,
273
                                       unsigned EntrySize,
274
                                       const MCSymbolELF *Group,
275
                                       unsigned UniqueID,
276
                                       const MCSymbolELF *Associated);
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    /// Map of currently defined macros.
279
    StringMap<MCAsmMacro> MacroMap;
280
281
  public:
282
    explicit MCContext(const MCAsmInfo *MAI, const MCRegisterInfo *MRI,
283
                       const MCObjectFileInfo *MOFI,
284
                       const SourceMgr *Mgr = nullptr, bool DoAutoReset = true);
285
    MCContext(const MCContext &) = delete;
286
    MCContext &operator=(const MCContext &) = delete;
287
    ~MCContext();
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289
17
    const SourceMgr *getSourceManager() const { return SrcMgr; }
290
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1.61k
    void setInlineSourceManager(SourceMgr *SM) { InlineSrcMgr = SM; }
292
293
26.6M
    const MCAsmInfo *getAsmInfo() const { return MAI; }
294
295
34.4M
    const MCRegisterInfo *getRegisterInfo() const { return MRI; }
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362k
    const MCObjectFileInfo *getObjectFileInfo() const { return MOFI; }
298
299
    CodeViewContext &getCVContext();
300
301
    /// Clear the current cv_loc, if there is one. Avoids lazily creating a
302
    /// CodeViewContext if none is needed.
303
    void clearCVLocSeen();
304
305
4
    void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; }
306
17.4k
    void setUseNamesOnTempLabels(bool Value) { UseNamesOnTempLabels = Value; }
307
308
    /// \name Module Lifetime Management
309
    /// @{
310
311
    /// reset - return object to right after construction state to prepare
312
    /// to process a new module
313
    void reset();
314
315
    /// @}
316
317
    /// \name Symbol Management
318
    /// @{
319
320
    /// Create and return a new linker temporary symbol with a unique but
321
    /// unspecified name.
322
    MCSymbol *createLinkerPrivateTempSymbol();
323
324
    /// Create and return a new assembler temporary symbol with a unique but
325
    /// unspecified name.
326
    MCSymbol *createTempSymbol(bool CanBeUnnamed = true);
327
328
    MCSymbol *createTempSymbol(const Twine &Name, bool AlwaysAddSuffix,
329
                               bool CanBeUnnamed = true);
330
331
    /// Create the definition of a directional local symbol for numbered label
332
    /// (used for "1:" definitions).
333
    MCSymbol *createDirectionalLocalSymbol(unsigned LocalLabelVal);
334
335
    /// Create and return a directional local symbol for numbered label (used
336
    /// for "1b" or 1f" references).
337
    MCSymbol *getDirectionalLocalSymbol(unsigned LocalLabelVal, bool Before);
338
339
    /// Lookup the symbol inside with the specified \p Name.  If it exists,
340
    /// return it.  If not, create a forward reference and return it.
341
    ///
342
    /// \param Name - The symbol name, which must be unique across all symbols.
343
    MCSymbol *getOrCreateSymbol(const Twine &Name);
344
345
    /// Gets a symbol that will be defined to the final stack offset of a local
346
    /// variable after codegen.
347
    ///
348
    /// \param Idx - The index of a local variable passed to \@llvm.localescape.
349
    MCSymbol *getOrCreateFrameAllocSymbol(StringRef FuncName, unsigned Idx);
350
351
    MCSymbol *getOrCreateParentFrameOffsetSymbol(StringRef FuncName);
352
353
    MCSymbol *getOrCreateLSDASymbol(StringRef FuncName);
354
355
    /// Get the symbol for \p Name, or null.
356
    MCSymbol *lookupSymbol(const Twine &Name) const;
357
358
    /// Set value for a symbol.
359
    void setSymbolValue(MCStreamer &Streamer, StringRef Sym, uint64_t Val);
360
361
    /// getSymbols - Get a reference for the symbol table for clients that
362
    /// want to, for example, iterate over all symbols. 'const' because we
363
    /// still want any modifications to the table itself to use the MCContext
364
    /// APIs.
365
1.19k
    const SymbolTable &getSymbols() const { return Symbols; }
366
367
    /// @}
368
369
    /// \name Section Management
370
    /// @{
371
372
    enum : unsigned {
373
      /// Pass this value as the UniqueID during section creation to get the
374
      /// generic section with the given name and characteristics. The usual
375
      /// sections such as .text use this ID.
376
      GenericSectionID = ~0U
377
    };
378
379
    /// Return the MCSection for the specified mach-o section.  This requires
380
    /// the operands to be valid.
381
    MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
382
                                    unsigned TypeAndAttributes,
383
                                    unsigned Reserved2, SectionKind K,
384
                                    const char *BeginSymName = nullptr);
385
386
    MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
387
                                    unsigned TypeAndAttributes, SectionKind K,
388
844k
                                    const char *BeginSymName = nullptr) {
389
844k
      return getMachOSection(Segment, Section, TypeAndAttributes, 0, K,
390
844k
                             BeginSymName);
391
844k
    }
392
393
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
394
1.10M
                                unsigned Flags) {
395
1.10M
      return getELFSection(Section, Type, Flags, 0, "");
396
1.10M
    }
397
398
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
399
                                unsigned Flags, unsigned EntrySize,
400
1.28M
                                const Twine &Group) {
401
1.28M
      return getELFSection(Section, Type, Flags, EntrySize, Group, ~0);
402
1.28M
    }
403
404
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
405
                                unsigned Flags, unsigned EntrySize,
406
1.28M
                                const Twine &Group, unsigned UniqueID) {
407
1.28M
      return getELFSection(Section, Type, Flags, EntrySize, Group, UniqueID,
408
1.28M
                           nullptr);
409
1.28M
    }
410
411
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
412
                                unsigned Flags, unsigned EntrySize,
413
                                const Twine &Group, unsigned UniqueID,
414
                                const MCSymbolELF *Associated);
415
416
    MCSectionELF *getELFSection(const Twine &Section, unsigned Type,
417
                                unsigned Flags, unsigned EntrySize,
418
                                const MCSymbolELF *Group, unsigned UniqueID,
419
                                const MCSymbolELF *Associated);
420
421
    /// Get a section with the provided group identifier. This section is
422
    /// named by concatenating \p Prefix with '.' then \p Suffix. The \p Type
423
    /// describes the type of the section and \p Flags are used to further
424
    /// configure this named section.
425
    MCSectionELF *getELFNamedSection(const Twine &Prefix, const Twine &Suffix,
426
                                     unsigned Type, unsigned Flags,
427
                                     unsigned EntrySize = 0);
428
429
    MCSectionELF *createELFRelSection(const Twine &Name, unsigned Type,
430
                                      unsigned Flags, unsigned EntrySize,
431
                                      const MCSymbolELF *Group,
432
                                      const MCSectionELF *RelInfoSection);
433
434
    void renameELFSection(MCSectionELF *Section, StringRef Name);
435
436
    MCSectionELF *createELFGroupSection(const MCSymbolELF *Group);
437
438
    MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
439
                                  SectionKind Kind, StringRef COMDATSymName,
440
                                  int Selection,
441
                                  unsigned UniqueID = GenericSectionID,
442
                                  const char *BeginSymName = nullptr);
443
444
    MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
445
                                  SectionKind Kind,
446
                                  const char *BeginSymName = nullptr);
447
448
    MCSectionCOFF *getCOFFSection(StringRef Section);
449
450
    /// Gets or creates a section equivalent to Sec that is associated with the
451
    /// section containing KeySym. For example, to create a debug info section
452
    /// associated with an inline function, pass the normal debug info section
453
    /// as Sec and the function symbol as KeySym.
454
    MCSectionCOFF *
455
    getAssociativeCOFFSection(MCSectionCOFF *Sec, const MCSymbol *KeySym,
456
                              unsigned UniqueID = GenericSectionID);
457
458
0
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K) {
459
0
      return getWasmSection(Section, K, nullptr);
460
0
    }
461
462
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
463
0
                                  const char *BeginSymName) {
464
0
      return getWasmSection(Section, K, "", ~0, BeginSymName);
465
0
    }
466
467
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
468
0
                                  const Twine &Group, unsigned UniqueID) {
469
0
      return getWasmSection(Section, K, Group, UniqueID, nullptr);
470
0
    }
471
472
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
473
                                  const Twine &Group, unsigned UniqueID,
474
                                  const char *BeginSymName);
475
476
    MCSectionWasm *getWasmSection(const Twine &Section, SectionKind K,
477
                                  const MCSymbolWasm *Group, unsigned UniqueID,
478
                                  const char *BeginSymName);
479
480
    // Create and save a copy of STI and return a reference to the copy.
481
    MCSubtargetInfo &getSubtargetCopy(const MCSubtargetInfo &STI);
482
483
    /// @}
484
485
    /// \name Dwarf Management
486
    /// @{
487
488
    /// Get the compilation directory for DW_AT_comp_dir
489
    /// The compilation directory should be set with \c setCompilationDir before
490
    /// calling this function. If it is unset, an empty string will be returned.
491
131
    StringRef getCompilationDir() const { return CompilationDir; }
492
493
    /// Set the compilation directory for DW_AT_comp_dir
494
8.13k
    void setCompilationDir(StringRef S) { CompilationDir = S.str(); }
495
496
    /// Get the debug prefix map.
497
    const std::map<const std::string, const std::string> &
498
0
    getDebugPrefixMap() const {
499
0
      return DebugPrefixMap;
500
0
    }
501
502
    /// Add an entry to the debug prefix map.
503
    void addDebugPrefixMapEntry(const std::string &From, const std::string &To);
504
505
    // Remaps all debug directory paths in-place as per the debug prefix map.
506
    void RemapDebugPaths();
507
508
    /// Get the main file name for use in error messages and debug
509
    /// info. This can be set to ensure we've got the correct file name
510
    /// after preprocessing or for -save-temps.
511
38
    const std::string &getMainFileName() const { return MainFileName; }
512
513
    /// Set the main file name and override the default.
514
765
    void setMainFileName(StringRef S) { MainFileName = S; }
515
516
    /// Creates an entry in the dwarf file and directory tables.
517
    Expected<unsigned> getDwarfFile(StringRef Directory, StringRef FileName,
518
                                    unsigned FileNumber,
519
                                    MD5::MD5Result *Checksum,
520
                                    Optional<StringRef> Source, unsigned CUID);
521
522
    bool isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID = 0);
523
524
55.7k
    const std::map<unsigned, MCDwarfLineTable> &getMCDwarfLineTables() const {
525
55.7k
      return MCDwarfLineTablesCUMap;
526
55.7k
    }
527
528
1.06M
    MCDwarfLineTable &getMCDwarfLineTable(unsigned CUID) {
529
1.06M
      return MCDwarfLineTablesCUMap[CUID];
530
1.06M
    }
531
532
131
    const MCDwarfLineTable &getMCDwarfLineTable(unsigned CUID) const {
533
131
      auto I = MCDwarfLineTablesCUMap.find(CUID);
534
131
      assert(I != MCDwarfLineTablesCUMap.end());
535
131
      return I->second;
536
131
    }
537
538
36
    const SmallVectorImpl<MCDwarfFile> &getMCDwarfFiles(unsigned CUID = 0) {
539
36
      return getMCDwarfLineTable(CUID).getMCDwarfFiles();
540
36
    }
541
542
36
    const SmallVectorImpl<std::string> &getMCDwarfDirs(unsigned CUID = 0) {
543
36
      return getMCDwarfLineTable(CUID).getMCDwarfDirs();
544
36
    }
545
546
0
    bool hasMCLineSections() const {
547
0
      for (const auto &Table : MCDwarfLineTablesCUMap)
548
0
        if (!Table.second.getMCDwarfFiles().empty() || Table.second.getLabel())
549
0
          return true;
550
0
      return false;
551
0
    }
552
553
2.11M
    unsigned getDwarfCompileUnitID() { return DwarfCompileUnitID; }
554
555
72.6k
    void setDwarfCompileUnitID(unsigned CUIndex) {
556
72.6k
      DwarfCompileUnitID = CUIndex;
557
72.6k
    }
558
559
    /// Specifies the "root" file and directory of the compilation unit.
560
    /// These are "file 0" and "directory 0" in DWARF v5.
561
    void setMCLineTableRootFile(unsigned CUID, StringRef CompilationDir,
562
                                StringRef Filename, MD5::MD5Result *Checksum,
563
2.24k
                                Optional<StringRef> Source) {
564
2.24k
      getMCDwarfLineTable(CUID).setRootFile(CompilationDir, Filename, Checksum,
565
2.24k
                                            Source);
566
2.24k
    }
567
568
    /// Reports whether MD5 checksum usage is consistent (all-or-none).
569
131
    bool isDwarfMD5UsageConsistent(unsigned CUID) const {
570
131
      return getMCDwarfLineTable(CUID).isMD5UsageConsistent();
571
131
    }
572
573
    /// Saves the information from the currently parsed dwarf .loc directive
574
    /// and sets DwarfLocSeen.  When the next instruction is assembled an entry
575
    /// in the line number table with this information and the address of the
576
    /// instruction will be created.
577
    void setCurrentDwarfLoc(unsigned FileNum, unsigned Line, unsigned Column,
578
                            unsigned Flags, unsigned Isa,
579
1.05M
                            unsigned Discriminator) {
580
1.05M
      CurrentDwarfLoc.setFileNum(FileNum);
581
1.05M
      CurrentDwarfLoc.setLine(Line);
582
1.05M
      CurrentDwarfLoc.setColumn(Column);
583
1.05M
      CurrentDwarfLoc.setFlags(Flags);
584
1.05M
      CurrentDwarfLoc.setIsa(Isa);
585
1.05M
      CurrentDwarfLoc.setDiscriminator(Discriminator);
586
1.05M
      DwarfLocSeen = true;
587
1.05M
    }
588
589
1.62M
    void clearDwarfLocSeen() { DwarfLocSeen = false; }
590
591
28.6M
    bool getDwarfLocSeen() { return DwarfLocSeen; }
592
3.56M
    const MCDwarfLoc &getCurrentDwarfLoc() { return CurrentDwarfLoc; }
593
594
925k
    bool getGenDwarfForAssembly() { return GenDwarfForAssembly; }
595
7.39k
    void setGenDwarfForAssembly(bool Value) { GenDwarfForAssembly = Value; }
596
1.37k
    unsigned getGenDwarfFileNumber() { return GenDwarfFileNumber; }
597
598
600
    void setGenDwarfFileNumber(unsigned FileNumber) {
599
600
      GenDwarfFileNumber = FileNumber;
600
600
    }
601
602
882
    const SetVector<MCSection *> &getGenDwarfSectionSyms() {
603
882
      return SectionsForRanges;
604
882
    }
605
606
63
    bool addGenDwarfSection(MCSection *Sec) {
607
63
      return SectionsForRanges.insert(Sec);
608
63
    }
609
610
    void finalizeDwarfSections(MCStreamer &MCOS);
611
612
36
    const std::vector<MCGenDwarfLabelEntry> &getMCGenDwarfLabelEntries() const {
613
36
      return MCGenDwarfLabelEntries;
614
36
    }
615
616
78
    void addMCGenDwarfLabelEntry(const MCGenDwarfLabelEntry &E) {
617
78
      MCGenDwarfLabelEntries.push_back(E);
618
78
    }
619
620
0
    void setDwarfDebugFlags(StringRef S) { DwarfDebugFlags = S; }
621
72
    StringRef getDwarfDebugFlags() { return DwarfDebugFlags; }
622
623
762
    void setDwarfDebugProducer(StringRef S) { DwarfDebugProducer = S; }
624
36
    StringRef getDwarfDebugProducer() { return DwarfDebugProducer; }
625
626
1.43M
    dwarf::DwarfFormat getDwarfFormat() const {
627
1.43M
      // TODO: Support DWARF64
628
1.43M
      return dwarf::DWARF32;
629
1.43M
    }
630
631
40.6k
    void setDwarfVersion(uint16_t v) { DwarfVersion = v; }
632
4.33M
    uint16_t getDwarfVersion() const { return DwarfVersion; }
633
634
    /// @}
635
636
2
    char *getSecureLogFile() { return SecureLogFile; }
637
2
    raw_fd_ostream *getSecureLog() { return SecureLog.get(); }
638
639
2
    void setSecureLog(std::unique_ptr<raw_fd_ostream> Value) {
640
2
      SecureLog = std::move(Value);
641
2
    }
642
643
2
    bool getSecureLogUsed() { return SecureLogUsed; }
644
2
    void setSecureLogUsed(bool Value) { SecureLogUsed = Value; }
645
646
25.0M
    void *allocate(unsigned Size, unsigned Align = 8) {
647
25.0M
      return Allocator.Allocate(Size, Align);
648
25.0M
    }
649
650
0
    void deallocate(void *Ptr) {}
651
652
19.0k
    bool hadError() { return HadError; }
653
    void reportError(SMLoc L, const Twine &Msg);
654
    // Unrecoverable error has occurred. Display the best diagnostic we can
655
    // and bail via exit(1). For now, most MC backend errors are unrecoverable.
656
    // FIXME: We should really do something about that.
657
    LLVM_ATTRIBUTE_NORETURN void reportFatalError(SMLoc L,
658
                                                  const Twine &Msg);
659
660
1.32M
    const MCAsmMacro *lookupMacro(StringRef Name) {
661
1.32M
      StringMap<MCAsmMacro>::iterator I = MacroMap.find(Name);
662
1.32M
      return (I == MacroMap.end()) ? 
nullptr1.12M
:
&I->getValue()197k
;
663
1.32M
    }
664
665
238
    void defineMacro(StringRef Name, MCAsmMacro Macro) {
666
238
      MacroMap.insert(std::make_pair(Name, std::move(Macro)));
667
238
    }
668
669
4
    void undefineMacro(StringRef Name) { MacroMap.erase(Name); }
670
  };
671
672
} // end namespace llvm
673
674
// operator new and delete aren't allowed inside namespaces.
675
// The throw specifications are mandated by the standard.
676
/// Placement new for using the MCContext's allocator.
677
///
678
/// This placement form of operator new uses the MCContext's allocator for
679
/// obtaining memory. It is a non-throwing new, which means that it returns
680
/// null on error. (If that is what the allocator does. The current does, so if
681
/// this ever changes, this operator will have to be changed, too.)
682
/// Usage looks like this (assuming there's an MCContext 'Context' in scope):
683
/// \code
684
/// // Default alignment (8)
685
/// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments);
686
/// // Specific alignment
687
/// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments);
688
/// \endcode
689
/// Please note that you cannot use delete on the pointer; it must be
690
/// deallocated using an explicit destructor call followed by
691
/// \c Context.Deallocate(Ptr).
692
///
693
/// \param Bytes The number of bytes to allocate. Calculated by the compiler.
694
/// \param C The MCContext that provides the allocator.
695
/// \param Alignment The alignment of the allocated memory (if the underlying
696
///                  allocator supports it).
697
/// \return The allocated memory. Could be NULL.
698
inline void *operator new(size_t Bytes, llvm::MCContext &C,
699
16.1M
                          size_t Alignment = 8) noexcept {
700
16.1M
  return C.allocate(Bytes, Alignment);
701
16.1M
}
702
/// Placement delete companion to the new above.
703
///
704
/// This operator is just a companion to the new above. There is no way of
705
/// invoking it directly; see the new operator for more details. This operator
706
/// is called implicitly by the compiler if a placement new expression using
707
/// the MCContext throws in the object constructor.
708
0
inline void operator delete(void *Ptr, llvm::MCContext &C, size_t) noexcept {
709
0
  C.deallocate(Ptr);
710
0
}
711
712
/// This placement form of operator new[] uses the MCContext's allocator for
713
/// obtaining memory. It is a non-throwing new[], which means that it returns
714
/// null on error.
715
/// Usage looks like this (assuming there's an MCContext 'Context' in scope):
716
/// \code
717
/// // Default alignment (8)
718
/// char *data = new (Context) char[10];
719
/// // Specific alignment
720
/// char *data = new (Context, 4) char[10];
721
/// \endcode
722
/// Please note that you cannot use delete on the pointer; it must be
723
/// deallocated using an explicit destructor call followed by
724
/// \c Context.Deallocate(Ptr).
725
///
726
/// \param Bytes The number of bytes to allocate. Calculated by the compiler.
727
/// \param C The MCContext that provides the allocator.
728
/// \param Alignment The alignment of the allocated memory (if the underlying
729
///                  allocator supports it).
730
/// \return The allocated memory. Could be NULL.
731
inline void *operator new[](size_t Bytes, llvm::MCContext &C,
732
0
                            size_t Alignment = 8) noexcept {
733
0
  return C.allocate(Bytes, Alignment);
734
0
}
735
736
/// Placement delete[] companion to the new[] above.
737
///
738
/// This operator is just a companion to the new[] above. There is no way of
739
/// invoking it directly; see the new[] operator for more details. This operator
740
/// is called implicitly by the compiler if a placement new[] expression using
741
/// the MCContext throws in the object constructor.
742
0
inline void operator delete[](void *Ptr, llvm::MCContext &C) noexcept {
743
0
  C.deallocate(Ptr);
744
0
}
745
746
#endif // LLVM_MC_MCCONTEXT_H