1 //===------------ DebugInfo.h - LLVM C API Debug Info API -----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// This file declares the C API endpoints for generating DWARF Debug Info
10 ///
11 /// Note: This interface is experimental. It is *NOT* stable, and may be
12 ///       changed without warning.
13 ///
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_C_DEBUGINFO_H
17 #define LLVM_C_DEBUGINFO_H
18 
19 #include "llvm-c/Core.h"
20 #include "llvm-c/ExternC.h"
21 
22 LLVM_C_EXTERN_C_BEGIN
23 
24 /**
25  * Debug info flags.
26  */
27 typedef enum {
28   LLVMDIFlagZero = 0,
29   LLVMDIFlagPrivate = 1,
30   LLVMDIFlagProtected = 2,
31   LLVMDIFlagPublic = 3,
32   LLVMDIFlagFwdDecl = 1 << 2,
33   LLVMDIFlagAppleBlock = 1 << 3,
34   LLVMDIFlagReservedBit4 = 1 << 4,
35   LLVMDIFlagVirtual = 1 << 5,
36   LLVMDIFlagArtificial = 1 << 6,
37   LLVMDIFlagExplicit = 1 << 7,
38   LLVMDIFlagPrototyped = 1 << 8,
39   LLVMDIFlagObjcClassComplete = 1 << 9,
40   LLVMDIFlagObjectPointer = 1 << 10,
41   LLVMDIFlagVector = 1 << 11,
42   LLVMDIFlagStaticMember = 1 << 12,
43   LLVMDIFlagLValueReference = 1 << 13,
44   LLVMDIFlagRValueReference = 1 << 14,
45   LLVMDIFlagReserved = 1 << 15,
46   LLVMDIFlagSingleInheritance = 1 << 16,
47   LLVMDIFlagMultipleInheritance = 2 << 16,
48   LLVMDIFlagVirtualInheritance = 3 << 16,
49   LLVMDIFlagIntroducedVirtual = 1 << 18,
50   LLVMDIFlagBitField = 1 << 19,
51   LLVMDIFlagNoReturn = 1 << 20,
52   LLVMDIFlagTypePassByValue = 1 << 22,
53   LLVMDIFlagTypePassByReference = 1 << 23,
54   LLVMDIFlagEnumClass = 1 << 24,
55   LLVMDIFlagFixedEnum = LLVMDIFlagEnumClass, // Deprecated.
56   LLVMDIFlagThunk = 1 << 25,
57   LLVMDIFlagNonTrivial = 1 << 26,
58   LLVMDIFlagBigEndian = 1 << 27,
59   LLVMDIFlagLittleEndian = 1 << 28,
60   LLVMDIFlagIndirectVirtualBase = (1 << 2) | (1 << 5),
61   LLVMDIFlagAccessibility = LLVMDIFlagPrivate | LLVMDIFlagProtected |
62                             LLVMDIFlagPublic,
63   LLVMDIFlagPtrToMemberRep = LLVMDIFlagSingleInheritance |
64                              LLVMDIFlagMultipleInheritance |
65                              LLVMDIFlagVirtualInheritance
66 } LLVMDIFlags;
67 
68 /**
69  * Source languages known by DWARF.
70  */
71 typedef enum {
72   LLVMDWARFSourceLanguageC89,
73   LLVMDWARFSourceLanguageC,
74   LLVMDWARFSourceLanguageAda83,
75   LLVMDWARFSourceLanguageC_plus_plus,
76   LLVMDWARFSourceLanguageCobol74,
77   LLVMDWARFSourceLanguageCobol85,
78   LLVMDWARFSourceLanguageFortran77,
79   LLVMDWARFSourceLanguageFortran90,
80   LLVMDWARFSourceLanguagePascal83,
81   LLVMDWARFSourceLanguageModula2,
82   // New in DWARF v3:
83   LLVMDWARFSourceLanguageJava,
84   LLVMDWARFSourceLanguageC99,
85   LLVMDWARFSourceLanguageAda95,
86   LLVMDWARFSourceLanguageFortran95,
87   LLVMDWARFSourceLanguagePLI,
88   LLVMDWARFSourceLanguageObjC,
89   LLVMDWARFSourceLanguageObjC_plus_plus,
90   LLVMDWARFSourceLanguageUPC,
91   LLVMDWARFSourceLanguageD,
92   // New in DWARF v4:
93   LLVMDWARFSourceLanguagePython,
94   // New in DWARF v5:
95   LLVMDWARFSourceLanguageOpenCL,
96   LLVMDWARFSourceLanguageGo,
97   LLVMDWARFSourceLanguageModula3,
98   LLVMDWARFSourceLanguageHaskell,
99   LLVMDWARFSourceLanguageC_plus_plus_03,
100   LLVMDWARFSourceLanguageC_plus_plus_11,
101   LLVMDWARFSourceLanguageOCaml,
102   LLVMDWARFSourceLanguageRust,
103   LLVMDWARFSourceLanguageC11,
104   LLVMDWARFSourceLanguageSwift,
105   LLVMDWARFSourceLanguageJulia,
106   LLVMDWARFSourceLanguageDylan,
107   LLVMDWARFSourceLanguageC_plus_plus_14,
108   LLVMDWARFSourceLanguageFortran03,
109   LLVMDWARFSourceLanguageFortran08,
110   LLVMDWARFSourceLanguageRenderScript,
111   LLVMDWARFSourceLanguageBLISS,
112   // Vendor extensions:
113   LLVMDWARFSourceLanguageMips_Assembler,
114   LLVMDWARFSourceLanguageGOOGLE_RenderScript,
115   LLVMDWARFSourceLanguageBORLAND_Delphi
116 } LLVMDWARFSourceLanguage;
117 
118 /**
119  * The amount of debug information to emit.
120  */
121 typedef enum {
122     LLVMDWARFEmissionNone = 0,
123     LLVMDWARFEmissionFull,
124     LLVMDWARFEmissionLineTablesOnly
125 } LLVMDWARFEmissionKind;
126 
127 /**
128  * The kind of metadata nodes.
129  */
130 enum {
131   LLVMMDStringMetadataKind,
132   LLVMConstantAsMetadataMetadataKind,
133   LLVMLocalAsMetadataMetadataKind,
134   LLVMDistinctMDOperandPlaceholderMetadataKind,
135   LLVMMDTupleMetadataKind,
136   LLVMDILocationMetadataKind,
137   LLVMDIExpressionMetadataKind,
138   LLVMDIGlobalVariableExpressionMetadataKind,
139   LLVMGenericDINodeMetadataKind,
140   LLVMDISubrangeMetadataKind,
141   LLVMDIEnumeratorMetadataKind,
142   LLVMDIBasicTypeMetadataKind,
143   LLVMDIDerivedTypeMetadataKind,
144   LLVMDICompositeTypeMetadataKind,
145   LLVMDISubroutineTypeMetadataKind,
146   LLVMDIFileMetadataKind,
147   LLVMDICompileUnitMetadataKind,
148   LLVMDISubprogramMetadataKind,
149   LLVMDILexicalBlockMetadataKind,
150   LLVMDILexicalBlockFileMetadataKind,
151   LLVMDINamespaceMetadataKind,
152   LLVMDIModuleMetadataKind,
153   LLVMDITemplateTypeParameterMetadataKind,
154   LLVMDITemplateValueParameterMetadataKind,
155   LLVMDIGlobalVariableMetadataKind,
156   LLVMDILocalVariableMetadataKind,
157   LLVMDILabelMetadataKind,
158   LLVMDIObjCPropertyMetadataKind,
159   LLVMDIImportedEntityMetadataKind,
160   LLVMDIMacroMetadataKind,
161   LLVMDIMacroFileMetadataKind,
162   LLVMDICommonBlockMetadataKind,
163   LLVMDIStringTypeMetadataKind
164 };
165 typedef unsigned LLVMMetadataKind;
166 
167 /**
168  * An LLVM DWARF type encoding.
169  */
170 typedef unsigned LLVMDWARFTypeEncoding;
171 
172 /**
173  * Describes the kind of macro declaration used for LLVMDIBuilderCreateMacro.
174  * @see llvm::dwarf::MacinfoRecordType
175  * @note Values are from DW_MACINFO_* constants in the DWARF specification.
176  */
177 typedef enum {
178   LLVMDWARFMacinfoRecordTypeDefine = 0x01,
179   LLVMDWARFMacinfoRecordTypeMacro = 0x02,
180   LLVMDWARFMacinfoRecordTypeStartFile = 0x03,
181   LLVMDWARFMacinfoRecordTypeEndFile = 0x04,
182   LLVMDWARFMacinfoRecordTypeVendorExt = 0xff
183 } LLVMDWARFMacinfoRecordType;
184 
185 /**
186  * The current debug metadata version number.
187  */
188 unsigned LLVMDebugMetadataVersion(void);
189 
190 /**
191  * The version of debug metadata that's present in the provided \c Module.
192  */
193 unsigned LLVMGetModuleDebugMetadataVersion(LLVMModuleRef Module);
194 
195 /**
196  * Strip debug info in the module if it exists.
197  * To do this, we remove all calls to the debugger intrinsics and any named
198  * metadata for debugging. We also remove debug locations for instructions.
199  * Return true if module is modified.
200  */
201 LLVMBool LLVMStripModuleDebugInfo(LLVMModuleRef Module);
202 
203 /**
204  * Construct a builder for a module, and do not allow for unresolved nodes
205  * attached to the module.
206  */
207 LLVMDIBuilderRef LLVMCreateDIBuilderDisallowUnresolved(LLVMModuleRef M);
208 
209 /**
210  * Construct a builder for a module and collect unresolved nodes attached
211  * to the module in order to resolve cycles during a call to
212  * \c LLVMDIBuilderFinalize.
213  */
214 LLVMDIBuilderRef LLVMCreateDIBuilder(LLVMModuleRef M);
215 
216 /**
217  * Deallocates the \c DIBuilder and everything it owns.
218  * @note You must call \c LLVMDIBuilderFinalize before this
219  */
220 void LLVMDisposeDIBuilder(LLVMDIBuilderRef Builder);
221 
222 /**
223  * Construct any deferred debug info descriptors.
224  */
225 void LLVMDIBuilderFinalize(LLVMDIBuilderRef Builder);
226 
227 /**
228  * A CompileUnit provides an anchor for all debugging
229  * information generated during this instance of compilation.
230  * \param Lang          Source programming language, eg.
231  *                      \c LLVMDWARFSourceLanguageC99
232  * \param FileRef       File info.
233  * \param Producer      Identify the producer of debugging information
234  *                      and code.  Usually this is a compiler
235  *                      version string.
236  * \param ProducerLen   The length of the C string passed to \c Producer.
237  * \param isOptimized   A boolean flag which indicates whether optimization
238  *                      is enabled or not.
239  * \param Flags         This string lists command line options. This
240  *                      string is directly embedded in debug info
241  *                      output which may be used by a tool
242  *                      analyzing generated debugging information.
243  * \param FlagsLen      The length of the C string passed to \c Flags.
244  * \param RuntimeVer    This indicates runtime version for languages like
245  *                      Objective-C.
246  * \param SplitName     The name of the file that we'll split debug info
247  *                      out into.
248  * \param SplitNameLen  The length of the C string passed to \c SplitName.
249  * \param Kind          The kind of debug information to generate.
250  * \param DWOId         The DWOId if this is a split skeleton compile unit.
251  * \param SplitDebugInlining    Whether to emit inline debug info.
252  * \param DebugInfoForProfiling Whether to emit extra debug info for
253  *                              profile collection.
254  * \param SysRoot         The Clang system root (value of -isysroot).
255  * \param SysRootLen      The length of the C string passed to \c SysRoot.
256  * \param SDK           The SDK. On Darwin, the last component of the sysroot.
257  * \param SDKLen        The length of the C string passed to \c SDK.
258  */
259 LLVMMetadataRef LLVMDIBuilderCreateCompileUnit(
260     LLVMDIBuilderRef Builder, LLVMDWARFSourceLanguage Lang,
261     LLVMMetadataRef FileRef, const char *Producer, size_t ProducerLen,
262     LLVMBool isOptimized, const char *Flags, size_t FlagsLen,
263     unsigned RuntimeVer, const char *SplitName, size_t SplitNameLen,
264     LLVMDWARFEmissionKind Kind, unsigned DWOId, LLVMBool SplitDebugInlining,
265     LLVMBool DebugInfoForProfiling, const char *SysRoot, size_t SysRootLen,
266     const char *SDK, size_t SDKLen);
267 
268 /**
269  * Create a file descriptor to hold debugging information for a file.
270  * \param Builder      The \c DIBuilder.
271  * \param Filename     File name.
272  * \param FilenameLen  The length of the C string passed to \c Filename.
273  * \param Directory    Directory.
274  * \param DirectoryLen The length of the C string passed to \c Directory.
275  */
276 LLVMMetadataRef
277 LLVMDIBuilderCreateFile(LLVMDIBuilderRef Builder, const char *Filename,
278                         size_t FilenameLen, const char *Directory,
279                         size_t DirectoryLen);
280 
281 /**
282  * Creates a new descriptor for a module with the specified parent scope.
283  * \param Builder         The \c DIBuilder.
284  * \param ParentScope     The parent scope containing this module declaration.
285  * \param Name            Module name.
286  * \param NameLen         The length of the C string passed to \c Name.
287  * \param ConfigMacros    A space-separated shell-quoted list of -D macro
288                           definitions as they would appear on a command line.
289  * \param ConfigMacrosLen The length of the C string passed to \c ConfigMacros.
290  * \param IncludePath     The path to the module map file.
291  * \param IncludePathLen  The length of the C string passed to \c IncludePath.
292  * \param APINotesFile    The path to an API notes file for the module.
293  * \param APINotesFileLen The length of the C string passed to \c APINotestFile.
294  */
295 LLVMMetadataRef
296 LLVMDIBuilderCreateModule(LLVMDIBuilderRef Builder, LLVMMetadataRef ParentScope,
297                           const char *Name, size_t NameLen,
298                           const char *ConfigMacros, size_t ConfigMacrosLen,
299                           const char *IncludePath, size_t IncludePathLen,
300                           const char *APINotesFile, size_t APINotesFileLen);
301 
302 /**
303  * Creates a new descriptor for a namespace with the specified parent scope.
304  * \param Builder          The \c DIBuilder.
305  * \param ParentScope      The parent scope containing this module declaration.
306  * \param Name             NameSpace name.
307  * \param NameLen          The length of the C string passed to \c Name.
308  * \param ExportSymbols    Whether or not the namespace exports symbols, e.g.
309  *                         this is true of C++ inline namespaces.
310  */
311 LLVMMetadataRef
312 LLVMDIBuilderCreateNameSpace(LLVMDIBuilderRef Builder,
313                              LLVMMetadataRef ParentScope,
314                              const char *Name, size_t NameLen,
315                              LLVMBool ExportSymbols);
316 
317 /**
318  * Create a new descriptor for the specified subprogram.
319  * \param Builder         The \c DIBuilder.
320  * \param Scope           Function scope.
321  * \param Name            Function name.
322  * \param NameLen         Length of enumeration name.
323  * \param LinkageName     Mangled function name.
324  * \param LinkageNameLen  Length of linkage name.
325  * \param File            File where this variable is defined.
326  * \param LineNo          Line number.
327  * \param Ty              Function type.
328  * \param IsLocalToUnit   True if this function is not externally visible.
329  * \param IsDefinition    True if this is a function definition.
330  * \param ScopeLine       Set to the beginning of the scope this starts
331  * \param Flags           E.g.: \c LLVMDIFlagLValueReference. These flags are
332  *                        used to emit dwarf attributes.
333  * \param IsOptimized     True if optimization is ON.
334  */
335 LLVMMetadataRef LLVMDIBuilderCreateFunction(
336     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
337     size_t NameLen, const char *LinkageName, size_t LinkageNameLen,
338     LLVMMetadataRef File, unsigned LineNo, LLVMMetadataRef Ty,
339     LLVMBool IsLocalToUnit, LLVMBool IsDefinition,
340     unsigned ScopeLine, LLVMDIFlags Flags, LLVMBool IsOptimized);
341 
342 /**
343  * Create a descriptor for a lexical block with the specified parent context.
344  * \param Builder      The \c DIBuilder.
345  * \param Scope        Parent lexical block.
346  * \param File         Source file.
347  * \param Line         The line in the source file.
348  * \param Column       The column in the source file.
349  */
350 LLVMMetadataRef LLVMDIBuilderCreateLexicalBlock(
351     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope,
352     LLVMMetadataRef File, unsigned Line, unsigned Column);
353 
354 /**
355  * Create a descriptor for a lexical block with a new file attached.
356  * \param Builder        The \c DIBuilder.
357  * \param Scope          Lexical block.
358  * \param File           Source file.
359  * \param Discriminator  DWARF path discriminator value.
360  */
361 LLVMMetadataRef
362 LLVMDIBuilderCreateLexicalBlockFile(LLVMDIBuilderRef Builder,
363                                     LLVMMetadataRef Scope,
364                                     LLVMMetadataRef File,
365                                     unsigned Discriminator);
366 
367 /**
368  * Create a descriptor for an imported namespace. Suitable for e.g. C++
369  * using declarations.
370  * \param Builder    The \c DIBuilder.
371  * \param Scope      The scope this module is imported into
372  * \param File       File where the declaration is located.
373  * \param Line       Line number of the declaration.
374  */
375 LLVMMetadataRef
376 LLVMDIBuilderCreateImportedModuleFromNamespace(LLVMDIBuilderRef Builder,
377                                                LLVMMetadataRef Scope,
378                                                LLVMMetadataRef NS,
379                                                LLVMMetadataRef File,
380                                                unsigned Line);
381 
382 /**
383  * Create a descriptor for an imported module that aliases another
384  * imported entity descriptor.
385  * \param Builder        The \c DIBuilder.
386  * \param Scope          The scope this module is imported into
387  * \param ImportedEntity Previous imported entity to alias.
388  * \param File           File where the declaration is located.
389  * \param Line           Line number of the declaration.
390  */
391 LLVMMetadataRef
392 LLVMDIBuilderCreateImportedModuleFromAlias(LLVMDIBuilderRef Builder,
393                                            LLVMMetadataRef Scope,
394                                            LLVMMetadataRef ImportedEntity,
395                                            LLVMMetadataRef File,
396                                            unsigned Line);
397 
398 /**
399  * Create a descriptor for an imported module.
400  * \param Builder    The \c DIBuilder.
401  * \param Scope      The scope this module is imported into
402  * \param M          The module being imported here
403  * \param File       File where the declaration is located.
404  * \param Line       Line number of the declaration.
405  */
406 LLVMMetadataRef
407 LLVMDIBuilderCreateImportedModuleFromModule(LLVMDIBuilderRef Builder,
408                                             LLVMMetadataRef Scope,
409                                             LLVMMetadataRef M,
410                                             LLVMMetadataRef File,
411                                             unsigned Line);
412 
413 /**
414  * Create a descriptor for an imported function, type, or variable.  Suitable
415  * for e.g. FORTRAN-style USE declarations.
416  * \param Builder    The DIBuilder.
417  * \param Scope      The scope this module is imported into.
418  * \param Decl       The declaration (or definition) of a function, type,
419                      or variable.
420  * \param File       File where the declaration is located.
421  * \param Line       Line number of the declaration.
422  * \param Name       A name that uniquely identifies this imported declaration.
423  * \param NameLen    The length of the C string passed to \c Name.
424  */
425 LLVMMetadataRef
426 LLVMDIBuilderCreateImportedDeclaration(LLVMDIBuilderRef Builder,
427                                        LLVMMetadataRef Scope,
428                                        LLVMMetadataRef Decl,
429                                        LLVMMetadataRef File,
430                                        unsigned Line,
431                                        const char *Name, size_t NameLen);
432 
433 /**
434  * Creates a new DebugLocation that describes a source location.
435  * \param Line The line in the source file.
436  * \param Column The column in the source file.
437  * \param Scope The scope in which the location resides.
438  * \param InlinedAt The scope where this location was inlined, if at all.
439  *                  (optional).
440  * \note If the item to which this location is attached cannot be
441  *       attributed to a source line, pass 0 for the line and column.
442  */
443 LLVMMetadataRef
444 LLVMDIBuilderCreateDebugLocation(LLVMContextRef Ctx, unsigned Line,
445                                  unsigned Column, LLVMMetadataRef Scope,
446                                  LLVMMetadataRef InlinedAt);
447 
448 /**
449  * Get the line number of this debug location.
450  * \param Location     The debug location.
451  *
452  * @see DILocation::getLine()
453  */
454 unsigned LLVMDILocationGetLine(LLVMMetadataRef Location);
455 
456 /**
457  * Get the column number of this debug location.
458  * \param Location     The debug location.
459  *
460  * @see DILocation::getColumn()
461  */
462 unsigned LLVMDILocationGetColumn(LLVMMetadataRef Location);
463 
464 /**
465  * Get the local scope associated with this debug location.
466  * \param Location     The debug location.
467  *
468  * @see DILocation::getScope()
469  */
470 LLVMMetadataRef LLVMDILocationGetScope(LLVMMetadataRef Location);
471 
472 /**
473  * Get the "inline at" location associated with this debug location.
474  * \param Location     The debug location.
475  *
476  * @see DILocation::getInlinedAt()
477  */
478 LLVMMetadataRef LLVMDILocationGetInlinedAt(LLVMMetadataRef Location);
479 
480 /**
481  * Get the metadata of the file associated with a given scope.
482  * \param Scope     The scope object.
483  *
484  * @see DIScope::getFile()
485  */
486 LLVMMetadataRef LLVMDIScopeGetFile(LLVMMetadataRef Scope);
487 
488 /**
489  * Get the directory of a given file.
490  * \param File     The file object.
491  * \param Len      The length of the returned string.
492  *
493  * @see DIFile::getDirectory()
494  */
495 const char *LLVMDIFileGetDirectory(LLVMMetadataRef File, unsigned *Len);
496 
497 /**
498  * Get the name of a given file.
499  * \param File     The file object.
500  * \param Len      The length of the returned string.
501  *
502  * @see DIFile::getFilename()
503  */
504 const char *LLVMDIFileGetFilename(LLVMMetadataRef File, unsigned *Len);
505 
506 /**
507  * Get the source of a given file.
508  * \param File     The file object.
509  * \param Len      The length of the returned string.
510  *
511  * @see DIFile::getSource()
512  */
513 const char *LLVMDIFileGetSource(LLVMMetadataRef File, unsigned *Len);
514 
515 /**
516  * Create a type array.
517  * \param Builder        The DIBuilder.
518  * \param Data           The type elements.
519  * \param NumElements    Number of type elements.
520  */
521 LLVMMetadataRef LLVMDIBuilderGetOrCreateTypeArray(LLVMDIBuilderRef Builder,
522                                                   LLVMMetadataRef *Data,
523                                                   size_t NumElements);
524 
525 /**
526  * Create subroutine type.
527  * \param Builder        The DIBuilder.
528  * \param File            The file in which the subroutine resides.
529  * \param ParameterTypes  An array of subroutine parameter types. This
530  *                        includes return type at 0th index.
531  * \param NumParameterTypes The number of parameter types in \c ParameterTypes
532  * \param Flags           E.g.: \c LLVMDIFlagLValueReference.
533  *                        These flags are used to emit dwarf attributes.
534  */
535 LLVMMetadataRef
536 LLVMDIBuilderCreateSubroutineType(LLVMDIBuilderRef Builder,
537                                   LLVMMetadataRef File,
538                                   LLVMMetadataRef *ParameterTypes,
539                                   unsigned NumParameterTypes,
540                                   LLVMDIFlags Flags);
541 
542 /**
543  * Create debugging information entry for a macro.
544  * @param Builder         The DIBuilder.
545  * @param ParentMacroFile Macro parent (could be NULL).
546  * @param Line            Source line number where the macro is defined.
547  * @param RecordType      DW_MACINFO_define or DW_MACINFO_undef.
548  * @param Name            Macro name.
549  * @param NameLen         Macro name length.
550  * @param Value           Macro value.
551  * @param ValueLen        Macro value length.
552  */
553 LLVMMetadataRef LLVMDIBuilderCreateMacro(LLVMDIBuilderRef Builder,
554                                          LLVMMetadataRef ParentMacroFile,
555                                          unsigned Line,
556                                          LLVMDWARFMacinfoRecordType RecordType,
557                                          const char *Name, size_t NameLen,
558                                          const char *Value, size_t ValueLen);
559 
560 /**
561  * Create debugging information temporary entry for a macro file.
562  * List of macro node direct children will be calculated by DIBuilder,
563  * using the \p ParentMacroFile relationship.
564  * @param Builder         The DIBuilder.
565  * @param ParentMacroFile Macro parent (could be NULL).
566  * @param Line            Source line number where the macro file is included.
567  * @param File            File descriptor containing the name of the macro file.
568  */
569 LLVMMetadataRef
570 LLVMDIBuilderCreateTempMacroFile(LLVMDIBuilderRef Builder,
571                                  LLVMMetadataRef ParentMacroFile, unsigned Line,
572                                  LLVMMetadataRef File);
573 
574 /**
575  * Create debugging information entry for an enumerator.
576  * @param Builder        The DIBuilder.
577  * @param Name           Enumerator name.
578  * @param NameLen        Length of enumerator name.
579  * @param Value          Enumerator value.
580  * @param IsUnsigned     True if the value is unsigned.
581  */
582 LLVMMetadataRef LLVMDIBuilderCreateEnumerator(LLVMDIBuilderRef Builder,
583                                               const char *Name, size_t NameLen,
584                                               int64_t Value,
585                                               LLVMBool IsUnsigned);
586 
587 /**
588  * Create debugging information entry for an enumeration.
589  * \param Builder        The DIBuilder.
590  * \param Scope          Scope in which this enumeration is defined.
591  * \param Name           Enumeration name.
592  * \param NameLen        Length of enumeration name.
593  * \param File           File where this member is defined.
594  * \param LineNumber     Line number.
595  * \param SizeInBits     Member size.
596  * \param AlignInBits    Member alignment.
597  * \param Elements       Enumeration elements.
598  * \param NumElements    Number of enumeration elements.
599  * \param ClassTy        Underlying type of a C++11/ObjC fixed enum.
600  */
601 LLVMMetadataRef LLVMDIBuilderCreateEnumerationType(
602     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
603     size_t NameLen, LLVMMetadataRef File, unsigned LineNumber,
604     uint64_t SizeInBits, uint32_t AlignInBits, LLVMMetadataRef *Elements,
605     unsigned NumElements, LLVMMetadataRef ClassTy);
606 
607 /**
608  * Create debugging information entry for a union.
609  * \param Builder      The DIBuilder.
610  * \param Scope        Scope in which this union is defined.
611  * \param Name         Union name.
612  * \param NameLen      Length of union name.
613  * \param File         File where this member is defined.
614  * \param LineNumber   Line number.
615  * \param SizeInBits   Member size.
616  * \param AlignInBits  Member alignment.
617  * \param Flags        Flags to encode member attribute, e.g. private
618  * \param Elements     Union elements.
619  * \param NumElements  Number of union elements.
620  * \param RunTimeLang  Optional parameter, Objective-C runtime version.
621  * \param UniqueId     A unique identifier for the union.
622  * \param UniqueIdLen  Length of unique identifier.
623  */
624 LLVMMetadataRef LLVMDIBuilderCreateUnionType(
625     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
626     size_t NameLen, LLVMMetadataRef File, unsigned LineNumber,
627     uint64_t SizeInBits, uint32_t AlignInBits, LLVMDIFlags Flags,
628     LLVMMetadataRef *Elements, unsigned NumElements, unsigned RunTimeLang,
629     const char *UniqueId, size_t UniqueIdLen);
630 
631 
632 /**
633  * Create debugging information entry for an array.
634  * \param Builder      The DIBuilder.
635  * \param Size         Array size.
636  * \param AlignInBits  Alignment.
637  * \param Ty           Element type.
638  * \param Subscripts   Subscripts.
639  * \param NumSubscripts Number of subscripts.
640  */
641 LLVMMetadataRef
642 LLVMDIBuilderCreateArrayType(LLVMDIBuilderRef Builder, uint64_t Size,
643                              uint32_t AlignInBits, LLVMMetadataRef Ty,
644                              LLVMMetadataRef *Subscripts,
645                              unsigned NumSubscripts);
646 
647 /**
648  * Create debugging information entry for a vector type.
649  * \param Builder      The DIBuilder.
650  * \param Size         Vector size.
651  * \param AlignInBits  Alignment.
652  * \param Ty           Element type.
653  * \param Subscripts   Subscripts.
654  * \param NumSubscripts Number of subscripts.
655  */
656 LLVMMetadataRef
657 LLVMDIBuilderCreateVectorType(LLVMDIBuilderRef Builder, uint64_t Size,
658                               uint32_t AlignInBits, LLVMMetadataRef Ty,
659                               LLVMMetadataRef *Subscripts,
660                               unsigned NumSubscripts);
661 
662 /**
663  * Create a DWARF unspecified type.
664  * \param Builder   The DIBuilder.
665  * \param Name      The unspecified type's name.
666  * \param NameLen   Length of type name.
667  */
668 LLVMMetadataRef
669 LLVMDIBuilderCreateUnspecifiedType(LLVMDIBuilderRef Builder, const char *Name,
670                                    size_t NameLen);
671 
672 /**
673  * Create debugging information entry for a basic
674  * type.
675  * \param Builder     The DIBuilder.
676  * \param Name        Type name.
677  * \param NameLen     Length of type name.
678  * \param SizeInBits  Size of the type.
679  * \param Encoding    DWARF encoding code, e.g. \c LLVMDWARFTypeEncoding_float.
680  * \param Flags       Flags to encode optional attribute like endianity
681  */
682 LLVMMetadataRef
683 LLVMDIBuilderCreateBasicType(LLVMDIBuilderRef Builder, const char *Name,
684                              size_t NameLen, uint64_t SizeInBits,
685                              LLVMDWARFTypeEncoding Encoding,
686                              LLVMDIFlags Flags);
687 
688 /**
689  * Create debugging information entry for a pointer.
690  * \param Builder     The DIBuilder.
691  * \param PointeeTy         Type pointed by this pointer.
692  * \param SizeInBits        Size.
693  * \param AlignInBits       Alignment. (optional, pass 0 to ignore)
694  * \param AddressSpace      DWARF address space. (optional, pass 0 to ignore)
695  * \param Name              Pointer type name. (optional)
696  * \param NameLen           Length of pointer type name. (optional)
697  */
698 LLVMMetadataRef LLVMDIBuilderCreatePointerType(
699     LLVMDIBuilderRef Builder, LLVMMetadataRef PointeeTy,
700     uint64_t SizeInBits, uint32_t AlignInBits, unsigned AddressSpace,
701     const char *Name, size_t NameLen);
702 
703 /**
704  * Create debugging information entry for a struct.
705  * \param Builder     The DIBuilder.
706  * \param Scope        Scope in which this struct is defined.
707  * \param Name         Struct name.
708  * \param NameLen      Struct name length.
709  * \param File         File where this member is defined.
710  * \param LineNumber   Line number.
711  * \param SizeInBits   Member size.
712  * \param AlignInBits  Member alignment.
713  * \param Flags        Flags to encode member attribute, e.g. private
714  * \param Elements     Struct elements.
715  * \param NumElements  Number of struct elements.
716  * \param RunTimeLang  Optional parameter, Objective-C runtime version.
717  * \param VTableHolder The object containing the vtable for the struct.
718  * \param UniqueId     A unique identifier for the struct.
719  * \param UniqueIdLen  Length of the unique identifier for the struct.
720  */
721 LLVMMetadataRef LLVMDIBuilderCreateStructType(
722     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
723     size_t NameLen, LLVMMetadataRef File, unsigned LineNumber,
724     uint64_t SizeInBits, uint32_t AlignInBits, LLVMDIFlags Flags,
725     LLVMMetadataRef DerivedFrom, LLVMMetadataRef *Elements,
726     unsigned NumElements, unsigned RunTimeLang, LLVMMetadataRef VTableHolder,
727     const char *UniqueId, size_t UniqueIdLen);
728 
729 /**
730  * Create debugging information entry for a member.
731  * \param Builder      The DIBuilder.
732  * \param Scope        Member scope.
733  * \param Name         Member name.
734  * \param NameLen      Length of member name.
735  * \param File         File where this member is defined.
736  * \param LineNo       Line number.
737  * \param SizeInBits   Member size.
738  * \param AlignInBits  Member alignment.
739  * \param OffsetInBits Member offset.
740  * \param Flags        Flags to encode member attribute, e.g. private
741  * \param Ty           Parent type.
742  */
743 LLVMMetadataRef LLVMDIBuilderCreateMemberType(
744     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
745     size_t NameLen, LLVMMetadataRef File, unsigned LineNo,
746     uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits,
747     LLVMDIFlags Flags, LLVMMetadataRef Ty);
748 
749 /**
750  * Create debugging information entry for a
751  * C++ static data member.
752  * \param Builder      The DIBuilder.
753  * \param Scope        Member scope.
754  * \param Name         Member name.
755  * \param NameLen      Length of member name.
756  * \param File         File where this member is declared.
757  * \param LineNumber   Line number.
758  * \param Type         Type of the static member.
759  * \param Flags        Flags to encode member attribute, e.g. private.
760  * \param ConstantVal  Const initializer of the member.
761  * \param AlignInBits  Member alignment.
762  */
763 LLVMMetadataRef
764 LLVMDIBuilderCreateStaticMemberType(
765     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
766     size_t NameLen, LLVMMetadataRef File, unsigned LineNumber,
767     LLVMMetadataRef Type, LLVMDIFlags Flags, LLVMValueRef ConstantVal,
768     uint32_t AlignInBits);
769 
770 /**
771  * Create debugging information entry for a pointer to member.
772  * \param Builder      The DIBuilder.
773  * \param PointeeType  Type pointed to by this pointer.
774  * \param ClassType    Type for which this pointer points to members of.
775  * \param SizeInBits   Size.
776  * \param AlignInBits  Alignment.
777  * \param Flags        Flags.
778  */
779 LLVMMetadataRef
780 LLVMDIBuilderCreateMemberPointerType(LLVMDIBuilderRef Builder,
781                                      LLVMMetadataRef PointeeType,
782                                      LLVMMetadataRef ClassType,
783                                      uint64_t SizeInBits,
784                                      uint32_t AlignInBits,
785                                      LLVMDIFlags Flags);
786 /**
787  * Create debugging information entry for Objective-C instance variable.
788  * \param Builder      The DIBuilder.
789  * \param Name         Member name.
790  * \param NameLen      The length of the C string passed to \c Name.
791  * \param File         File where this member is defined.
792  * \param LineNo       Line number.
793  * \param SizeInBits   Member size.
794  * \param AlignInBits  Member alignment.
795  * \param OffsetInBits Member offset.
796  * \param Flags        Flags to encode member attribute, e.g. private
797  * \param Ty           Parent type.
798  * \param PropertyNode Property associated with this ivar.
799  */
800 LLVMMetadataRef
801 LLVMDIBuilderCreateObjCIVar(LLVMDIBuilderRef Builder,
802                             const char *Name, size_t NameLen,
803                             LLVMMetadataRef File, unsigned LineNo,
804                             uint64_t SizeInBits, uint32_t AlignInBits,
805                             uint64_t OffsetInBits, LLVMDIFlags Flags,
806                             LLVMMetadataRef Ty, LLVMMetadataRef PropertyNode);
807 
808 /**
809  * Create debugging information entry for Objective-C property.
810  * \param Builder            The DIBuilder.
811  * \param Name               Property name.
812  * \param NameLen            The length of the C string passed to \c Name.
813  * \param File               File where this property is defined.
814  * \param LineNo             Line number.
815  * \param GetterName         Name of the Objective C property getter selector.
816  * \param GetterNameLen      The length of the C string passed to \c GetterName.
817  * \param SetterName         Name of the Objective C property setter selector.
818  * \param SetterNameLen      The length of the C string passed to \c SetterName.
819  * \param PropertyAttributes Objective C property attributes.
820  * \param Ty                 Type.
821  */
822 LLVMMetadataRef
823 LLVMDIBuilderCreateObjCProperty(LLVMDIBuilderRef Builder,
824                                 const char *Name, size_t NameLen,
825                                 LLVMMetadataRef File, unsigned LineNo,
826                                 const char *GetterName, size_t GetterNameLen,
827                                 const char *SetterName, size_t SetterNameLen,
828                                 unsigned PropertyAttributes,
829                                 LLVMMetadataRef Ty);
830 
831 /**
832  * Create a uniqued DIType* clone with FlagObjectPointer and FlagArtificial set.
833  * \param Builder   The DIBuilder.
834  * \param Type      The underlying type to which this pointer points.
835  */
836 LLVMMetadataRef
837 LLVMDIBuilderCreateObjectPointerType(LLVMDIBuilderRef Builder,
838                                      LLVMMetadataRef Type);
839 
840 /**
841  * Create debugging information entry for a qualified
842  * type, e.g. 'const int'.
843  * \param Builder     The DIBuilder.
844  * \param Tag         Tag identifying type,
845  *                    e.g. LLVMDWARFTypeQualifier_volatile_type
846  * \param Type        Base Type.
847  */
848 LLVMMetadataRef
849 LLVMDIBuilderCreateQualifiedType(LLVMDIBuilderRef Builder, unsigned Tag,
850                                  LLVMMetadataRef Type);
851 
852 /**
853  * Create debugging information entry for a c++
854  * style reference or rvalue reference type.
855  * \param Builder   The DIBuilder.
856  * \param Tag       Tag identifying type,
857  * \param Type      Base Type.
858  */
859 LLVMMetadataRef
860 LLVMDIBuilderCreateReferenceType(LLVMDIBuilderRef Builder, unsigned Tag,
861                                  LLVMMetadataRef Type);
862 
863 /**
864  * Create C++11 nullptr type.
865  * \param Builder   The DIBuilder.
866  */
867 LLVMMetadataRef
868 LLVMDIBuilderCreateNullPtrType(LLVMDIBuilderRef Builder);
869 
870 /**
871  * Create debugging information entry for a typedef.
872  * \param Builder    The DIBuilder.
873  * \param Type       Original type.
874  * \param Name       Typedef name.
875  * \param File       File where this type is defined.
876  * \param LineNo     Line number.
877  * \param Scope      The surrounding context for the typedef.
878  */
879 LLVMMetadataRef
880 LLVMDIBuilderCreateTypedef(LLVMDIBuilderRef Builder, LLVMMetadataRef Type,
881                            const char *Name, size_t NameLen,
882                            LLVMMetadataRef File, unsigned LineNo,
883                            LLVMMetadataRef Scope, uint32_t AlignInBits);
884 
885 /**
886  * Create debugging information entry to establish inheritance relationship
887  * between two types.
888  * \param Builder       The DIBuilder.
889  * \param Ty            Original type.
890  * \param BaseTy        Base type. Ty is inherits from base.
891  * \param BaseOffset    Base offset.
892  * \param VBPtrOffset  Virtual base pointer offset.
893  * \param Flags         Flags to describe inheritance attribute, e.g. private
894  */
895 LLVMMetadataRef
896 LLVMDIBuilderCreateInheritance(LLVMDIBuilderRef Builder,
897                                LLVMMetadataRef Ty, LLVMMetadataRef BaseTy,
898                                uint64_t BaseOffset, uint32_t VBPtrOffset,
899                                LLVMDIFlags Flags);
900 
901 /**
902  * Create a permanent forward-declared type.
903  * \param Builder             The DIBuilder.
904  * \param Tag                 A unique tag for this type.
905  * \param Name                Type name.
906  * \param NameLen             Length of type name.
907  * \param Scope               Type scope.
908  * \param File                File where this type is defined.
909  * \param Line                Line number where this type is defined.
910  * \param RuntimeLang         Indicates runtime version for languages like
911  *                            Objective-C.
912  * \param SizeInBits          Member size.
913  * \param AlignInBits         Member alignment.
914  * \param UniqueIdentifier    A unique identifier for the type.
915  * \param UniqueIdentifierLen Length of the unique identifier.
916  */
917 LLVMMetadataRef LLVMDIBuilderCreateForwardDecl(
918     LLVMDIBuilderRef Builder, unsigned Tag, const char *Name,
919     size_t NameLen, LLVMMetadataRef Scope, LLVMMetadataRef File, unsigned Line,
920     unsigned RuntimeLang, uint64_t SizeInBits, uint32_t AlignInBits,
921     const char *UniqueIdentifier, size_t UniqueIdentifierLen);
922 
923 /**
924  * Create a temporary forward-declared type.
925  * \param Builder             The DIBuilder.
926  * \param Tag                 A unique tag for this type.
927  * \param Name                Type name.
928  * \param NameLen             Length of type name.
929  * \param Scope               Type scope.
930  * \param File                File where this type is defined.
931  * \param Line                Line number where this type is defined.
932  * \param RuntimeLang         Indicates runtime version for languages like
933  *                            Objective-C.
934  * \param SizeInBits          Member size.
935  * \param AlignInBits         Member alignment.
936  * \param Flags               Flags.
937  * \param UniqueIdentifier    A unique identifier for the type.
938  * \param UniqueIdentifierLen Length of the unique identifier.
939  */
940 LLVMMetadataRef
941 LLVMDIBuilderCreateReplaceableCompositeType(
942     LLVMDIBuilderRef Builder, unsigned Tag, const char *Name,
943     size_t NameLen, LLVMMetadataRef Scope, LLVMMetadataRef File, unsigned Line,
944     unsigned RuntimeLang, uint64_t SizeInBits, uint32_t AlignInBits,
945     LLVMDIFlags Flags, const char *UniqueIdentifier,
946     size_t UniqueIdentifierLen);
947 
948 /**
949  * Create debugging information entry for a bit field member.
950  * \param Builder             The DIBuilder.
951  * \param Scope               Member scope.
952  * \param Name                Member name.
953  * \param NameLen             Length of member name.
954  * \param File                File where this member is defined.
955  * \param LineNumber          Line number.
956  * \param SizeInBits          Member size.
957  * \param OffsetInBits        Member offset.
958  * \param StorageOffsetInBits Member storage offset.
959  * \param Flags               Flags to encode member attribute.
960  * \param Type                Parent type.
961  */
962 LLVMMetadataRef
963 LLVMDIBuilderCreateBitFieldMemberType(LLVMDIBuilderRef Builder,
964                                       LLVMMetadataRef Scope,
965                                       const char *Name, size_t NameLen,
966                                       LLVMMetadataRef File, unsigned LineNumber,
967                                       uint64_t SizeInBits,
968                                       uint64_t OffsetInBits,
969                                       uint64_t StorageOffsetInBits,
970                                       LLVMDIFlags Flags, LLVMMetadataRef Type);
971 
972 /**
973  * Create debugging information entry for a class.
974  * \param Scope               Scope in which this class is defined.
975  * \param Name                Class name.
976  * \param NameLen             The length of the C string passed to \c Name.
977  * \param File                File where this member is defined.
978  * \param LineNumber          Line number.
979  * \param SizeInBits          Member size.
980  * \param AlignInBits         Member alignment.
981  * \param OffsetInBits        Member offset.
982  * \param Flags               Flags to encode member attribute, e.g. private.
983  * \param DerivedFrom         Debug info of the base class of this type.
984  * \param Elements            Class members.
985  * \param NumElements         Number of class elements.
986  * \param VTableHolder        Debug info of the base class that contains vtable
987  *                            for this type. This is used in
988  *                            DW_AT_containing_type. See DWARF documentation
989  *                            for more info.
990  * \param TemplateParamsNode  Template type parameters.
991  * \param UniqueIdentifier    A unique identifier for the type.
992  * \param UniqueIdentifierLen Length of the unique identifier.
993  */
994 LLVMMetadataRef LLVMDIBuilderCreateClassType(LLVMDIBuilderRef Builder,
995     LLVMMetadataRef Scope, const char *Name, size_t NameLen,
996     LLVMMetadataRef File, unsigned LineNumber, uint64_t SizeInBits,
997     uint32_t AlignInBits, uint64_t OffsetInBits, LLVMDIFlags Flags,
998     LLVMMetadataRef DerivedFrom,
999     LLVMMetadataRef *Elements, unsigned NumElements,
1000     LLVMMetadataRef VTableHolder, LLVMMetadataRef TemplateParamsNode,
1001     const char *UniqueIdentifier, size_t UniqueIdentifierLen);
1002 
1003 /**
1004  * Create a uniqued DIType* clone with FlagArtificial set.
1005  * \param Builder     The DIBuilder.
1006  * \param Type        The underlying type.
1007  */
1008 LLVMMetadataRef
1009 LLVMDIBuilderCreateArtificialType(LLVMDIBuilderRef Builder,
1010                                   LLVMMetadataRef Type);
1011 
1012 /**
1013  * Get the name of this DIType.
1014  * \param DType     The DIType.
1015  * \param Length    The length of the returned string.
1016  *
1017  * @see DIType::getName()
1018  */
1019 const char *LLVMDITypeGetName(LLVMMetadataRef DType, size_t *Length);
1020 
1021 /**
1022  * Get the size of this DIType in bits.
1023  * \param DType     The DIType.
1024  *
1025  * @see DIType::getSizeInBits()
1026  */
1027 uint64_t LLVMDITypeGetSizeInBits(LLVMMetadataRef DType);
1028 
1029 /**
1030  * Get the offset of this DIType in bits.
1031  * \param DType     The DIType.
1032  *
1033  * @see DIType::getOffsetInBits()
1034  */
1035 uint64_t LLVMDITypeGetOffsetInBits(LLVMMetadataRef DType);
1036 
1037 /**
1038  * Get the alignment of this DIType in bits.
1039  * \param DType     The DIType.
1040  *
1041  * @see DIType::getAlignInBits()
1042  */
1043 uint32_t LLVMDITypeGetAlignInBits(LLVMMetadataRef DType);
1044 
1045 /**
1046  * Get the source line where this DIType is declared.
1047  * \param DType     The DIType.
1048  *
1049  * @see DIType::getLine()
1050  */
1051 unsigned LLVMDITypeGetLine(LLVMMetadataRef DType);
1052 
1053 /**
1054  * Get the flags associated with this DIType.
1055  * \param DType     The DIType.
1056  *
1057  * @see DIType::getFlags()
1058  */
1059 LLVMDIFlags LLVMDITypeGetFlags(LLVMMetadataRef DType);
1060 
1061 /**
1062  * Create a descriptor for a value range.
1063  * \param Builder    The DIBuilder.
1064  * \param LowerBound Lower bound of the subrange, e.g. 0 for C, 1 for Fortran.
1065  * \param Count      Count of elements in the subrange.
1066  */
1067 LLVMMetadataRef LLVMDIBuilderGetOrCreateSubrange(LLVMDIBuilderRef Builder,
1068                                                  int64_t LowerBound,
1069                                                  int64_t Count);
1070 
1071 /**
1072  * Create an array of DI Nodes.
1073  * \param Builder        The DIBuilder.
1074  * \param Data           The DI Node elements.
1075  * \param NumElements    Number of DI Node elements.
1076  */
1077 LLVMMetadataRef LLVMDIBuilderGetOrCreateArray(LLVMDIBuilderRef Builder,
1078                                               LLVMMetadataRef *Data,
1079                                               size_t NumElements);
1080 
1081 /**
1082  * Create a new descriptor for the specified variable which has a complex
1083  * address expression for its address.
1084  * \param Builder     The DIBuilder.
1085  * \param Addr        An array of complex address operations.
1086  * \param Length      Length of the address operation array.
1087  */
1088 LLVMMetadataRef LLVMDIBuilderCreateExpression(LLVMDIBuilderRef Builder,
1089                                               int64_t *Addr, size_t Length);
1090 
1091 /**
1092  * Create a new descriptor for the specified variable that does not have an
1093  * address, but does have a constant value.
1094  * \param Builder     The DIBuilder.
1095  * \param Value       The constant value.
1096  */
1097 LLVMMetadataRef
1098 LLVMDIBuilderCreateConstantValueExpression(LLVMDIBuilderRef Builder,
1099                                            int64_t Value);
1100 
1101 /**
1102  * Create a new descriptor for the specified variable.
1103  * \param Scope       Variable scope.
1104  * \param Name        Name of the variable.
1105  * \param NameLen     The length of the C string passed to \c Name.
1106  * \param Linkage     Mangled  name of the variable.
1107  * \param LinkLen     The length of the C string passed to \c Linkage.
1108  * \param File        File where this variable is defined.
1109  * \param LineNo      Line number.
1110  * \param Ty          Variable Type.
1111  * \param LocalToUnit Boolean flag indicate whether this variable is
1112  *                    externally visible or not.
1113  * \param Expr        The location of the global relative to the attached
1114  *                    GlobalVariable.
1115  * \param Decl        Reference to the corresponding declaration.
1116  *                    variables.
1117  * \param AlignInBits Variable alignment(or 0 if no alignment attr was
1118  *                    specified)
1119  */
1120 LLVMMetadataRef LLVMDIBuilderCreateGlobalVariableExpression(
1121     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
1122     size_t NameLen, const char *Linkage, size_t LinkLen, LLVMMetadataRef File,
1123     unsigned LineNo, LLVMMetadataRef Ty, LLVMBool LocalToUnit,
1124     LLVMMetadataRef Expr, LLVMMetadataRef Decl, uint32_t AlignInBits);
1125 
1126 /**
1127  * Retrieves the \c DIVariable associated with this global variable expression.
1128  * \param GVE    The global variable expression.
1129  *
1130  * @see llvm::DIGlobalVariableExpression::getVariable()
1131  */
1132 LLVMMetadataRef LLVMDIGlobalVariableExpressionGetVariable(LLVMMetadataRef GVE);
1133 
1134 /**
1135  * Retrieves the \c DIExpression associated with this global variable expression.
1136  * \param GVE    The global variable expression.
1137  *
1138  * @see llvm::DIGlobalVariableExpression::getExpression()
1139  */
1140 LLVMMetadataRef LLVMDIGlobalVariableExpressionGetExpression(
1141     LLVMMetadataRef GVE);
1142 
1143 /**
1144  * Get the metadata of the file associated with a given variable.
1145  * \param Var     The variable object.
1146  *
1147  * @see DIVariable::getFile()
1148  */
1149 LLVMMetadataRef LLVMDIVariableGetFile(LLVMMetadataRef Var);
1150 
1151 /**
1152  * Get the metadata of the scope associated with a given variable.
1153  * \param Var     The variable object.
1154  *
1155  * @see DIVariable::getScope()
1156  */
1157 LLVMMetadataRef LLVMDIVariableGetScope(LLVMMetadataRef Var);
1158 
1159 /**
1160  * Get the source line where this \c DIVariable is declared.
1161  * \param Var     The DIVariable.
1162  *
1163  * @see DIVariable::getLine()
1164  */
1165 unsigned LLVMDIVariableGetLine(LLVMMetadataRef Var);
1166 
1167 /**
1168  * Create a new temporary \c MDNode.  Suitable for use in constructing cyclic
1169  * \c MDNode structures. A temporary \c MDNode is not uniqued, may be RAUW'd,
1170  * and must be manually deleted with \c LLVMDisposeTemporaryMDNode.
1171  * \param Ctx            The context in which to construct the temporary node.
1172  * \param Data           The metadata elements.
1173  * \param NumElements    Number of metadata elements.
1174  */
1175 LLVMMetadataRef LLVMTemporaryMDNode(LLVMContextRef Ctx, LLVMMetadataRef *Data,
1176                                     size_t NumElements);
1177 
1178 /**
1179  * Deallocate a temporary node.
1180  *
1181  * Calls \c replaceAllUsesWith(nullptr) before deleting, so any remaining
1182  * references will be reset.
1183  * \param TempNode    The temporary metadata node.
1184  */
1185 void LLVMDisposeTemporaryMDNode(LLVMMetadataRef TempNode);
1186 
1187 /**
1188  * Replace all uses of temporary metadata.
1189  * \param TempTargetMetadata    The temporary metadata node.
1190  * \param Replacement           The replacement metadata node.
1191  */
1192 void LLVMMetadataReplaceAllUsesWith(LLVMMetadataRef TempTargetMetadata,
1193                                     LLVMMetadataRef Replacement);
1194 
1195 /**
1196  * Create a new descriptor for the specified global variable that is temporary
1197  * and meant to be RAUWed.
1198  * \param Scope       Variable scope.
1199  * \param Name        Name of the variable.
1200  * \param NameLen     The length of the C string passed to \c Name.
1201  * \param Linkage     Mangled  name of the variable.
1202  * \param LnkLen      The length of the C string passed to \c Linkage.
1203  * \param File        File where this variable is defined.
1204  * \param LineNo      Line number.
1205  * \param Ty          Variable Type.
1206  * \param LocalToUnit Boolean flag indicate whether this variable is
1207  *                    externally visible or not.
1208  * \param Decl        Reference to the corresponding declaration.
1209  * \param AlignInBits Variable alignment(or 0 if no alignment attr was
1210  *                    specified)
1211  */
1212 LLVMMetadataRef LLVMDIBuilderCreateTempGlobalVariableFwdDecl(
1213     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
1214     size_t NameLen, const char *Linkage, size_t LnkLen, LLVMMetadataRef File,
1215     unsigned LineNo, LLVMMetadataRef Ty, LLVMBool LocalToUnit,
1216     LLVMMetadataRef Decl, uint32_t AlignInBits);
1217 
1218 /**
1219  * Insert a new llvm.dbg.declare intrinsic call before the given instruction.
1220  * \param Builder     The DIBuilder.
1221  * \param Storage     The storage of the variable to declare.
1222  * \param VarInfo     The variable's debug info descriptor.
1223  * \param Expr        A complex location expression for the variable.
1224  * \param DebugLoc    Debug info location.
1225  * \param Instr       Instruction acting as a location for the new intrinsic.
1226  */
1227 LLVMValueRef LLVMDIBuilderInsertDeclareBefore(
1228   LLVMDIBuilderRef Builder, LLVMValueRef Storage, LLVMMetadataRef VarInfo,
1229   LLVMMetadataRef Expr, LLVMMetadataRef DebugLoc, LLVMValueRef Instr);
1230 
1231 /**
1232  * Insert a new llvm.dbg.declare intrinsic call at the end of the given basic
1233  * block. If the basic block has a terminator instruction, the intrinsic is
1234  * inserted before that terminator instruction.
1235  * \param Builder     The DIBuilder.
1236  * \param Storage     The storage of the variable to declare.
1237  * \param VarInfo     The variable's debug info descriptor.
1238  * \param Expr        A complex location expression for the variable.
1239  * \param DebugLoc    Debug info location.
1240  * \param Block       Basic block acting as a location for the new intrinsic.
1241  */
1242 LLVMValueRef LLVMDIBuilderInsertDeclareAtEnd(
1243     LLVMDIBuilderRef Builder, LLVMValueRef Storage, LLVMMetadataRef VarInfo,
1244     LLVMMetadataRef Expr, LLVMMetadataRef DebugLoc, LLVMBasicBlockRef Block);
1245 
1246 /**
1247  * Insert a new llvm.dbg.value intrinsic call before the given instruction.
1248  * \param Builder     The DIBuilder.
1249  * \param Val         The value of the variable.
1250  * \param VarInfo     The variable's debug info descriptor.
1251  * \param Expr        A complex location expression for the variable.
1252  * \param DebugLoc    Debug info location.
1253  * \param Instr       Instruction acting as a location for the new intrinsic.
1254  */
1255 LLVMValueRef LLVMDIBuilderInsertDbgValueBefore(LLVMDIBuilderRef Builder,
1256                                                LLVMValueRef Val,
1257                                                LLVMMetadataRef VarInfo,
1258                                                LLVMMetadataRef Expr,
1259                                                LLVMMetadataRef DebugLoc,
1260                                                LLVMValueRef Instr);
1261 
1262 /**
1263  * Insert a new llvm.dbg.value intrinsic call at the end of the given basic
1264  * block. If the basic block has a terminator instruction, the intrinsic is
1265  * inserted before that terminator instruction.
1266  * \param Builder     The DIBuilder.
1267  * \param Val         The value of the variable.
1268  * \param VarInfo     The variable's debug info descriptor.
1269  * \param Expr        A complex location expression for the variable.
1270  * \param DebugLoc    Debug info location.
1271  * \param Block       Basic block acting as a location for the new intrinsic.
1272  */
1273 LLVMValueRef LLVMDIBuilderInsertDbgValueAtEnd(LLVMDIBuilderRef Builder,
1274                                               LLVMValueRef Val,
1275                                               LLVMMetadataRef VarInfo,
1276                                               LLVMMetadataRef Expr,
1277                                               LLVMMetadataRef DebugLoc,
1278                                               LLVMBasicBlockRef Block);
1279 
1280 /**
1281  * Create a new descriptor for a local auto variable.
1282  * \param Builder         The DIBuilder.
1283  * \param Scope           The local scope the variable is declared in.
1284  * \param Name            Variable name.
1285  * \param NameLen         Length of variable name.
1286  * \param File            File where this variable is defined.
1287  * \param LineNo          Line number.
1288  * \param Ty              Metadata describing the type of the variable.
1289  * \param AlwaysPreserve  If true, this descriptor will survive optimizations.
1290  * \param Flags           Flags.
1291  * \param AlignInBits     Variable alignment.
1292  */
1293 LLVMMetadataRef LLVMDIBuilderCreateAutoVariable(
1294     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
1295     size_t NameLen, LLVMMetadataRef File, unsigned LineNo, LLVMMetadataRef Ty,
1296     LLVMBool AlwaysPreserve, LLVMDIFlags Flags, uint32_t AlignInBits);
1297 
1298 /**
1299  * Create a new descriptor for a function parameter variable.
1300  * \param Builder         The DIBuilder.
1301  * \param Scope           The local scope the variable is declared in.
1302  * \param Name            Variable name.
1303  * \param NameLen         Length of variable name.
1304  * \param ArgNo           Unique argument number for this variable; starts at 1.
1305  * \param File            File where this variable is defined.
1306  * \param LineNo          Line number.
1307  * \param Ty              Metadata describing the type of the variable.
1308  * \param AlwaysPreserve  If true, this descriptor will survive optimizations.
1309  * \param Flags           Flags.
1310  */
1311 LLVMMetadataRef LLVMDIBuilderCreateParameterVariable(
1312     LLVMDIBuilderRef Builder, LLVMMetadataRef Scope, const char *Name,
1313     size_t NameLen, unsigned ArgNo, LLVMMetadataRef File, unsigned LineNo,
1314     LLVMMetadataRef Ty, LLVMBool AlwaysPreserve, LLVMDIFlags Flags);
1315 
1316 /**
1317  * Get the metadata of the subprogram attached to a function.
1318  *
1319  * @see llvm::Function::getSubprogram()
1320  */
1321 LLVMMetadataRef LLVMGetSubprogram(LLVMValueRef Func);
1322 
1323 /**
1324  * Set the subprogram attached to a function.
1325  *
1326  * @see llvm::Function::setSubprogram()
1327  */
1328 void LLVMSetSubprogram(LLVMValueRef Func, LLVMMetadataRef SP);
1329 
1330 /**
1331  * Get the line associated with a given subprogram.
1332  * \param Subprogram     The subprogram object.
1333  *
1334  * @see DISubprogram::getLine()
1335  */
1336 unsigned LLVMDISubprogramGetLine(LLVMMetadataRef Subprogram);
1337 
1338 /**
1339  * Get the debug location for the given instruction.
1340  *
1341  * @see llvm::Instruction::getDebugLoc()
1342  */
1343 LLVMMetadataRef LLVMInstructionGetDebugLoc(LLVMValueRef Inst);
1344 
1345 /**
1346  * Set the debug location for the given instruction.
1347  *
1348  * To clear the location metadata of the given instruction, pass NULL to \p Loc.
1349  *
1350  * @see llvm::Instruction::setDebugLoc()
1351  */
1352 void LLVMInstructionSetDebugLoc(LLVMValueRef Inst, LLVMMetadataRef Loc);
1353 
1354 /**
1355  * Obtain the enumerated type of a Metadata instance.
1356  *
1357  * @see llvm::Metadata::getMetadataID()
1358  */
1359 LLVMMetadataKind LLVMGetMetadataKind(LLVMMetadataRef Metadata);
1360 
1361 LLVM_C_EXTERN_C_END
1362 
1363 #endif
1364