1 | //===- llvm/IR/DebugInfoMetadata.h - Debug info metadata --------*- C++ -*-===// |
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 | // Declarations for metadata specific to debug info. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_IR_DEBUGINFOMETADATA_H |
14 | #define LLVM_IR_DEBUGINFOMETADATA_H |
15 | |
16 | #include "llvm/ADT/ArrayRef.h" |
17 | #include "llvm/ADT/BitmaskEnum.h" |
18 | #include "llvm/ADT/PointerUnion.h" |
19 | #include "llvm/ADT/STLExtras.h" |
20 | #include "llvm/ADT/SmallVector.h" |
21 | #include "llvm/ADT/StringRef.h" |
22 | #include "llvm/ADT/iterator_range.h" |
23 | #include "llvm/IR/Constants.h" |
24 | #include "llvm/IR/Metadata.h" |
25 | #include "llvm/IR/PseudoProbe.h" |
26 | #include "llvm/Support/Casting.h" |
27 | #include "llvm/Support/CommandLine.h" |
28 | #include "llvm/Support/Discriminator.h" |
29 | #include <cassert> |
30 | #include <climits> |
31 | #include <cstddef> |
32 | #include <cstdint> |
33 | #include <iterator> |
34 | #include <optional> |
35 | #include <vector> |
36 | |
37 | // Helper macros for defining get() overrides. |
38 | #define DEFINE_MDNODE_GET_UNPACK_IMPL(...) __VA_ARGS__ |
39 | #define DEFINE_MDNODE_GET_UNPACK(ARGS) DEFINE_MDNODE_GET_UNPACK_IMPL ARGS |
40 | #define DEFINE_MDNODE_GET_DISTINCT_TEMPORARY(CLASS, FORMAL, ARGS) \ |
41 | static CLASS *getDistinct(LLVMContext &Context, \ |
42 | DEFINE_MDNODE_GET_UNPACK(FORMAL)) { \ |
43 | return getImpl(Context, DEFINE_MDNODE_GET_UNPACK(ARGS), Distinct); \ |
44 | } \ |
45 | static Temp##CLASS getTemporary(LLVMContext &Context, \ |
46 | DEFINE_MDNODE_GET_UNPACK(FORMAL)) { \ |
47 | return Temp##CLASS( \ |
48 | getImpl(Context, DEFINE_MDNODE_GET_UNPACK(ARGS), Temporary)); \ |
49 | } |
50 | #define DEFINE_MDNODE_GET(CLASS, FORMAL, ARGS) \ |
51 | static CLASS *get(LLVMContext &Context, DEFINE_MDNODE_GET_UNPACK(FORMAL)) { \ |
52 | return getImpl(Context, DEFINE_MDNODE_GET_UNPACK(ARGS), Uniqued); \ |
53 | } \ |
54 | static CLASS *getIfExists(LLVMContext &Context, \ |
55 | DEFINE_MDNODE_GET_UNPACK(FORMAL)) { \ |
56 | return getImpl(Context, DEFINE_MDNODE_GET_UNPACK(ARGS), Uniqued, \ |
57 | /* ShouldCreate */ false); \ |
58 | } \ |
59 | DEFINE_MDNODE_GET_DISTINCT_TEMPORARY(CLASS, FORMAL, ARGS) |
60 | |
61 | namespace llvm { |
62 | |
63 | namespace dwarf { |
64 | enum Tag : uint16_t; |
65 | } |
66 | |
67 | class DbgVariableIntrinsic; |
68 | class DPValue; |
69 | |
70 | extern cl::opt<bool> EnableFSDiscriminator; |
71 | |
72 | class DITypeRefArray { |
73 | const MDTuple *N = nullptr; |
74 | |
75 | public: |
76 | DITypeRefArray() = default; |
77 | DITypeRefArray(const MDTuple *N) : N(N) {} |
78 | |
79 | explicit operator bool() const { return get(); } |
80 | explicit operator MDTuple *() const { return get(); } |
81 | |
82 | MDTuple *get() const { return const_cast<MDTuple *>(N); } |
83 | MDTuple *operator->() const { return get(); } |
84 | MDTuple &operator*() const { return *get(); } |
85 | |
86 | // FIXME: Fix callers and remove condition on N. |
87 | unsigned size() const { return N ? N->getNumOperands() : 0u; } |
88 | DIType *operator[](unsigned I) const { |
89 | return cast_or_null<DIType>(Val: N->getOperand(I)); |
90 | } |
91 | |
92 | class iterator { |
93 | MDNode::op_iterator I = nullptr; |
94 | |
95 | public: |
96 | using iterator_category = std::input_iterator_tag; |
97 | using value_type = DIType *; |
98 | using difference_type = std::ptrdiff_t; |
99 | using pointer = void; |
100 | using reference = DIType *; |
101 | |
102 | iterator() = default; |
103 | explicit iterator(MDNode::op_iterator I) : I(I) {} |
104 | |
105 | DIType *operator*() const { return cast_or_null<DIType>(Val: *I); } |
106 | |
107 | iterator &operator++() { |
108 | ++I; |
109 | return *this; |
110 | } |
111 | |
112 | iterator operator++(int) { |
113 | iterator Temp(*this); |
114 | ++I; |
115 | return Temp; |
116 | } |
117 | |
118 | bool operator==(const iterator &X) const { return I == X.I; } |
119 | bool operator!=(const iterator &X) const { return I != X.I; } |
120 | }; |
121 | |
122 | // FIXME: Fix callers and remove condition on N. |
123 | iterator begin() const { return N ? iterator(N->op_begin()) : iterator(); } |
124 | iterator end() const { return N ? iterator(N->op_end()) : iterator(); } |
125 | }; |
126 | |
127 | /// Tagged DWARF-like metadata node. |
128 | /// |
129 | /// A metadata node with a DWARF tag (i.e., a constant named \c DW_TAG_*, |
130 | /// defined in llvm/BinaryFormat/Dwarf.h). Called \a DINode because it's |
131 | /// potentially used for non-DWARF output. |
132 | /// |
133 | /// Uses the SubclassData16 Metadata slot. |
134 | class DINode : public MDNode { |
135 | friend class LLVMContextImpl; |
136 | friend class MDNode; |
137 | |
138 | protected: |
139 | DINode(LLVMContext &C, unsigned ID, StorageType Storage, unsigned Tag, |
140 | ArrayRef<Metadata *> Ops1, ArrayRef<Metadata *> Ops2 = std::nullopt) |
141 | : MDNode(C, ID, Storage, Ops1, Ops2) { |
142 | assert(Tag < 1u << 16); |
143 | SubclassData16 = Tag; |
144 | } |
145 | ~DINode() = default; |
146 | |
147 | template <class Ty> Ty *getOperandAs(unsigned I) const { |
148 | return cast_or_null<Ty>(getOperand(I)); |
149 | } |
150 | |
151 | StringRef getStringOperand(unsigned I) const { |
152 | if (auto *S = getOperandAs<MDString>(I)) |
153 | return S->getString(); |
154 | return StringRef(); |
155 | } |
156 | |
157 | static MDString *getCanonicalMDString(LLVMContext &Context, StringRef S) { |
158 | if (S.empty()) |
159 | return nullptr; |
160 | return MDString::get(Context, Str: S); |
161 | } |
162 | |
163 | /// Allow subclasses to mutate the tag. |
164 | void setTag(unsigned Tag) { SubclassData16 = Tag; } |
165 | |
166 | public: |
167 | dwarf::Tag getTag() const; |
168 | |
169 | /// Debug info flags. |
170 | /// |
171 | /// The three accessibility flags are mutually exclusive and rolled together |
172 | /// in the first two bits. |
173 | enum DIFlags : uint32_t { |
174 | #define HANDLE_DI_FLAG(ID, NAME) Flag##NAME = ID, |
175 | #define DI_FLAG_LARGEST_NEEDED |
176 | #include "llvm/IR/DebugInfoFlags.def" |
177 | FlagAccessibility = FlagPrivate | FlagProtected | FlagPublic, |
178 | FlagPtrToMemberRep = FlagSingleInheritance | FlagMultipleInheritance | |
179 | FlagVirtualInheritance, |
180 | LLVM_MARK_AS_BITMASK_ENUM(FlagLargest) |
181 | }; |
182 | |
183 | static DIFlags getFlag(StringRef Flag); |
184 | static StringRef getFlagString(DIFlags Flag); |
185 | |
186 | /// Split up a flags bitfield. |
187 | /// |
188 | /// Split \c Flags into \c SplitFlags, a vector of its components. Returns |
189 | /// any remaining (unrecognized) bits. |
190 | static DIFlags splitFlags(DIFlags Flags, |
191 | SmallVectorImpl<DIFlags> &SplitFlags); |
192 | |
193 | static bool classof(const Metadata *MD) { |
194 | switch (MD->getMetadataID()) { |
195 | default: |
196 | return false; |
197 | case GenericDINodeKind: |
198 | case DISubrangeKind: |
199 | case DIEnumeratorKind: |
200 | case DIBasicTypeKind: |
201 | case DIStringTypeKind: |
202 | case DIDerivedTypeKind: |
203 | case DICompositeTypeKind: |
204 | case DISubroutineTypeKind: |
205 | case DIFileKind: |
206 | case DICompileUnitKind: |
207 | case DISubprogramKind: |
208 | case DILexicalBlockKind: |
209 | case DILexicalBlockFileKind: |
210 | case DINamespaceKind: |
211 | case DICommonBlockKind: |
212 | case DITemplateTypeParameterKind: |
213 | case DITemplateValueParameterKind: |
214 | case DIGlobalVariableKind: |
215 | case DILocalVariableKind: |
216 | case DILabelKind: |
217 | case DIObjCPropertyKind: |
218 | case DIImportedEntityKind: |
219 | case DIModuleKind: |
220 | case DIGenericSubrangeKind: |
221 | case DIAssignIDKind: |
222 | return true; |
223 | } |
224 | } |
225 | }; |
226 | |
227 | /// Generic tagged DWARF-like metadata node. |
228 | /// |
229 | /// An un-specialized DWARF-like metadata node. The first operand is a |
230 | /// (possibly empty) null-separated \a MDString header that contains arbitrary |
231 | /// fields. The remaining operands are \a dwarf_operands(), and are pointers |
232 | /// to other metadata. |
233 | /// |
234 | /// Uses the SubclassData32 Metadata slot. |
235 | class GenericDINode : public DINode { |
236 | friend class LLVMContextImpl; |
237 | friend class MDNode; |
238 | |
239 | GenericDINode(LLVMContext &C, StorageType Storage, unsigned Hash, |
240 | unsigned Tag, ArrayRef<Metadata *> Ops1, |
241 | ArrayRef<Metadata *> Ops2) |
242 | : DINode(C, GenericDINodeKind, Storage, Tag, Ops1, Ops2) { |
243 | setHash(Hash); |
244 | } |
245 | ~GenericDINode() { dropAllReferences(); } |
246 | |
247 | void setHash(unsigned Hash) { SubclassData32 = Hash; } |
248 | void recalculateHash(); |
249 | |
250 | static GenericDINode *getImpl(LLVMContext &Context, unsigned Tag, |
251 | StringRef , ArrayRef<Metadata *> DwarfOps, |
252 | StorageType Storage, bool ShouldCreate = true) { |
253 | return getImpl(Context, Tag, Header: getCanonicalMDString(Context, S: Header), |
254 | DwarfOps, Storage, ShouldCreate); |
255 | } |
256 | |
257 | static GenericDINode *getImpl(LLVMContext &Context, unsigned Tag, |
258 | MDString *, ArrayRef<Metadata *> DwarfOps, |
259 | StorageType Storage, bool ShouldCreate = true); |
260 | |
261 | TempGenericDINode cloneImpl() const { |
262 | return getTemporary(Context&: getContext(), Tag: getTag(), Header: getHeader(), |
263 | DwarfOps: SmallVector<Metadata *, 4>(dwarf_operands())); |
264 | } |
265 | |
266 | public: |
267 | unsigned getHash() const { return SubclassData32; } |
268 | |
269 | DEFINE_MDNODE_GET(GenericDINode, |
270 | (unsigned Tag, StringRef , |
271 | ArrayRef<Metadata *> DwarfOps), |
272 | (Tag, Header, DwarfOps)) |
273 | DEFINE_MDNODE_GET(GenericDINode, |
274 | (unsigned Tag, MDString *, |
275 | ArrayRef<Metadata *> DwarfOps), |
276 | (Tag, Header, DwarfOps)) |
277 | |
278 | /// Return a (temporary) clone of this. |
279 | TempGenericDINode clone() const { return cloneImpl(); } |
280 | |
281 | dwarf::Tag getTag() const; |
282 | StringRef () const { return getStringOperand(I: 0); } |
283 | MDString *() const { return getOperandAs<MDString>(I: 0); } |
284 | |
285 | op_iterator dwarf_op_begin() const { return op_begin() + 1; } |
286 | op_iterator dwarf_op_end() const { return op_end(); } |
287 | op_range dwarf_operands() const { |
288 | return op_range(dwarf_op_begin(), dwarf_op_end()); |
289 | } |
290 | |
291 | unsigned getNumDwarfOperands() const { return getNumOperands() - 1; } |
292 | const MDOperand &getDwarfOperand(unsigned I) const { |
293 | return getOperand(I: I + 1); |
294 | } |
295 | void replaceDwarfOperandWith(unsigned I, Metadata *New) { |
296 | replaceOperandWith(I: I + 1, New); |
297 | } |
298 | |
299 | static bool classof(const Metadata *MD) { |
300 | return MD->getMetadataID() == GenericDINodeKind; |
301 | } |
302 | }; |
303 | |
304 | /// Assignment ID. |
305 | /// Used to link stores (as an attachment) and dbg.assigns (as an operand). |
306 | /// DIAssignID metadata is never uniqued as we compare instances using |
307 | /// referential equality (the instance/address is the ID). |
308 | class DIAssignID : public MDNode { |
309 | friend class LLVMContextImpl; |
310 | friend class MDNode; |
311 | |
312 | DIAssignID(LLVMContext &C, StorageType Storage) |
313 | : MDNode(C, DIAssignIDKind, Storage, std::nullopt) {} |
314 | |
315 | ~DIAssignID() { dropAllReferences(); } |
316 | |
317 | static DIAssignID *getImpl(LLVMContext &Context, StorageType Storage, |
318 | bool ShouldCreate = true); |
319 | |
320 | TempDIAssignID cloneImpl() const { return getTemporary(Context&: getContext()); } |
321 | |
322 | public: |
323 | // This node has no operands to replace. |
324 | void replaceOperandWith(unsigned I, Metadata *New) = delete; |
325 | |
326 | SmallVector<DPValue *> getAllDPValueUsers() { |
327 | return Context.getReplaceableUses()->getAllDPValueUsers(); |
328 | } |
329 | |
330 | static DIAssignID *getDistinct(LLVMContext &Context) { |
331 | return getImpl(Context, Storage: Distinct); |
332 | } |
333 | static TempDIAssignID getTemporary(LLVMContext &Context) { |
334 | return TempDIAssignID(getImpl(Context, Storage: Temporary)); |
335 | } |
336 | // NOTE: Do not define get(LLVMContext&) - see class comment. |
337 | |
338 | static bool classof(const Metadata *MD) { |
339 | return MD->getMetadataID() == DIAssignIDKind; |
340 | } |
341 | }; |
342 | |
343 | /// Array subrange. |
344 | /// |
345 | /// TODO: Merge into node for DW_TAG_array_type, which should have a custom |
346 | /// type. |
347 | class DISubrange : public DINode { |
348 | friend class LLVMContextImpl; |
349 | friend class MDNode; |
350 | |
351 | DISubrange(LLVMContext &C, StorageType Storage, ArrayRef<Metadata *> Ops); |
352 | |
353 | ~DISubrange() = default; |
354 | |
355 | static DISubrange *getImpl(LLVMContext &Context, int64_t Count, |
356 | int64_t LowerBound, StorageType Storage, |
357 | bool ShouldCreate = true); |
358 | |
359 | static DISubrange *getImpl(LLVMContext &Context, Metadata *CountNode, |
360 | int64_t LowerBound, StorageType Storage, |
361 | bool ShouldCreate = true); |
362 | |
363 | static DISubrange *getImpl(LLVMContext &Context, Metadata *CountNode, |
364 | Metadata *LowerBound, Metadata *UpperBound, |
365 | Metadata *Stride, StorageType Storage, |
366 | bool ShouldCreate = true); |
367 | |
368 | TempDISubrange cloneImpl() const { |
369 | return getTemporary(Context&: getContext(), CountNode: getRawCountNode(), LowerBound: getRawLowerBound(), |
370 | UpperBound: getRawUpperBound(), Stride: getRawStride()); |
371 | } |
372 | |
373 | public: |
374 | DEFINE_MDNODE_GET(DISubrange, (int64_t Count, int64_t LowerBound = 0), |
375 | (Count, LowerBound)) |
376 | |
377 | DEFINE_MDNODE_GET(DISubrange, (Metadata * CountNode, int64_t LowerBound = 0), |
378 | (CountNode, LowerBound)) |
379 | |
380 | DEFINE_MDNODE_GET(DISubrange, |
381 | (Metadata * CountNode, Metadata *LowerBound, |
382 | Metadata *UpperBound, Metadata *Stride), |
383 | (CountNode, LowerBound, UpperBound, Stride)) |
384 | |
385 | TempDISubrange clone() const { return cloneImpl(); } |
386 | |
387 | Metadata *getRawCountNode() const { return getOperand(I: 0).get(); } |
388 | |
389 | Metadata *getRawLowerBound() const { return getOperand(I: 1).get(); } |
390 | |
391 | Metadata *getRawUpperBound() const { return getOperand(I: 2).get(); } |
392 | |
393 | Metadata *getRawStride() const { return getOperand(I: 3).get(); } |
394 | |
395 | typedef PointerUnion<ConstantInt *, DIVariable *, DIExpression *> BoundType; |
396 | |
397 | BoundType getCount() const; |
398 | |
399 | BoundType getLowerBound() const; |
400 | |
401 | BoundType getUpperBound() const; |
402 | |
403 | BoundType getStride() const; |
404 | |
405 | static bool classof(const Metadata *MD) { |
406 | return MD->getMetadataID() == DISubrangeKind; |
407 | } |
408 | }; |
409 | |
410 | class DIGenericSubrange : public DINode { |
411 | friend class LLVMContextImpl; |
412 | friend class MDNode; |
413 | |
414 | DIGenericSubrange(LLVMContext &C, StorageType Storage, |
415 | ArrayRef<Metadata *> Ops); |
416 | |
417 | ~DIGenericSubrange() = default; |
418 | |
419 | static DIGenericSubrange *getImpl(LLVMContext &Context, Metadata *CountNode, |
420 | Metadata *LowerBound, Metadata *UpperBound, |
421 | Metadata *Stride, StorageType Storage, |
422 | bool ShouldCreate = true); |
423 | |
424 | TempDIGenericSubrange cloneImpl() const { |
425 | return getTemporary(Context&: getContext(), CountNode: getRawCountNode(), LowerBound: getRawLowerBound(), |
426 | UpperBound: getRawUpperBound(), Stride: getRawStride()); |
427 | } |
428 | |
429 | public: |
430 | DEFINE_MDNODE_GET(DIGenericSubrange, |
431 | (Metadata * CountNode, Metadata *LowerBound, |
432 | Metadata *UpperBound, Metadata *Stride), |
433 | (CountNode, LowerBound, UpperBound, Stride)) |
434 | |
435 | TempDIGenericSubrange clone() const { return cloneImpl(); } |
436 | |
437 | Metadata *getRawCountNode() const { return getOperand(I: 0).get(); } |
438 | Metadata *getRawLowerBound() const { return getOperand(I: 1).get(); } |
439 | Metadata *getRawUpperBound() const { return getOperand(I: 2).get(); } |
440 | Metadata *getRawStride() const { return getOperand(I: 3).get(); } |
441 | |
442 | using BoundType = PointerUnion<DIVariable *, DIExpression *>; |
443 | |
444 | BoundType getCount() const; |
445 | BoundType getLowerBound() const; |
446 | BoundType getUpperBound() const; |
447 | BoundType getStride() const; |
448 | |
449 | static bool classof(const Metadata *MD) { |
450 | return MD->getMetadataID() == DIGenericSubrangeKind; |
451 | } |
452 | }; |
453 | |
454 | /// Enumeration value. |
455 | /// |
456 | /// TODO: Add a pointer to the context (DW_TAG_enumeration_type) once that no |
457 | /// longer creates a type cycle. |
458 | class DIEnumerator : public DINode { |
459 | friend class LLVMContextImpl; |
460 | friend class MDNode; |
461 | |
462 | APInt Value; |
463 | DIEnumerator(LLVMContext &C, StorageType Storage, const APInt &Value, |
464 | bool IsUnsigned, ArrayRef<Metadata *> Ops); |
465 | DIEnumerator(LLVMContext &C, StorageType Storage, int64_t Value, |
466 | bool IsUnsigned, ArrayRef<Metadata *> Ops) |
467 | : DIEnumerator(C, Storage, APInt(64, Value, !IsUnsigned), IsUnsigned, |
468 | Ops) {} |
469 | ~DIEnumerator() = default; |
470 | |
471 | static DIEnumerator *getImpl(LLVMContext &Context, const APInt &Value, |
472 | bool IsUnsigned, StringRef Name, |
473 | StorageType Storage, bool ShouldCreate = true) { |
474 | return getImpl(Context, Value, IsUnsigned, |
475 | Name: getCanonicalMDString(Context, S: Name), Storage, ShouldCreate); |
476 | } |
477 | static DIEnumerator *getImpl(LLVMContext &Context, const APInt &Value, |
478 | bool IsUnsigned, MDString *Name, |
479 | StorageType Storage, bool ShouldCreate = true); |
480 | |
481 | TempDIEnumerator cloneImpl() const { |
482 | return getTemporary(Context&: getContext(), Value: getValue(), IsUnsigned: isUnsigned(), Name: getName()); |
483 | } |
484 | |
485 | public: |
486 | DEFINE_MDNODE_GET(DIEnumerator, |
487 | (int64_t Value, bool IsUnsigned, StringRef Name), |
488 | (APInt(64, Value, !IsUnsigned), IsUnsigned, Name)) |
489 | DEFINE_MDNODE_GET(DIEnumerator, |
490 | (int64_t Value, bool IsUnsigned, MDString *Name), |
491 | (APInt(64, Value, !IsUnsigned), IsUnsigned, Name)) |
492 | DEFINE_MDNODE_GET(DIEnumerator, |
493 | (APInt Value, bool IsUnsigned, StringRef Name), |
494 | (Value, IsUnsigned, Name)) |
495 | DEFINE_MDNODE_GET(DIEnumerator, |
496 | (APInt Value, bool IsUnsigned, MDString *Name), |
497 | (Value, IsUnsigned, Name)) |
498 | |
499 | TempDIEnumerator clone() const { return cloneImpl(); } |
500 | |
501 | const APInt &getValue() const { return Value; } |
502 | bool isUnsigned() const { return SubclassData32; } |
503 | StringRef getName() const { return getStringOperand(I: 0); } |
504 | |
505 | MDString *getRawName() const { return getOperandAs<MDString>(I: 0); } |
506 | |
507 | static bool classof(const Metadata *MD) { |
508 | return MD->getMetadataID() == DIEnumeratorKind; |
509 | } |
510 | }; |
511 | |
512 | /// Base class for scope-like contexts. |
513 | /// |
514 | /// Base class for lexical scopes and types (which are also declaration |
515 | /// contexts). |
516 | /// |
517 | /// TODO: Separate the concepts of declaration contexts and lexical scopes. |
518 | class DIScope : public DINode { |
519 | protected: |
520 | DIScope(LLVMContext &C, unsigned ID, StorageType Storage, unsigned Tag, |
521 | ArrayRef<Metadata *> Ops) |
522 | : DINode(C, ID, Storage, Tag, Ops) {} |
523 | ~DIScope() = default; |
524 | |
525 | public: |
526 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
527 | |
528 | inline StringRef getFilename() const; |
529 | inline StringRef getDirectory() const; |
530 | inline std::optional<StringRef> getSource() const; |
531 | |
532 | StringRef getName() const; |
533 | DIScope *getScope() const; |
534 | |
535 | /// Return the raw underlying file. |
536 | /// |
537 | /// A \a DIFile is a \a DIScope, but it doesn't point at a separate file (it |
538 | /// \em is the file). If \c this is an \a DIFile, we need to return \c this. |
539 | /// Otherwise, return the first operand, which is where all other subclasses |
540 | /// store their file pointer. |
541 | Metadata *getRawFile() const { |
542 | return isa<DIFile>(Val: this) ? const_cast<DIScope *>(this) |
543 | : static_cast<Metadata *>(getOperand(I: 0)); |
544 | } |
545 | |
546 | static bool classof(const Metadata *MD) { |
547 | switch (MD->getMetadataID()) { |
548 | default: |
549 | return false; |
550 | case DIBasicTypeKind: |
551 | case DIStringTypeKind: |
552 | case DIDerivedTypeKind: |
553 | case DICompositeTypeKind: |
554 | case DISubroutineTypeKind: |
555 | case DIFileKind: |
556 | case DICompileUnitKind: |
557 | case DISubprogramKind: |
558 | case DILexicalBlockKind: |
559 | case DILexicalBlockFileKind: |
560 | case DINamespaceKind: |
561 | case DICommonBlockKind: |
562 | case DIModuleKind: |
563 | return true; |
564 | } |
565 | } |
566 | }; |
567 | |
568 | /// File. |
569 | /// |
570 | /// TODO: Merge with directory/file node (including users). |
571 | /// TODO: Canonicalize paths on creation. |
572 | class DIFile : public DIScope { |
573 | friend class LLVMContextImpl; |
574 | friend class MDNode; |
575 | |
576 | public: |
577 | /// Which algorithm (e.g. MD5) a checksum was generated with. |
578 | /// |
579 | /// The encoding is explicit because it is used directly in Bitcode. The |
580 | /// value 0 is reserved to indicate the absence of a checksum in Bitcode. |
581 | enum ChecksumKind { |
582 | // The first variant was originally CSK_None, encoded as 0. The new |
583 | // internal representation removes the need for this by wrapping the |
584 | // ChecksumInfo in an Optional, but to preserve Bitcode compatibility the 0 |
585 | // encoding is reserved. |
586 | CSK_MD5 = 1, |
587 | CSK_SHA1 = 2, |
588 | CSK_SHA256 = 3, |
589 | CSK_Last = CSK_SHA256 // Should be last enumeration. |
590 | }; |
591 | |
592 | /// A single checksum, represented by a \a Kind and a \a Value (a string). |
593 | template <typename T> struct ChecksumInfo { |
594 | /// The kind of checksum which \a Value encodes. |
595 | ChecksumKind Kind; |
596 | /// The string value of the checksum. |
597 | T Value; |
598 | |
599 | ChecksumInfo(ChecksumKind Kind, T Value) : Kind(Kind), Value(Value) {} |
600 | ~ChecksumInfo() = default; |
601 | bool operator==(const ChecksumInfo<T> &X) const { |
602 | return Kind == X.Kind && Value == X.Value; |
603 | } |
604 | bool operator!=(const ChecksumInfo<T> &X) const { return !(*this == X); } |
605 | StringRef getKindAsString() const { return getChecksumKindAsString(CSKind: Kind); } |
606 | }; |
607 | |
608 | private: |
609 | std::optional<ChecksumInfo<MDString *>> Checksum; |
610 | /// An optional source. A nullptr means none. |
611 | MDString *Source; |
612 | |
613 | DIFile(LLVMContext &C, StorageType Storage, |
614 | std::optional<ChecksumInfo<MDString *>> CS, MDString *Src, |
615 | ArrayRef<Metadata *> Ops); |
616 | ~DIFile() = default; |
617 | |
618 | static DIFile *getImpl(LLVMContext &Context, StringRef Filename, |
619 | StringRef Directory, |
620 | std::optional<ChecksumInfo<StringRef>> CS, |
621 | std::optional<StringRef> Source, StorageType Storage, |
622 | bool ShouldCreate = true) { |
623 | std::optional<ChecksumInfo<MDString *>> MDChecksum; |
624 | if (CS) |
625 | MDChecksum.emplace(args&: CS->Kind, args: getCanonicalMDString(Context, S: CS->Value)); |
626 | return getImpl(Context, Filename: getCanonicalMDString(Context, S: Filename), |
627 | Directory: getCanonicalMDString(Context, S: Directory), CS: MDChecksum, |
628 | Source: Source ? MDString::get(Context, Str: *Source) : nullptr, Storage, |
629 | ShouldCreate); |
630 | } |
631 | static DIFile *getImpl(LLVMContext &Context, MDString *Filename, |
632 | MDString *Directory, |
633 | std::optional<ChecksumInfo<MDString *>> CS, |
634 | MDString *Source, StorageType Storage, |
635 | bool ShouldCreate = true); |
636 | |
637 | TempDIFile cloneImpl() const { |
638 | return getTemporary(Context&: getContext(), Filename: getFilename(), Directory: getDirectory(), |
639 | CS: getChecksum(), Source: getSource()); |
640 | } |
641 | |
642 | public: |
643 | DEFINE_MDNODE_GET(DIFile, |
644 | (StringRef Filename, StringRef Directory, |
645 | std::optional<ChecksumInfo<StringRef>> CS = std::nullopt, |
646 | std::optional<StringRef> Source = std::nullopt), |
647 | (Filename, Directory, CS, Source)) |
648 | DEFINE_MDNODE_GET(DIFile, |
649 | (MDString * Filename, MDString *Directory, |
650 | std::optional<ChecksumInfo<MDString *>> CS = std::nullopt, |
651 | MDString *Source = nullptr), |
652 | (Filename, Directory, CS, Source)) |
653 | |
654 | TempDIFile clone() const { return cloneImpl(); } |
655 | |
656 | StringRef getFilename() const { return getStringOperand(I: 0); } |
657 | StringRef getDirectory() const { return getStringOperand(I: 1); } |
658 | std::optional<ChecksumInfo<StringRef>> getChecksum() const { |
659 | std::optional<ChecksumInfo<StringRef>> StringRefChecksum; |
660 | if (Checksum) |
661 | StringRefChecksum.emplace(args: Checksum->Kind, args: Checksum->Value->getString()); |
662 | return StringRefChecksum; |
663 | } |
664 | std::optional<StringRef> getSource() const { |
665 | return Source ? std::optional<StringRef>(Source->getString()) |
666 | : std::nullopt; |
667 | } |
668 | |
669 | MDString *getRawFilename() const { return getOperandAs<MDString>(I: 0); } |
670 | MDString *getRawDirectory() const { return getOperandAs<MDString>(I: 1); } |
671 | std::optional<ChecksumInfo<MDString *>> getRawChecksum() const { |
672 | return Checksum; |
673 | } |
674 | MDString *getRawSource() const { return Source; } |
675 | |
676 | static StringRef getChecksumKindAsString(ChecksumKind CSKind); |
677 | static std::optional<ChecksumKind> getChecksumKind(StringRef CSKindStr); |
678 | |
679 | static bool classof(const Metadata *MD) { |
680 | return MD->getMetadataID() == DIFileKind; |
681 | } |
682 | }; |
683 | |
684 | StringRef DIScope::getFilename() const { |
685 | if (auto *F = getFile()) |
686 | return F->getFilename(); |
687 | return "" ; |
688 | } |
689 | |
690 | StringRef DIScope::getDirectory() const { |
691 | if (auto *F = getFile()) |
692 | return F->getDirectory(); |
693 | return "" ; |
694 | } |
695 | |
696 | std::optional<StringRef> DIScope::getSource() const { |
697 | if (auto *F = getFile()) |
698 | return F->getSource(); |
699 | return std::nullopt; |
700 | } |
701 | |
702 | /// Base class for types. |
703 | /// |
704 | /// TODO: Remove the hardcoded name and context, since many types don't use |
705 | /// them. |
706 | /// TODO: Split up flags. |
707 | /// |
708 | /// Uses the SubclassData32 Metadata slot. |
709 | class DIType : public DIScope { |
710 | unsigned Line; |
711 | DIFlags Flags; |
712 | uint64_t SizeInBits; |
713 | uint64_t OffsetInBits; |
714 | |
715 | protected: |
716 | DIType(LLVMContext &C, unsigned ID, StorageType Storage, unsigned Tag, |
717 | unsigned Line, uint64_t SizeInBits, uint32_t AlignInBits, |
718 | uint64_t OffsetInBits, DIFlags Flags, ArrayRef<Metadata *> Ops) |
719 | : DIScope(C, ID, Storage, Tag, Ops) { |
720 | init(Line, SizeInBits, AlignInBits, OffsetInBits, Flags); |
721 | } |
722 | ~DIType() = default; |
723 | |
724 | void init(unsigned Line, uint64_t SizeInBits, uint32_t AlignInBits, |
725 | uint64_t OffsetInBits, DIFlags Flags) { |
726 | this->Line = Line; |
727 | this->Flags = Flags; |
728 | this->SizeInBits = SizeInBits; |
729 | this->SubclassData32 = AlignInBits; |
730 | this->OffsetInBits = OffsetInBits; |
731 | } |
732 | |
733 | /// Change fields in place. |
734 | void mutate(unsigned Tag, unsigned Line, uint64_t SizeInBits, |
735 | uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags) { |
736 | assert(isDistinct() && "Only distinct nodes can mutate" ); |
737 | setTag(Tag); |
738 | init(Line, SizeInBits, AlignInBits, OffsetInBits, Flags); |
739 | } |
740 | |
741 | public: |
742 | TempDIType clone() const { |
743 | return TempDIType(cast<DIType>(Val: MDNode::clone().release())); |
744 | } |
745 | |
746 | unsigned getLine() const { return Line; } |
747 | uint64_t getSizeInBits() const { return SizeInBits; } |
748 | uint32_t getAlignInBits() const { return SubclassData32; } |
749 | uint32_t getAlignInBytes() const { return getAlignInBits() / CHAR_BIT; } |
750 | uint64_t getOffsetInBits() const { return OffsetInBits; } |
751 | DIFlags getFlags() const { return Flags; } |
752 | |
753 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
754 | StringRef getName() const { return getStringOperand(I: 2); } |
755 | |
756 | Metadata *getRawScope() const { return getOperand(I: 1); } |
757 | MDString *getRawName() const { return getOperandAs<MDString>(I: 2); } |
758 | |
759 | /// Returns a new temporary DIType with updated Flags |
760 | TempDIType cloneWithFlags(DIFlags NewFlags) const { |
761 | auto NewTy = clone(); |
762 | NewTy->Flags = NewFlags; |
763 | return NewTy; |
764 | } |
765 | |
766 | bool isPrivate() const { |
767 | return (getFlags() & FlagAccessibility) == FlagPrivate; |
768 | } |
769 | bool isProtected() const { |
770 | return (getFlags() & FlagAccessibility) == FlagProtected; |
771 | } |
772 | bool isPublic() const { |
773 | return (getFlags() & FlagAccessibility) == FlagPublic; |
774 | } |
775 | bool isForwardDecl() const { return getFlags() & FlagFwdDecl; } |
776 | bool isAppleBlockExtension() const { return getFlags() & FlagAppleBlock; } |
777 | bool isVirtual() const { return getFlags() & FlagVirtual; } |
778 | bool isArtificial() const { return getFlags() & FlagArtificial; } |
779 | bool isObjectPointer() const { return getFlags() & FlagObjectPointer; } |
780 | bool isObjcClassComplete() const { |
781 | return getFlags() & FlagObjcClassComplete; |
782 | } |
783 | bool isVector() const { return getFlags() & FlagVector; } |
784 | bool isBitField() const { return getFlags() & FlagBitField; } |
785 | bool isStaticMember() const { return getFlags() & FlagStaticMember; } |
786 | bool isLValueReference() const { return getFlags() & FlagLValueReference; } |
787 | bool isRValueReference() const { return getFlags() & FlagRValueReference; } |
788 | bool isTypePassByValue() const { return getFlags() & FlagTypePassByValue; } |
789 | bool isTypePassByReference() const { |
790 | return getFlags() & FlagTypePassByReference; |
791 | } |
792 | bool isBigEndian() const { return getFlags() & FlagBigEndian; } |
793 | bool isLittleEndian() const { return getFlags() & FlagLittleEndian; } |
794 | bool getExportSymbols() const { return getFlags() & FlagExportSymbols; } |
795 | |
796 | static bool classof(const Metadata *MD) { |
797 | switch (MD->getMetadataID()) { |
798 | default: |
799 | return false; |
800 | case DIBasicTypeKind: |
801 | case DIStringTypeKind: |
802 | case DIDerivedTypeKind: |
803 | case DICompositeTypeKind: |
804 | case DISubroutineTypeKind: |
805 | return true; |
806 | } |
807 | } |
808 | }; |
809 | |
810 | /// Basic type, like 'int' or 'float'. |
811 | /// |
812 | /// TODO: Split out DW_TAG_unspecified_type. |
813 | /// TODO: Drop unused accessors. |
814 | class DIBasicType : public DIType { |
815 | friend class LLVMContextImpl; |
816 | friend class MDNode; |
817 | |
818 | unsigned Encoding; |
819 | |
820 | DIBasicType(LLVMContext &C, StorageType Storage, unsigned Tag, |
821 | uint64_t SizeInBits, uint32_t AlignInBits, unsigned Encoding, |
822 | DIFlags Flags, ArrayRef<Metadata *> Ops) |
823 | : DIType(C, DIBasicTypeKind, Storage, Tag, 0, SizeInBits, AlignInBits, 0, |
824 | Flags, Ops), |
825 | Encoding(Encoding) {} |
826 | ~DIBasicType() = default; |
827 | |
828 | static DIBasicType *getImpl(LLVMContext &Context, unsigned Tag, |
829 | StringRef Name, uint64_t SizeInBits, |
830 | uint32_t AlignInBits, unsigned Encoding, |
831 | DIFlags Flags, StorageType Storage, |
832 | bool ShouldCreate = true) { |
833 | return getImpl(Context, Tag, Name: getCanonicalMDString(Context, S: Name), |
834 | SizeInBits, AlignInBits, Encoding, Flags, Storage, |
835 | ShouldCreate); |
836 | } |
837 | static DIBasicType *getImpl(LLVMContext &Context, unsigned Tag, |
838 | MDString *Name, uint64_t SizeInBits, |
839 | uint32_t AlignInBits, unsigned Encoding, |
840 | DIFlags Flags, StorageType Storage, |
841 | bool ShouldCreate = true); |
842 | |
843 | TempDIBasicType cloneImpl() const { |
844 | return getTemporary(Context&: getContext(), Tag: getTag(), Name: getName(), SizeInBits: getSizeInBits(), |
845 | AlignInBits: getAlignInBits(), Encoding: getEncoding(), Flags: getFlags()); |
846 | } |
847 | |
848 | public: |
849 | DEFINE_MDNODE_GET(DIBasicType, (unsigned Tag, StringRef Name), |
850 | (Tag, Name, 0, 0, 0, FlagZero)) |
851 | DEFINE_MDNODE_GET(DIBasicType, |
852 | (unsigned Tag, StringRef Name, uint64_t SizeInBits), |
853 | (Tag, Name, SizeInBits, 0, 0, FlagZero)) |
854 | DEFINE_MDNODE_GET(DIBasicType, |
855 | (unsigned Tag, MDString *Name, uint64_t SizeInBits), |
856 | (Tag, Name, SizeInBits, 0, 0, FlagZero)) |
857 | DEFINE_MDNODE_GET(DIBasicType, |
858 | (unsigned Tag, StringRef Name, uint64_t SizeInBits, |
859 | uint32_t AlignInBits, unsigned Encoding, DIFlags Flags), |
860 | (Tag, Name, SizeInBits, AlignInBits, Encoding, Flags)) |
861 | DEFINE_MDNODE_GET(DIBasicType, |
862 | (unsigned Tag, MDString *Name, uint64_t SizeInBits, |
863 | uint32_t AlignInBits, unsigned Encoding, DIFlags Flags), |
864 | (Tag, Name, SizeInBits, AlignInBits, Encoding, Flags)) |
865 | |
866 | TempDIBasicType clone() const { return cloneImpl(); } |
867 | |
868 | unsigned getEncoding() const { return Encoding; } |
869 | |
870 | enum class Signedness { Signed, Unsigned }; |
871 | |
872 | /// Return the signedness of this type, or std::nullopt if this type is |
873 | /// neither signed nor unsigned. |
874 | std::optional<Signedness> getSignedness() const; |
875 | |
876 | static bool classof(const Metadata *MD) { |
877 | return MD->getMetadataID() == DIBasicTypeKind; |
878 | } |
879 | }; |
880 | |
881 | /// String type, Fortran CHARACTER(n) |
882 | class DIStringType : public DIType { |
883 | friend class LLVMContextImpl; |
884 | friend class MDNode; |
885 | |
886 | unsigned Encoding; |
887 | |
888 | DIStringType(LLVMContext &C, StorageType Storage, unsigned Tag, |
889 | uint64_t SizeInBits, uint32_t AlignInBits, unsigned Encoding, |
890 | ArrayRef<Metadata *> Ops) |
891 | : DIType(C, DIStringTypeKind, Storage, Tag, 0, SizeInBits, AlignInBits, 0, |
892 | FlagZero, Ops), |
893 | Encoding(Encoding) {} |
894 | ~DIStringType() = default; |
895 | |
896 | static DIStringType *getImpl(LLVMContext &Context, unsigned Tag, |
897 | StringRef Name, Metadata *StringLength, |
898 | Metadata *StrLenExp, Metadata *StrLocationExp, |
899 | uint64_t SizeInBits, uint32_t AlignInBits, |
900 | unsigned Encoding, StorageType Storage, |
901 | bool ShouldCreate = true) { |
902 | return getImpl(Context, Tag, Name: getCanonicalMDString(Context, S: Name), |
903 | StringLength, StrLenExp, StrLocationExp, SizeInBits, |
904 | AlignInBits, Encoding, Storage, ShouldCreate); |
905 | } |
906 | static DIStringType *getImpl(LLVMContext &Context, unsigned Tag, |
907 | MDString *Name, Metadata *StringLength, |
908 | Metadata *StrLenExp, Metadata *StrLocationExp, |
909 | uint64_t SizeInBits, uint32_t AlignInBits, |
910 | unsigned Encoding, StorageType Storage, |
911 | bool ShouldCreate = true); |
912 | |
913 | TempDIStringType cloneImpl() const { |
914 | return getTemporary(Context&: getContext(), Tag: getTag(), Name: getRawName(), |
915 | StringLength: getRawStringLength(), StringLengthExp: getRawStringLengthExp(), |
916 | StringLocationExp: getRawStringLocationExp(), SizeInBits: getSizeInBits(), |
917 | AlignInBits: getAlignInBits(), Encoding: getEncoding()); |
918 | } |
919 | |
920 | public: |
921 | DEFINE_MDNODE_GET(DIStringType, |
922 | (unsigned Tag, StringRef Name, uint64_t SizeInBits, |
923 | uint32_t AlignInBits), |
924 | (Tag, Name, nullptr, nullptr, nullptr, SizeInBits, |
925 | AlignInBits, 0)) |
926 | DEFINE_MDNODE_GET(DIStringType, |
927 | (unsigned Tag, MDString *Name, Metadata *StringLength, |
928 | Metadata *StringLengthExp, Metadata *StringLocationExp, |
929 | uint64_t SizeInBits, uint32_t AlignInBits, |
930 | unsigned Encoding), |
931 | (Tag, Name, StringLength, StringLengthExp, |
932 | StringLocationExp, SizeInBits, AlignInBits, Encoding)) |
933 | DEFINE_MDNODE_GET(DIStringType, |
934 | (unsigned Tag, StringRef Name, Metadata *StringLength, |
935 | Metadata *StringLengthExp, Metadata *StringLocationExp, |
936 | uint64_t SizeInBits, uint32_t AlignInBits, |
937 | unsigned Encoding), |
938 | (Tag, Name, StringLength, StringLengthExp, |
939 | StringLocationExp, SizeInBits, AlignInBits, Encoding)) |
940 | |
941 | TempDIStringType clone() const { return cloneImpl(); } |
942 | |
943 | static bool classof(const Metadata *MD) { |
944 | return MD->getMetadataID() == DIStringTypeKind; |
945 | } |
946 | |
947 | DIVariable *getStringLength() const { |
948 | return cast_or_null<DIVariable>(Val: getRawStringLength()); |
949 | } |
950 | |
951 | DIExpression *getStringLengthExp() const { |
952 | return cast_or_null<DIExpression>(Val: getRawStringLengthExp()); |
953 | } |
954 | |
955 | DIExpression *getStringLocationExp() const { |
956 | return cast_or_null<DIExpression>(Val: getRawStringLocationExp()); |
957 | } |
958 | |
959 | unsigned getEncoding() const { return Encoding; } |
960 | |
961 | Metadata *getRawStringLength() const { return getOperand(I: 3); } |
962 | |
963 | Metadata *getRawStringLengthExp() const { return getOperand(I: 4); } |
964 | |
965 | Metadata *getRawStringLocationExp() const { return getOperand(I: 5); } |
966 | }; |
967 | |
968 | /// Derived types. |
969 | /// |
970 | /// This includes qualified types, pointers, references, friends, typedefs, and |
971 | /// class members. |
972 | /// |
973 | /// TODO: Split out members (inheritance, fields, methods, etc.). |
974 | class DIDerivedType : public DIType { |
975 | friend class LLVMContextImpl; |
976 | friend class MDNode; |
977 | |
978 | /// The DWARF address space of the memory pointed to or referenced by a |
979 | /// pointer or reference type respectively. |
980 | std::optional<unsigned> DWARFAddressSpace; |
981 | |
982 | DIDerivedType(LLVMContext &C, StorageType Storage, unsigned Tag, |
983 | unsigned Line, uint64_t SizeInBits, uint32_t AlignInBits, |
984 | uint64_t OffsetInBits, |
985 | std::optional<unsigned> DWARFAddressSpace, DIFlags Flags, |
986 | ArrayRef<Metadata *> Ops) |
987 | : DIType(C, DIDerivedTypeKind, Storage, Tag, Line, SizeInBits, |
988 | AlignInBits, OffsetInBits, Flags, Ops), |
989 | DWARFAddressSpace(DWARFAddressSpace) {} |
990 | ~DIDerivedType() = default; |
991 | static DIDerivedType * |
992 | getImpl(LLVMContext &Context, unsigned Tag, StringRef Name, DIFile *File, |
993 | unsigned Line, DIScope *Scope, DIType *BaseType, uint64_t SizeInBits, |
994 | uint32_t AlignInBits, uint64_t OffsetInBits, |
995 | std::optional<unsigned> DWARFAddressSpace, DIFlags Flags, |
996 | Metadata *, DINodeArray Annotations, StorageType Storage, |
997 | bool ShouldCreate = true) { |
998 | return getImpl(Context, Tag, Name: getCanonicalMDString(Context, S: Name), File, |
999 | Line, Scope, BaseType, SizeInBits, AlignInBits, OffsetInBits, |
1000 | DWARFAddressSpace, Flags, ExtraData, Annotations: Annotations.get(), |
1001 | Storage, ShouldCreate); |
1002 | } |
1003 | static DIDerivedType * |
1004 | getImpl(LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File, |
1005 | unsigned Line, Metadata *Scope, Metadata *BaseType, |
1006 | uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits, |
1007 | std::optional<unsigned> DWARFAddressSpace, DIFlags Flags, |
1008 | Metadata *, Metadata *Annotations, StorageType Storage, |
1009 | bool ShouldCreate = true); |
1010 | |
1011 | TempDIDerivedType cloneImpl() const { |
1012 | return getTemporary( |
1013 | Context&: getContext(), Tag: getTag(), Name: getName(), File: getFile(), Line: getLine(), Scope: getScope(), |
1014 | BaseType: getBaseType(), SizeInBits: getSizeInBits(), AlignInBits: getAlignInBits(), OffsetInBits: getOffsetInBits(), |
1015 | DWARFAddressSpace: getDWARFAddressSpace(), Flags: getFlags(), ExtraData: getExtraData(), Annotations: getAnnotations()); |
1016 | } |
1017 | |
1018 | public: |
1019 | DEFINE_MDNODE_GET( |
1020 | DIDerivedType, |
1021 | (unsigned Tag, MDString *Name, Metadata *File, unsigned Line, |
1022 | Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits, |
1023 | uint32_t AlignInBits, uint64_t OffsetInBits, |
1024 | std::optional<unsigned> DWARFAddressSpace, DIFlags Flags, |
1025 | Metadata * = nullptr, Metadata *Annotations = nullptr), |
1026 | (Tag, Name, File, Line, Scope, BaseType, SizeInBits, AlignInBits, |
1027 | OffsetInBits, DWARFAddressSpace, Flags, ExtraData, Annotations)) |
1028 | DEFINE_MDNODE_GET(DIDerivedType, |
1029 | (unsigned Tag, StringRef Name, DIFile *File, unsigned Line, |
1030 | DIScope *Scope, DIType *BaseType, uint64_t SizeInBits, |
1031 | uint32_t AlignInBits, uint64_t OffsetInBits, |
1032 | std::optional<unsigned> DWARFAddressSpace, DIFlags Flags, |
1033 | Metadata * = nullptr, |
1034 | DINodeArray Annotations = nullptr), |
1035 | (Tag, Name, File, Line, Scope, BaseType, SizeInBits, |
1036 | AlignInBits, OffsetInBits, DWARFAddressSpace, Flags, |
1037 | ExtraData, Annotations)) |
1038 | |
1039 | TempDIDerivedType clone() const { return cloneImpl(); } |
1040 | |
1041 | /// Get the base type this is derived from. |
1042 | DIType *getBaseType() const { return cast_or_null<DIType>(Val: getRawBaseType()); } |
1043 | Metadata *getRawBaseType() const { return getOperand(I: 3); } |
1044 | |
1045 | /// \returns The DWARF address space of the memory pointed to or referenced by |
1046 | /// a pointer or reference type respectively. |
1047 | std::optional<unsigned> getDWARFAddressSpace() const { |
1048 | return DWARFAddressSpace; |
1049 | } |
1050 | |
1051 | /// Get extra data associated with this derived type. |
1052 | /// |
1053 | /// Class type for pointer-to-members, objective-c property node for ivars, |
1054 | /// global constant wrapper for static members, or virtual base pointer offset |
1055 | /// for inheritance. |
1056 | /// |
1057 | /// TODO: Separate out types that need this extra operand: pointer-to-member |
1058 | /// types and member fields (static members and ivars). |
1059 | Metadata *() const { return getRawExtraData(); } |
1060 | Metadata *() const { return getOperand(I: 4); } |
1061 | |
1062 | /// Get annotations associated with this derived type. |
1063 | DINodeArray getAnnotations() const { |
1064 | return cast_or_null<MDTuple>(Val: getRawAnnotations()); |
1065 | } |
1066 | Metadata *getRawAnnotations() const { return getOperand(I: 5); } |
1067 | |
1068 | /// Get casted version of extra data. |
1069 | /// @{ |
1070 | DIType *getClassType() const; |
1071 | |
1072 | DIObjCProperty *getObjCProperty() const { |
1073 | return dyn_cast_or_null<DIObjCProperty>(Val: getExtraData()); |
1074 | } |
1075 | |
1076 | uint32_t getVBPtrOffset() const; |
1077 | |
1078 | Constant *getStorageOffsetInBits() const; |
1079 | |
1080 | Constant *getConstant() const; |
1081 | |
1082 | Constant *getDiscriminantValue() const; |
1083 | /// @} |
1084 | |
1085 | static bool classof(const Metadata *MD) { |
1086 | return MD->getMetadataID() == DIDerivedTypeKind; |
1087 | } |
1088 | }; |
1089 | |
1090 | /// Composite types. |
1091 | /// |
1092 | /// TODO: Detach from DerivedTypeBase (split out MDEnumType?). |
1093 | /// TODO: Create a custom, unrelated node for DW_TAG_array_type. |
1094 | class DICompositeType : public DIType { |
1095 | friend class LLVMContextImpl; |
1096 | friend class MDNode; |
1097 | |
1098 | unsigned RuntimeLang; |
1099 | |
1100 | DICompositeType(LLVMContext &C, StorageType Storage, unsigned Tag, |
1101 | unsigned Line, unsigned RuntimeLang, uint64_t SizeInBits, |
1102 | uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags, |
1103 | ArrayRef<Metadata *> Ops) |
1104 | : DIType(C, DICompositeTypeKind, Storage, Tag, Line, SizeInBits, |
1105 | AlignInBits, OffsetInBits, Flags, Ops), |
1106 | RuntimeLang(RuntimeLang) {} |
1107 | ~DICompositeType() = default; |
1108 | |
1109 | /// Change fields in place. |
1110 | void mutate(unsigned Tag, unsigned Line, unsigned RuntimeLang, |
1111 | uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits, |
1112 | DIFlags Flags) { |
1113 | assert(isDistinct() && "Only distinct nodes can mutate" ); |
1114 | assert(getRawIdentifier() && "Only ODR-uniqued nodes should mutate" ); |
1115 | this->RuntimeLang = RuntimeLang; |
1116 | DIType::mutate(Tag, Line, SizeInBits, AlignInBits, OffsetInBits, Flags); |
1117 | } |
1118 | |
1119 | static DICompositeType * |
1120 | getImpl(LLVMContext &Context, unsigned Tag, StringRef Name, Metadata *File, |
1121 | unsigned Line, DIScope *Scope, DIType *BaseType, uint64_t SizeInBits, |
1122 | uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags, |
1123 | DINodeArray Elements, unsigned RuntimeLang, DIType *VTableHolder, |
1124 | DITemplateParameterArray TemplateParams, StringRef Identifier, |
1125 | DIDerivedType *Discriminator, Metadata *DataLocation, |
1126 | Metadata *Associated, Metadata *Allocated, Metadata *Rank, |
1127 | DINodeArray Annotations, StorageType Storage, |
1128 | bool ShouldCreate = true) { |
1129 | return getImpl( |
1130 | Context, Tag, Name: getCanonicalMDString(Context, S: Name), File, Line, Scope, |
1131 | BaseType, SizeInBits, AlignInBits, OffsetInBits, Flags, Elements: Elements.get(), |
1132 | RuntimeLang, VTableHolder, TemplateParams: TemplateParams.get(), |
1133 | Identifier: getCanonicalMDString(Context, S: Identifier), Discriminator, DataLocation, |
1134 | Associated, Allocated, Rank, Annotations: Annotations.get(), Storage, ShouldCreate); |
1135 | } |
1136 | static DICompositeType * |
1137 | getImpl(LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *File, |
1138 | unsigned Line, Metadata *Scope, Metadata *BaseType, |
1139 | uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits, |
1140 | DIFlags Flags, Metadata *Elements, unsigned RuntimeLang, |
1141 | Metadata *VTableHolder, Metadata *TemplateParams, |
1142 | MDString *Identifier, Metadata *Discriminator, Metadata *DataLocation, |
1143 | Metadata *Associated, Metadata *Allocated, Metadata *Rank, |
1144 | Metadata *Annotations, StorageType Storage, bool ShouldCreate = true); |
1145 | |
1146 | TempDICompositeType cloneImpl() const { |
1147 | return getTemporary( |
1148 | Context&: getContext(), Tag: getTag(), Name: getName(), File: getFile(), Line: getLine(), Scope: getScope(), |
1149 | BaseType: getBaseType(), SizeInBits: getSizeInBits(), AlignInBits: getAlignInBits(), OffsetInBits: getOffsetInBits(), |
1150 | Flags: getFlags(), Elements: getElements(), RuntimeLang: getRuntimeLang(), VTableHolder: getVTableHolder(), |
1151 | TemplateParams: getTemplateParams(), Identifier: getIdentifier(), Discriminator: getDiscriminator(), |
1152 | DataLocation: getRawDataLocation(), Associated: getRawAssociated(), Allocated: getRawAllocated(), |
1153 | Rank: getRawRank(), Annotations: getAnnotations()); |
1154 | } |
1155 | |
1156 | public: |
1157 | DEFINE_MDNODE_GET( |
1158 | DICompositeType, |
1159 | (unsigned Tag, StringRef Name, DIFile *File, unsigned Line, |
1160 | DIScope *Scope, DIType *BaseType, uint64_t SizeInBits, |
1161 | uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags, |
1162 | DINodeArray Elements, unsigned RuntimeLang, DIType *VTableHolder, |
1163 | DITemplateParameterArray TemplateParams = nullptr, |
1164 | StringRef Identifier = "" , DIDerivedType *Discriminator = nullptr, |
1165 | Metadata *DataLocation = nullptr, Metadata *Associated = nullptr, |
1166 | Metadata *Allocated = nullptr, Metadata *Rank = nullptr, |
1167 | DINodeArray Annotations = nullptr), |
1168 | (Tag, Name, File, Line, Scope, BaseType, SizeInBits, AlignInBits, |
1169 | OffsetInBits, Flags, Elements, RuntimeLang, VTableHolder, TemplateParams, |
1170 | Identifier, Discriminator, DataLocation, Associated, Allocated, Rank, |
1171 | Annotations)) |
1172 | DEFINE_MDNODE_GET( |
1173 | DICompositeType, |
1174 | (unsigned Tag, MDString *Name, Metadata *File, unsigned Line, |
1175 | Metadata *Scope, Metadata *BaseType, uint64_t SizeInBits, |
1176 | uint32_t AlignInBits, uint64_t OffsetInBits, DIFlags Flags, |
1177 | Metadata *Elements, unsigned RuntimeLang, Metadata *VTableHolder, |
1178 | Metadata *TemplateParams = nullptr, MDString *Identifier = nullptr, |
1179 | Metadata *Discriminator = nullptr, Metadata *DataLocation = nullptr, |
1180 | Metadata *Associated = nullptr, Metadata *Allocated = nullptr, |
1181 | Metadata *Rank = nullptr, Metadata *Annotations = nullptr), |
1182 | (Tag, Name, File, Line, Scope, BaseType, SizeInBits, AlignInBits, |
1183 | OffsetInBits, Flags, Elements, RuntimeLang, VTableHolder, TemplateParams, |
1184 | Identifier, Discriminator, DataLocation, Associated, Allocated, Rank, |
1185 | Annotations)) |
1186 | |
1187 | TempDICompositeType clone() const { return cloneImpl(); } |
1188 | |
1189 | /// Get a DICompositeType with the given ODR identifier. |
1190 | /// |
1191 | /// If \a LLVMContext::isODRUniquingDebugTypes(), gets the mapped |
1192 | /// DICompositeType for the given ODR \c Identifier. If none exists, creates |
1193 | /// a new node. |
1194 | /// |
1195 | /// Else, returns \c nullptr. |
1196 | static DICompositeType * |
1197 | getODRType(LLVMContext &Context, MDString &Identifier, unsigned Tag, |
1198 | MDString *Name, Metadata *File, unsigned Line, Metadata *Scope, |
1199 | Metadata *BaseType, uint64_t SizeInBits, uint32_t AlignInBits, |
1200 | uint64_t OffsetInBits, DIFlags Flags, Metadata *Elements, |
1201 | unsigned RuntimeLang, Metadata *VTableHolder, |
1202 | Metadata *TemplateParams, Metadata *Discriminator, |
1203 | Metadata *DataLocation, Metadata *Associated, Metadata *Allocated, |
1204 | Metadata *Rank, Metadata *Annotations); |
1205 | static DICompositeType *getODRTypeIfExists(LLVMContext &Context, |
1206 | MDString &Identifier); |
1207 | |
1208 | /// Build a DICompositeType with the given ODR identifier. |
1209 | /// |
1210 | /// Looks up the mapped DICompositeType for the given ODR \c Identifier. If |
1211 | /// it doesn't exist, creates a new one. If it does exist and \a |
1212 | /// isForwardDecl(), and the new arguments would be a definition, mutates the |
1213 | /// the type in place. In either case, returns the type. |
1214 | /// |
1215 | /// If not \a LLVMContext::isODRUniquingDebugTypes(), this function returns |
1216 | /// nullptr. |
1217 | static DICompositeType * |
1218 | buildODRType(LLVMContext &Context, MDString &Identifier, unsigned Tag, |
1219 | MDString *Name, Metadata *File, unsigned Line, Metadata *Scope, |
1220 | Metadata *BaseType, uint64_t SizeInBits, uint32_t AlignInBits, |
1221 | uint64_t OffsetInBits, DIFlags Flags, Metadata *Elements, |
1222 | unsigned RuntimeLang, Metadata *VTableHolder, |
1223 | Metadata *TemplateParams, Metadata *Discriminator, |
1224 | Metadata *DataLocation, Metadata *Associated, |
1225 | Metadata *Allocated, Metadata *Rank, Metadata *Annotations); |
1226 | |
1227 | DIType *getBaseType() const { return cast_or_null<DIType>(Val: getRawBaseType()); } |
1228 | DINodeArray getElements() const { |
1229 | return cast_or_null<MDTuple>(Val: getRawElements()); |
1230 | } |
1231 | DIType *getVTableHolder() const { |
1232 | return cast_or_null<DIType>(Val: getRawVTableHolder()); |
1233 | } |
1234 | DITemplateParameterArray getTemplateParams() const { |
1235 | return cast_or_null<MDTuple>(Val: getRawTemplateParams()); |
1236 | } |
1237 | StringRef getIdentifier() const { return getStringOperand(I: 7); } |
1238 | unsigned getRuntimeLang() const { return RuntimeLang; } |
1239 | |
1240 | Metadata *getRawBaseType() const { return getOperand(I: 3); } |
1241 | Metadata *getRawElements() const { return getOperand(I: 4); } |
1242 | Metadata *getRawVTableHolder() const { return getOperand(I: 5); } |
1243 | Metadata *getRawTemplateParams() const { return getOperand(I: 6); } |
1244 | MDString *getRawIdentifier() const { return getOperandAs<MDString>(I: 7); } |
1245 | Metadata *getRawDiscriminator() const { return getOperand(I: 8); } |
1246 | DIDerivedType *getDiscriminator() const { |
1247 | return getOperandAs<DIDerivedType>(I: 8); |
1248 | } |
1249 | Metadata *getRawDataLocation() const { return getOperand(I: 9); } |
1250 | DIVariable *getDataLocation() const { |
1251 | return dyn_cast_or_null<DIVariable>(Val: getRawDataLocation()); |
1252 | } |
1253 | DIExpression *getDataLocationExp() const { |
1254 | return dyn_cast_or_null<DIExpression>(Val: getRawDataLocation()); |
1255 | } |
1256 | Metadata *getRawAssociated() const { return getOperand(I: 10); } |
1257 | DIVariable *getAssociated() const { |
1258 | return dyn_cast_or_null<DIVariable>(Val: getRawAssociated()); |
1259 | } |
1260 | DIExpression *getAssociatedExp() const { |
1261 | return dyn_cast_or_null<DIExpression>(Val: getRawAssociated()); |
1262 | } |
1263 | Metadata *getRawAllocated() const { return getOperand(I: 11); } |
1264 | DIVariable *getAllocated() const { |
1265 | return dyn_cast_or_null<DIVariable>(Val: getRawAllocated()); |
1266 | } |
1267 | DIExpression *getAllocatedExp() const { |
1268 | return dyn_cast_or_null<DIExpression>(Val: getRawAllocated()); |
1269 | } |
1270 | Metadata *getRawRank() const { return getOperand(I: 12); } |
1271 | ConstantInt *getRankConst() const { |
1272 | if (auto *MD = dyn_cast_or_null<ConstantAsMetadata>(Val: getRawRank())) |
1273 | return dyn_cast_or_null<ConstantInt>(Val: MD->getValue()); |
1274 | return nullptr; |
1275 | } |
1276 | DIExpression *getRankExp() const { |
1277 | return dyn_cast_or_null<DIExpression>(Val: getRawRank()); |
1278 | } |
1279 | |
1280 | Metadata *getRawAnnotations() const { return getOperand(I: 13); } |
1281 | DINodeArray getAnnotations() const { |
1282 | return cast_or_null<MDTuple>(Val: getRawAnnotations()); |
1283 | } |
1284 | |
1285 | /// Replace operands. |
1286 | /// |
1287 | /// If this \a isUniqued() and not \a isResolved(), on a uniquing collision |
1288 | /// this will be RAUW'ed and deleted. Use a \a TrackingMDRef to keep track |
1289 | /// of its movement if necessary. |
1290 | /// @{ |
1291 | void replaceElements(DINodeArray Elements) { |
1292 | #ifndef NDEBUG |
1293 | for (DINode *Op : getElements()) |
1294 | assert(is_contained(Elements->operands(), Op) && |
1295 | "Lost a member during member list replacement" ); |
1296 | #endif |
1297 | replaceOperandWith(I: 4, New: Elements.get()); |
1298 | } |
1299 | |
1300 | void replaceVTableHolder(DIType *VTableHolder) { |
1301 | replaceOperandWith(I: 5, New: VTableHolder); |
1302 | } |
1303 | |
1304 | void replaceTemplateParams(DITemplateParameterArray TemplateParams) { |
1305 | replaceOperandWith(I: 6, New: TemplateParams.get()); |
1306 | } |
1307 | /// @} |
1308 | |
1309 | static bool classof(const Metadata *MD) { |
1310 | return MD->getMetadataID() == DICompositeTypeKind; |
1311 | } |
1312 | }; |
1313 | |
1314 | /// Type array for a subprogram. |
1315 | /// |
1316 | /// TODO: Fold the array of types in directly as operands. |
1317 | class DISubroutineType : public DIType { |
1318 | friend class LLVMContextImpl; |
1319 | friend class MDNode; |
1320 | |
1321 | /// The calling convention used with DW_AT_calling_convention. Actually of |
1322 | /// type dwarf::CallingConvention. |
1323 | uint8_t CC; |
1324 | |
1325 | DISubroutineType(LLVMContext &C, StorageType Storage, DIFlags Flags, |
1326 | uint8_t CC, ArrayRef<Metadata *> Ops); |
1327 | ~DISubroutineType() = default; |
1328 | |
1329 | static DISubroutineType *getImpl(LLVMContext &Context, DIFlags Flags, |
1330 | uint8_t CC, DITypeRefArray TypeArray, |
1331 | StorageType Storage, |
1332 | bool ShouldCreate = true) { |
1333 | return getImpl(Context, Flags, CC, TypeArray: TypeArray.get(), Storage, ShouldCreate); |
1334 | } |
1335 | static DISubroutineType *getImpl(LLVMContext &Context, DIFlags Flags, |
1336 | uint8_t CC, Metadata *TypeArray, |
1337 | StorageType Storage, |
1338 | bool ShouldCreate = true); |
1339 | |
1340 | TempDISubroutineType cloneImpl() const { |
1341 | return getTemporary(Context&: getContext(), Flags: getFlags(), CC: getCC(), TypeArray: getTypeArray()); |
1342 | } |
1343 | |
1344 | public: |
1345 | DEFINE_MDNODE_GET(DISubroutineType, |
1346 | (DIFlags Flags, uint8_t CC, DITypeRefArray TypeArray), |
1347 | (Flags, CC, TypeArray)) |
1348 | DEFINE_MDNODE_GET(DISubroutineType, |
1349 | (DIFlags Flags, uint8_t CC, Metadata *TypeArray), |
1350 | (Flags, CC, TypeArray)) |
1351 | |
1352 | TempDISubroutineType clone() const { return cloneImpl(); } |
1353 | // Returns a new temporary DISubroutineType with updated CC |
1354 | TempDISubroutineType cloneWithCC(uint8_t CC) const { |
1355 | auto NewTy = clone(); |
1356 | NewTy->CC = CC; |
1357 | return NewTy; |
1358 | } |
1359 | |
1360 | uint8_t getCC() const { return CC; } |
1361 | |
1362 | DITypeRefArray getTypeArray() const { |
1363 | return cast_or_null<MDTuple>(Val: getRawTypeArray()); |
1364 | } |
1365 | |
1366 | Metadata *getRawTypeArray() const { return getOperand(I: 3); } |
1367 | |
1368 | static bool classof(const Metadata *MD) { |
1369 | return MD->getMetadataID() == DISubroutineTypeKind; |
1370 | } |
1371 | }; |
1372 | |
1373 | /// Compile unit. |
1374 | class DICompileUnit : public DIScope { |
1375 | friend class LLVMContextImpl; |
1376 | friend class MDNode; |
1377 | |
1378 | public: |
1379 | enum DebugEmissionKind : unsigned { |
1380 | NoDebug = 0, |
1381 | FullDebug, |
1382 | LineTablesOnly, |
1383 | DebugDirectivesOnly, |
1384 | LastEmissionKind = DebugDirectivesOnly |
1385 | }; |
1386 | |
1387 | enum class DebugNameTableKind : unsigned { |
1388 | Default = 0, |
1389 | GNU = 1, |
1390 | None = 2, |
1391 | Apple = 3, |
1392 | LastDebugNameTableKind = Apple |
1393 | }; |
1394 | |
1395 | static std::optional<DebugEmissionKind> getEmissionKind(StringRef Str); |
1396 | static const char *emissionKindString(DebugEmissionKind EK); |
1397 | static std::optional<DebugNameTableKind> getNameTableKind(StringRef Str); |
1398 | static const char *nameTableKindString(DebugNameTableKind PK); |
1399 | |
1400 | private: |
1401 | unsigned SourceLanguage; |
1402 | unsigned RuntimeVersion; |
1403 | uint64_t DWOId; |
1404 | unsigned EmissionKind; |
1405 | unsigned NameTableKind; |
1406 | bool IsOptimized; |
1407 | bool SplitDebugInlining; |
1408 | bool DebugInfoForProfiling; |
1409 | bool RangesBaseAddress; |
1410 | |
1411 | DICompileUnit(LLVMContext &C, StorageType Storage, unsigned SourceLanguage, |
1412 | bool IsOptimized, unsigned RuntimeVersion, |
1413 | unsigned EmissionKind, uint64_t DWOId, bool SplitDebugInlining, |
1414 | bool DebugInfoForProfiling, unsigned NameTableKind, |
1415 | bool RangesBaseAddress, ArrayRef<Metadata *> Ops); |
1416 | ~DICompileUnit() = default; |
1417 | |
1418 | static DICompileUnit * |
1419 | getImpl(LLVMContext &Context, unsigned SourceLanguage, DIFile *File, |
1420 | StringRef Producer, bool IsOptimized, StringRef Flags, |
1421 | unsigned RuntimeVersion, StringRef SplitDebugFilename, |
1422 | unsigned EmissionKind, DICompositeTypeArray EnumTypes, |
1423 | DIScopeArray RetainedTypes, |
1424 | DIGlobalVariableExpressionArray GlobalVariables, |
1425 | DIImportedEntityArray ImportedEntities, DIMacroNodeArray Macros, |
1426 | uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling, |
1427 | unsigned NameTableKind, bool RangesBaseAddress, StringRef SysRoot, |
1428 | StringRef SDK, StorageType Storage, bool ShouldCreate = true) { |
1429 | return getImpl( |
1430 | Context, SourceLanguage, File, Producer: getCanonicalMDString(Context, S: Producer), |
1431 | IsOptimized, Flags: getCanonicalMDString(Context, S: Flags), RuntimeVersion, |
1432 | SplitDebugFilename: getCanonicalMDString(Context, S: SplitDebugFilename), EmissionKind, |
1433 | EnumTypes: EnumTypes.get(), RetainedTypes: RetainedTypes.get(), GlobalVariables: GlobalVariables.get(), |
1434 | ImportedEntities: ImportedEntities.get(), Macros: Macros.get(), DWOId, SplitDebugInlining, |
1435 | DebugInfoForProfiling, NameTableKind, RangesBaseAddress, |
1436 | SysRoot: getCanonicalMDString(Context, S: SysRoot), |
1437 | SDK: getCanonicalMDString(Context, S: SDK), Storage, ShouldCreate); |
1438 | } |
1439 | static DICompileUnit * |
1440 | getImpl(LLVMContext &Context, unsigned SourceLanguage, Metadata *File, |
1441 | MDString *Producer, bool IsOptimized, MDString *Flags, |
1442 | unsigned RuntimeVersion, MDString *SplitDebugFilename, |
1443 | unsigned EmissionKind, Metadata *EnumTypes, Metadata *RetainedTypes, |
1444 | Metadata *GlobalVariables, Metadata *ImportedEntities, |
1445 | Metadata *Macros, uint64_t DWOId, bool SplitDebugInlining, |
1446 | bool DebugInfoForProfiling, unsigned NameTableKind, |
1447 | bool RangesBaseAddress, MDString *SysRoot, MDString *SDK, |
1448 | StorageType Storage, bool ShouldCreate = true); |
1449 | |
1450 | TempDICompileUnit cloneImpl() const { |
1451 | return getTemporary( |
1452 | Context&: getContext(), SourceLanguage: getSourceLanguage(), File: getFile(), Producer: getProducer(), |
1453 | IsOptimized: isOptimized(), Flags: getFlags(), RuntimeVersion: getRuntimeVersion(), SplitDebugFilename: getSplitDebugFilename(), |
1454 | EmissionKind: getEmissionKind(), EnumTypes: getEnumTypes(), RetainedTypes: getRetainedTypes(), |
1455 | GlobalVariables: getGlobalVariables(), ImportedEntities: getImportedEntities(), Macros: getMacros(), DWOId, |
1456 | SplitDebugInlining: getSplitDebugInlining(), DebugInfoForProfiling: getDebugInfoForProfiling(), NameTableKind: getNameTableKind(), |
1457 | RangesBaseAddress: getRangesBaseAddress(), SysRoot: getSysRoot(), SDK: getSDK()); |
1458 | } |
1459 | |
1460 | public: |
1461 | static void get() = delete; |
1462 | static void getIfExists() = delete; |
1463 | |
1464 | DEFINE_MDNODE_GET_DISTINCT_TEMPORARY( |
1465 | DICompileUnit, |
1466 | (unsigned SourceLanguage, DIFile *File, StringRef Producer, |
1467 | bool IsOptimized, StringRef Flags, unsigned RuntimeVersion, |
1468 | StringRef SplitDebugFilename, DebugEmissionKind EmissionKind, |
1469 | DICompositeTypeArray EnumTypes, DIScopeArray RetainedTypes, |
1470 | DIGlobalVariableExpressionArray GlobalVariables, |
1471 | DIImportedEntityArray ImportedEntities, DIMacroNodeArray Macros, |
1472 | uint64_t DWOId, bool SplitDebugInlining, bool DebugInfoForProfiling, |
1473 | DebugNameTableKind NameTableKind, bool RangesBaseAddress, |
1474 | StringRef SysRoot, StringRef SDK), |
1475 | (SourceLanguage, File, Producer, IsOptimized, Flags, RuntimeVersion, |
1476 | SplitDebugFilename, EmissionKind, EnumTypes, RetainedTypes, |
1477 | GlobalVariables, ImportedEntities, Macros, DWOId, SplitDebugInlining, |
1478 | DebugInfoForProfiling, (unsigned)NameTableKind, RangesBaseAddress, |
1479 | SysRoot, SDK)) |
1480 | DEFINE_MDNODE_GET_DISTINCT_TEMPORARY( |
1481 | DICompileUnit, |
1482 | (unsigned SourceLanguage, Metadata *File, MDString *Producer, |
1483 | bool IsOptimized, MDString *Flags, unsigned RuntimeVersion, |
1484 | MDString *SplitDebugFilename, unsigned EmissionKind, Metadata *EnumTypes, |
1485 | Metadata *RetainedTypes, Metadata *GlobalVariables, |
1486 | Metadata *ImportedEntities, Metadata *Macros, uint64_t DWOId, |
1487 | bool SplitDebugInlining, bool DebugInfoForProfiling, |
1488 | unsigned NameTableKind, bool RangesBaseAddress, MDString *SysRoot, |
1489 | MDString *SDK), |
1490 | (SourceLanguage, File, Producer, IsOptimized, Flags, RuntimeVersion, |
1491 | SplitDebugFilename, EmissionKind, EnumTypes, RetainedTypes, |
1492 | GlobalVariables, ImportedEntities, Macros, DWOId, SplitDebugInlining, |
1493 | DebugInfoForProfiling, NameTableKind, RangesBaseAddress, SysRoot, SDK)) |
1494 | |
1495 | TempDICompileUnit clone() const { return cloneImpl(); } |
1496 | |
1497 | unsigned getSourceLanguage() const { return SourceLanguage; } |
1498 | bool isOptimized() const { return IsOptimized; } |
1499 | unsigned getRuntimeVersion() const { return RuntimeVersion; } |
1500 | DebugEmissionKind getEmissionKind() const { |
1501 | return (DebugEmissionKind)EmissionKind; |
1502 | } |
1503 | bool isDebugDirectivesOnly() const { |
1504 | return EmissionKind == DebugDirectivesOnly; |
1505 | } |
1506 | bool getDebugInfoForProfiling() const { return DebugInfoForProfiling; } |
1507 | DebugNameTableKind getNameTableKind() const { |
1508 | return (DebugNameTableKind)NameTableKind; |
1509 | } |
1510 | bool getRangesBaseAddress() const { return RangesBaseAddress; } |
1511 | StringRef getProducer() const { return getStringOperand(I: 1); } |
1512 | StringRef getFlags() const { return getStringOperand(I: 2); } |
1513 | StringRef getSplitDebugFilename() const { return getStringOperand(I: 3); } |
1514 | DICompositeTypeArray getEnumTypes() const { |
1515 | return cast_or_null<MDTuple>(Val: getRawEnumTypes()); |
1516 | } |
1517 | DIScopeArray getRetainedTypes() const { |
1518 | return cast_or_null<MDTuple>(Val: getRawRetainedTypes()); |
1519 | } |
1520 | DIGlobalVariableExpressionArray getGlobalVariables() const { |
1521 | return cast_or_null<MDTuple>(Val: getRawGlobalVariables()); |
1522 | } |
1523 | DIImportedEntityArray getImportedEntities() const { |
1524 | return cast_or_null<MDTuple>(Val: getRawImportedEntities()); |
1525 | } |
1526 | DIMacroNodeArray getMacros() const { |
1527 | return cast_or_null<MDTuple>(Val: getRawMacros()); |
1528 | } |
1529 | uint64_t getDWOId() const { return DWOId; } |
1530 | void setDWOId(uint64_t DwoId) { DWOId = DwoId; } |
1531 | bool getSplitDebugInlining() const { return SplitDebugInlining; } |
1532 | void setSplitDebugInlining(bool SplitDebugInlining) { |
1533 | this->SplitDebugInlining = SplitDebugInlining; |
1534 | } |
1535 | StringRef getSysRoot() const { return getStringOperand(I: 9); } |
1536 | StringRef getSDK() const { return getStringOperand(I: 10); } |
1537 | |
1538 | MDString *getRawProducer() const { return getOperandAs<MDString>(I: 1); } |
1539 | MDString *getRawFlags() const { return getOperandAs<MDString>(I: 2); } |
1540 | MDString *getRawSplitDebugFilename() const { |
1541 | return getOperandAs<MDString>(I: 3); |
1542 | } |
1543 | Metadata *getRawEnumTypes() const { return getOperand(I: 4); } |
1544 | Metadata *getRawRetainedTypes() const { return getOperand(I: 5); } |
1545 | Metadata *getRawGlobalVariables() const { return getOperand(I: 6); } |
1546 | Metadata *getRawImportedEntities() const { return getOperand(I: 7); } |
1547 | Metadata *getRawMacros() const { return getOperand(I: 8); } |
1548 | MDString *getRawSysRoot() const { return getOperandAs<MDString>(I: 9); } |
1549 | MDString *getRawSDK() const { return getOperandAs<MDString>(I: 10); } |
1550 | |
1551 | /// Replace arrays. |
1552 | /// |
1553 | /// If this \a isUniqued() and not \a isResolved(), it will be RAUW'ed and |
1554 | /// deleted on a uniquing collision. In practice, uniquing collisions on \a |
1555 | /// DICompileUnit should be fairly rare. |
1556 | /// @{ |
1557 | void replaceEnumTypes(DICompositeTypeArray N) { |
1558 | replaceOperandWith(I: 4, New: N.get()); |
1559 | } |
1560 | void replaceRetainedTypes(DITypeArray N) { replaceOperandWith(I: 5, New: N.get()); } |
1561 | void replaceGlobalVariables(DIGlobalVariableExpressionArray N) { |
1562 | replaceOperandWith(I: 6, New: N.get()); |
1563 | } |
1564 | void replaceImportedEntities(DIImportedEntityArray N) { |
1565 | replaceOperandWith(I: 7, New: N.get()); |
1566 | } |
1567 | void replaceMacros(DIMacroNodeArray N) { replaceOperandWith(I: 8, New: N.get()); } |
1568 | /// @} |
1569 | |
1570 | static bool classof(const Metadata *MD) { |
1571 | return MD->getMetadataID() == DICompileUnitKind; |
1572 | } |
1573 | }; |
1574 | |
1575 | /// A scope for locals. |
1576 | /// |
1577 | /// A legal scope for lexical blocks, local variables, and debug info |
1578 | /// locations. Subclasses are \a DISubprogram, \a DILexicalBlock, and \a |
1579 | /// DILexicalBlockFile. |
1580 | class DILocalScope : public DIScope { |
1581 | protected: |
1582 | DILocalScope(LLVMContext &C, unsigned ID, StorageType Storage, unsigned Tag, |
1583 | ArrayRef<Metadata *> Ops) |
1584 | : DIScope(C, ID, Storage, Tag, Ops) {} |
1585 | ~DILocalScope() = default; |
1586 | |
1587 | public: |
1588 | /// Get the subprogram for this scope. |
1589 | /// |
1590 | /// Return this if it's an \a DISubprogram; otherwise, look up the scope |
1591 | /// chain. |
1592 | DISubprogram *getSubprogram() const; |
1593 | |
1594 | /// Traverses the scope chain rooted at RootScope until it hits a Subprogram, |
1595 | /// recreating the chain with "NewSP" instead. |
1596 | static DILocalScope * |
1597 | cloneScopeForSubprogram(DILocalScope &RootScope, DISubprogram &NewSP, |
1598 | LLVMContext &Ctx, |
1599 | DenseMap<const MDNode *, MDNode *> &Cache); |
1600 | |
1601 | /// Get the first non DILexicalBlockFile scope of this scope. |
1602 | /// |
1603 | /// Return this if it's not a \a DILexicalBlockFIle; otherwise, look up the |
1604 | /// scope chain. |
1605 | DILocalScope *getNonLexicalBlockFileScope() const; |
1606 | |
1607 | static bool classof(const Metadata *MD) { |
1608 | return MD->getMetadataID() == DISubprogramKind || |
1609 | MD->getMetadataID() == DILexicalBlockKind || |
1610 | MD->getMetadataID() == DILexicalBlockFileKind; |
1611 | } |
1612 | }; |
1613 | |
1614 | /// Subprogram description. |
1615 | class DISubprogram : public DILocalScope { |
1616 | friend class LLVMContextImpl; |
1617 | friend class MDNode; |
1618 | |
1619 | unsigned Line; |
1620 | unsigned ScopeLine; |
1621 | unsigned VirtualIndex; |
1622 | |
1623 | /// In the MS ABI, the implicit 'this' parameter is adjusted in the prologue |
1624 | /// of method overrides from secondary bases by this amount. It may be |
1625 | /// negative. |
1626 | int ThisAdjustment; |
1627 | |
1628 | public: |
1629 | /// Debug info subprogram flags. |
1630 | enum DISPFlags : uint32_t { |
1631 | #define HANDLE_DISP_FLAG(ID, NAME) SPFlag##NAME = ID, |
1632 | #define DISP_FLAG_LARGEST_NEEDED |
1633 | #include "llvm/IR/DebugInfoFlags.def" |
1634 | SPFlagNonvirtual = SPFlagZero, |
1635 | SPFlagVirtuality = SPFlagVirtual | SPFlagPureVirtual, |
1636 | LLVM_MARK_AS_BITMASK_ENUM(SPFlagLargest) |
1637 | }; |
1638 | |
1639 | static DISPFlags getFlag(StringRef Flag); |
1640 | static StringRef getFlagString(DISPFlags Flag); |
1641 | |
1642 | /// Split up a flags bitfield for easier printing. |
1643 | /// |
1644 | /// Split \c Flags into \c SplitFlags, a vector of its components. Returns |
1645 | /// any remaining (unrecognized) bits. |
1646 | static DISPFlags splitFlags(DISPFlags Flags, |
1647 | SmallVectorImpl<DISPFlags> &SplitFlags); |
1648 | |
1649 | // Helper for converting old bitfields to new flags word. |
1650 | static DISPFlags toSPFlags(bool IsLocalToUnit, bool IsDefinition, |
1651 | bool IsOptimized, |
1652 | unsigned Virtuality = SPFlagNonvirtual, |
1653 | bool IsMainSubprogram = false); |
1654 | |
1655 | private: |
1656 | DIFlags Flags; |
1657 | DISPFlags SPFlags; |
1658 | |
1659 | DISubprogram(LLVMContext &C, StorageType Storage, unsigned Line, |
1660 | unsigned ScopeLine, unsigned VirtualIndex, int ThisAdjustment, |
1661 | DIFlags Flags, DISPFlags SPFlags, ArrayRef<Metadata *> Ops); |
1662 | ~DISubprogram() = default; |
1663 | |
1664 | static DISubprogram * |
1665 | getImpl(LLVMContext &Context, DIScope *Scope, StringRef Name, |
1666 | StringRef LinkageName, DIFile *File, unsigned Line, |
1667 | DISubroutineType *Type, unsigned ScopeLine, DIType *ContainingType, |
1668 | unsigned VirtualIndex, int ThisAdjustment, DIFlags Flags, |
1669 | DISPFlags SPFlags, DICompileUnit *Unit, |
1670 | DITemplateParameterArray TemplateParams, DISubprogram *Declaration, |
1671 | DINodeArray RetainedNodes, DITypeArray ThrownTypes, |
1672 | DINodeArray Annotations, StringRef TargetFuncName, |
1673 | StorageType Storage, bool ShouldCreate = true) { |
1674 | return getImpl(Context, Scope, Name: getCanonicalMDString(Context, S: Name), |
1675 | LinkageName: getCanonicalMDString(Context, S: LinkageName), File, Line, Type, |
1676 | ScopeLine, ContainingType, VirtualIndex, ThisAdjustment, |
1677 | Flags, SPFlags, Unit, TemplateParams: TemplateParams.get(), Declaration, |
1678 | RetainedNodes: RetainedNodes.get(), ThrownTypes: ThrownTypes.get(), Annotations: Annotations.get(), |
1679 | TargetFuncName: getCanonicalMDString(Context, S: TargetFuncName), |
1680 | Storage, ShouldCreate); |
1681 | } |
1682 | static DISubprogram * |
1683 | getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name, |
1684 | MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type, |
1685 | unsigned ScopeLine, Metadata *ContainingType, unsigned VirtualIndex, |
1686 | int ThisAdjustment, DIFlags Flags, DISPFlags SPFlags, Metadata *Unit, |
1687 | Metadata *TemplateParams, Metadata *Declaration, |
1688 | Metadata *RetainedNodes, Metadata *ThrownTypes, Metadata *Annotations, |
1689 | MDString *TargetFuncName, StorageType Storage, |
1690 | bool ShouldCreate = true); |
1691 | |
1692 | TempDISubprogram cloneImpl() const { |
1693 | return getTemporary(Context&: getContext(), Scope: getScope(), Name: getName(), LinkageName: getLinkageName(), |
1694 | File: getFile(), Line: getLine(), Type: getType(), ScopeLine: getScopeLine(), |
1695 | ContainingType: getContainingType(), VirtualIndex: getVirtualIndex(), |
1696 | ThisAdjustment: getThisAdjustment(), Flags: getFlags(), SPFlags: getSPFlags(), |
1697 | Unit: getUnit(), TemplateParams: getTemplateParams(), Declaration: getDeclaration(), |
1698 | RetainedNodes: getRetainedNodes(), ThrownTypes: getThrownTypes(), Annotations: getAnnotations(), |
1699 | TargetFuncName: getTargetFuncName()); |
1700 | } |
1701 | |
1702 | public: |
1703 | DEFINE_MDNODE_GET( |
1704 | DISubprogram, |
1705 | (DIScope * Scope, StringRef Name, StringRef LinkageName, DIFile *File, |
1706 | unsigned Line, DISubroutineType *Type, unsigned ScopeLine, |
1707 | DIType *ContainingType, unsigned VirtualIndex, int ThisAdjustment, |
1708 | DIFlags Flags, DISPFlags SPFlags, DICompileUnit *Unit, |
1709 | DITemplateParameterArray TemplateParams = nullptr, |
1710 | DISubprogram *Declaration = nullptr, DINodeArray RetainedNodes = nullptr, |
1711 | DITypeArray ThrownTypes = nullptr, DINodeArray Annotations = nullptr, |
1712 | StringRef TargetFuncName = "" ), |
1713 | (Scope, Name, LinkageName, File, Line, Type, ScopeLine, ContainingType, |
1714 | VirtualIndex, ThisAdjustment, Flags, SPFlags, Unit, TemplateParams, |
1715 | Declaration, RetainedNodes, ThrownTypes, Annotations, TargetFuncName)) |
1716 | |
1717 | DEFINE_MDNODE_GET( |
1718 | DISubprogram, |
1719 | (Metadata * Scope, MDString *Name, MDString *LinkageName, Metadata *File, |
1720 | unsigned Line, Metadata *Type, unsigned ScopeLine, |
1721 | Metadata *ContainingType, unsigned VirtualIndex, int ThisAdjustment, |
1722 | DIFlags Flags, DISPFlags SPFlags, Metadata *Unit, |
1723 | Metadata *TemplateParams = nullptr, Metadata *Declaration = nullptr, |
1724 | Metadata *RetainedNodes = nullptr, Metadata *ThrownTypes = nullptr, |
1725 | Metadata *Annotations = nullptr, MDString *TargetFuncName = nullptr), |
1726 | (Scope, Name, LinkageName, File, Line, Type, ScopeLine, ContainingType, |
1727 | VirtualIndex, ThisAdjustment, Flags, SPFlags, Unit, TemplateParams, |
1728 | Declaration, RetainedNodes, ThrownTypes, Annotations, TargetFuncName)) |
1729 | |
1730 | TempDISubprogram clone() const { return cloneImpl(); } |
1731 | |
1732 | /// Returns a new temporary DISubprogram with updated Flags |
1733 | TempDISubprogram cloneWithFlags(DIFlags NewFlags) const { |
1734 | auto NewSP = clone(); |
1735 | NewSP->Flags = NewFlags; |
1736 | return NewSP; |
1737 | } |
1738 | |
1739 | public: |
1740 | unsigned getLine() const { return Line; } |
1741 | unsigned getVirtuality() const { return getSPFlags() & SPFlagVirtuality; } |
1742 | unsigned getVirtualIndex() const { return VirtualIndex; } |
1743 | int getThisAdjustment() const { return ThisAdjustment; } |
1744 | unsigned getScopeLine() const { return ScopeLine; } |
1745 | void setScopeLine(unsigned L) { |
1746 | assert(isDistinct()); |
1747 | ScopeLine = L; |
1748 | } |
1749 | DIFlags getFlags() const { return Flags; } |
1750 | DISPFlags getSPFlags() const { return SPFlags; } |
1751 | bool isLocalToUnit() const { return getSPFlags() & SPFlagLocalToUnit; } |
1752 | bool isDefinition() const { return getSPFlags() & SPFlagDefinition; } |
1753 | bool isOptimized() const { return getSPFlags() & SPFlagOptimized; } |
1754 | bool isMainSubprogram() const { return getSPFlags() & SPFlagMainSubprogram; } |
1755 | |
1756 | bool isArtificial() const { return getFlags() & FlagArtificial; } |
1757 | bool isPrivate() const { |
1758 | return (getFlags() & FlagAccessibility) == FlagPrivate; |
1759 | } |
1760 | bool isProtected() const { |
1761 | return (getFlags() & FlagAccessibility) == FlagProtected; |
1762 | } |
1763 | bool isPublic() const { |
1764 | return (getFlags() & FlagAccessibility) == FlagPublic; |
1765 | } |
1766 | bool isExplicit() const { return getFlags() & FlagExplicit; } |
1767 | bool isPrototyped() const { return getFlags() & FlagPrototyped; } |
1768 | bool areAllCallsDescribed() const { |
1769 | return getFlags() & FlagAllCallsDescribed; |
1770 | } |
1771 | bool isPure() const { return getSPFlags() & SPFlagPure; } |
1772 | bool isElemental() const { return getSPFlags() & SPFlagElemental; } |
1773 | bool isRecursive() const { return getSPFlags() & SPFlagRecursive; } |
1774 | bool isObjCDirect() const { return getSPFlags() & SPFlagObjCDirect; } |
1775 | |
1776 | /// Check if this is deleted member function. |
1777 | /// |
1778 | /// Return true if this subprogram is a C++11 special |
1779 | /// member function declared deleted. |
1780 | bool isDeleted() const { return getSPFlags() & SPFlagDeleted; } |
1781 | |
1782 | /// Check if this is reference-qualified. |
1783 | /// |
1784 | /// Return true if this subprogram is a C++11 reference-qualified non-static |
1785 | /// member function (void foo() &). |
1786 | bool isLValueReference() const { return getFlags() & FlagLValueReference; } |
1787 | |
1788 | /// Check if this is rvalue-reference-qualified. |
1789 | /// |
1790 | /// Return true if this subprogram is a C++11 rvalue-reference-qualified |
1791 | /// non-static member function (void foo() &&). |
1792 | bool isRValueReference() const { return getFlags() & FlagRValueReference; } |
1793 | |
1794 | /// Check if this is marked as noreturn. |
1795 | /// |
1796 | /// Return true if this subprogram is C++11 noreturn or C11 _Noreturn |
1797 | bool isNoReturn() const { return getFlags() & FlagNoReturn; } |
1798 | |
1799 | // Check if this routine is a compiler-generated thunk. |
1800 | // |
1801 | // Returns true if this subprogram is a thunk generated by the compiler. |
1802 | bool isThunk() const { return getFlags() & FlagThunk; } |
1803 | |
1804 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
1805 | |
1806 | StringRef getName() const { return getStringOperand(I: 2); } |
1807 | StringRef getLinkageName() const { return getStringOperand(I: 3); } |
1808 | /// Only used by clients of CloneFunction, and only right after the cloning. |
1809 | void replaceLinkageName(MDString *LN) { replaceOperandWith(I: 3, New: LN); } |
1810 | |
1811 | DISubroutineType *getType() const { |
1812 | return cast_or_null<DISubroutineType>(Val: getRawType()); |
1813 | } |
1814 | DIType *getContainingType() const { |
1815 | return cast_or_null<DIType>(Val: getRawContainingType()); |
1816 | } |
1817 | void replaceType(DISubroutineType *Ty) { |
1818 | assert(isDistinct() && "Only distinct nodes can mutate" ); |
1819 | replaceOperandWith(I: 4, New: Ty); |
1820 | } |
1821 | |
1822 | DICompileUnit *getUnit() const { |
1823 | return cast_or_null<DICompileUnit>(Val: getRawUnit()); |
1824 | } |
1825 | void replaceUnit(DICompileUnit *CU) { replaceOperandWith(I: 5, New: CU); } |
1826 | DITemplateParameterArray getTemplateParams() const { |
1827 | return cast_or_null<MDTuple>(Val: getRawTemplateParams()); |
1828 | } |
1829 | DISubprogram *getDeclaration() const { |
1830 | return cast_or_null<DISubprogram>(Val: getRawDeclaration()); |
1831 | } |
1832 | void replaceDeclaration(DISubprogram *Decl) { replaceOperandWith(I: 6, New: Decl); } |
1833 | DINodeArray getRetainedNodes() const { |
1834 | return cast_or_null<MDTuple>(Val: getRawRetainedNodes()); |
1835 | } |
1836 | DITypeArray getThrownTypes() const { |
1837 | return cast_or_null<MDTuple>(Val: getRawThrownTypes()); |
1838 | } |
1839 | DINodeArray getAnnotations() const { |
1840 | return cast_or_null<MDTuple>(Val: getRawAnnotations()); |
1841 | } |
1842 | StringRef getTargetFuncName() const { |
1843 | return (getRawTargetFuncName()) ? getStringOperand(I: 12) : StringRef(); |
1844 | } |
1845 | |
1846 | Metadata *getRawScope() const { return getOperand(I: 1); } |
1847 | MDString *getRawName() const { return getOperandAs<MDString>(I: 2); } |
1848 | MDString *getRawLinkageName() const { return getOperandAs<MDString>(I: 3); } |
1849 | Metadata *getRawType() const { return getOperand(I: 4); } |
1850 | Metadata *getRawUnit() const { return getOperand(I: 5); } |
1851 | Metadata *getRawDeclaration() const { return getOperand(I: 6); } |
1852 | Metadata *getRawRetainedNodes() const { return getOperand(I: 7); } |
1853 | Metadata *getRawContainingType() const { |
1854 | return getNumOperands() > 8 ? getOperandAs<Metadata>(I: 8) : nullptr; |
1855 | } |
1856 | Metadata *getRawTemplateParams() const { |
1857 | return getNumOperands() > 9 ? getOperandAs<Metadata>(I: 9) : nullptr; |
1858 | } |
1859 | Metadata *getRawThrownTypes() const { |
1860 | return getNumOperands() > 10 ? getOperandAs<Metadata>(I: 10) : nullptr; |
1861 | } |
1862 | Metadata *getRawAnnotations() const { |
1863 | return getNumOperands() > 11 ? getOperandAs<Metadata>(I: 11) : nullptr; |
1864 | } |
1865 | MDString *getRawTargetFuncName() const { |
1866 | return getNumOperands() > 12 ? getOperandAs<MDString>(I: 12) : nullptr; |
1867 | } |
1868 | |
1869 | void replaceRawLinkageName(MDString *LinkageName) { |
1870 | replaceOperandWith(I: 3, New: LinkageName); |
1871 | } |
1872 | void replaceRetainedNodes(DINodeArray N) { |
1873 | replaceOperandWith(I: 7, New: N.get()); |
1874 | } |
1875 | |
1876 | /// Check if this subprogram describes the given function. |
1877 | /// |
1878 | /// FIXME: Should this be looking through bitcasts? |
1879 | bool describes(const Function *F) const; |
1880 | |
1881 | static bool classof(const Metadata *MD) { |
1882 | return MD->getMetadataID() == DISubprogramKind; |
1883 | } |
1884 | }; |
1885 | |
1886 | /// Debug location. |
1887 | /// |
1888 | /// A debug location in source code, used for debug info and otherwise. |
1889 | /// |
1890 | /// Uses the SubclassData1, SubclassData16 and SubclassData32 |
1891 | /// Metadata slots. |
1892 | |
1893 | class DILocation : public MDNode { |
1894 | friend class LLVMContextImpl; |
1895 | friend class MDNode; |
1896 | |
1897 | DILocation(LLVMContext &C, StorageType Storage, unsigned Line, |
1898 | unsigned Column, ArrayRef<Metadata *> MDs, bool ImplicitCode); |
1899 | ~DILocation() { dropAllReferences(); } |
1900 | |
1901 | static DILocation *getImpl(LLVMContext &Context, unsigned Line, |
1902 | unsigned Column, Metadata *Scope, |
1903 | Metadata *InlinedAt, bool ImplicitCode, |
1904 | StorageType Storage, bool ShouldCreate = true); |
1905 | static DILocation *getImpl(LLVMContext &Context, unsigned Line, |
1906 | unsigned Column, DILocalScope *Scope, |
1907 | DILocation *InlinedAt, bool ImplicitCode, |
1908 | StorageType Storage, bool ShouldCreate = true) { |
1909 | return getImpl(Context, Line, Column, Scope: static_cast<Metadata *>(Scope), |
1910 | InlinedAt: static_cast<Metadata *>(InlinedAt), ImplicitCode, Storage, |
1911 | ShouldCreate); |
1912 | } |
1913 | |
1914 | TempDILocation cloneImpl() const { |
1915 | // Get the raw scope/inlinedAt since it is possible to invoke this on |
1916 | // a DILocation containing temporary metadata. |
1917 | return getTemporary(Context&: getContext(), Line: getLine(), Column: getColumn(), Scope: getRawScope(), |
1918 | InlinedAt: getRawInlinedAt(), ImplicitCode: isImplicitCode()); |
1919 | } |
1920 | |
1921 | public: |
1922 | // Disallow replacing operands. |
1923 | void replaceOperandWith(unsigned I, Metadata *New) = delete; |
1924 | |
1925 | DEFINE_MDNODE_GET(DILocation, |
1926 | (unsigned Line, unsigned Column, Metadata *Scope, |
1927 | Metadata *InlinedAt = nullptr, bool ImplicitCode = false), |
1928 | (Line, Column, Scope, InlinedAt, ImplicitCode)) |
1929 | DEFINE_MDNODE_GET(DILocation, |
1930 | (unsigned Line, unsigned Column, DILocalScope *Scope, |
1931 | DILocation *InlinedAt = nullptr, |
1932 | bool ImplicitCode = false), |
1933 | (Line, Column, Scope, InlinedAt, ImplicitCode)) |
1934 | |
1935 | /// Return a (temporary) clone of this. |
1936 | TempDILocation clone() const { return cloneImpl(); } |
1937 | |
1938 | unsigned getLine() const { return SubclassData32; } |
1939 | unsigned getColumn() const { return SubclassData16; } |
1940 | DILocalScope *getScope() const { return cast<DILocalScope>(Val: getRawScope()); } |
1941 | |
1942 | /// Return the linkage name of Subprogram. If the linkage name is empty, |
1943 | /// return scope name (the demangled name). |
1944 | StringRef getSubprogramLinkageName() const { |
1945 | DISubprogram *SP = getScope()->getSubprogram(); |
1946 | if (!SP) |
1947 | return "" ; |
1948 | auto Name = SP->getLinkageName(); |
1949 | if (!Name.empty()) |
1950 | return Name; |
1951 | return SP->getName(); |
1952 | } |
1953 | |
1954 | DILocation *getInlinedAt() const { |
1955 | return cast_or_null<DILocation>(Val: getRawInlinedAt()); |
1956 | } |
1957 | |
1958 | /// Check if the location corresponds to an implicit code. |
1959 | /// When the ImplicitCode flag is true, it means that the Instruction |
1960 | /// with this DILocation has been added by the front-end but it hasn't been |
1961 | /// written explicitly by the user (e.g. cleanup stuff in C++ put on a closing |
1962 | /// bracket). It's useful for code coverage to not show a counter on "empty" |
1963 | /// lines. |
1964 | bool isImplicitCode() const { return SubclassData1; } |
1965 | void setImplicitCode(bool ImplicitCode) { SubclassData1 = ImplicitCode; } |
1966 | |
1967 | DIFile *getFile() const { return getScope()->getFile(); } |
1968 | StringRef getFilename() const { return getScope()->getFilename(); } |
1969 | StringRef getDirectory() const { return getScope()->getDirectory(); } |
1970 | std::optional<StringRef> getSource() const { return getScope()->getSource(); } |
1971 | |
1972 | /// Get the scope where this is inlined. |
1973 | /// |
1974 | /// Walk through \a getInlinedAt() and return \a getScope() from the deepest |
1975 | /// location. |
1976 | DILocalScope *getInlinedAtScope() const { |
1977 | if (auto *IA = getInlinedAt()) |
1978 | return IA->getInlinedAtScope(); |
1979 | return getScope(); |
1980 | } |
1981 | |
1982 | /// Get the DWARF discriminator. |
1983 | /// |
1984 | /// DWARF discriminators distinguish identical file locations between |
1985 | /// instructions that are on different basic blocks. |
1986 | /// |
1987 | /// There are 3 components stored in discriminator, from lower bits: |
1988 | /// |
1989 | /// Base discriminator: assigned by AddDiscriminators pass to identify IRs |
1990 | /// that are defined by the same source line, but |
1991 | /// different basic blocks. |
1992 | /// Duplication factor: assigned by optimizations that will scale down |
1993 | /// the execution frequency of the original IR. |
1994 | /// Copy Identifier: assigned by optimizations that clones the IR. |
1995 | /// Each copy of the IR will be assigned an identifier. |
1996 | /// |
1997 | /// Encoding: |
1998 | /// |
1999 | /// The above 3 components are encoded into a 32bit unsigned integer in |
2000 | /// order. If the lowest bit is 1, the current component is empty, and the |
2001 | /// next component will start in the next bit. Otherwise, the current |
2002 | /// component is non-empty, and its content starts in the next bit. The |
2003 | /// value of each components is either 5 bit or 12 bit: if the 7th bit |
2004 | /// is 0, the bit 2~6 (5 bits) are used to represent the component; if the |
2005 | /// 7th bit is 1, the bit 2~6 (5 bits) and 8~14 (7 bits) are combined to |
2006 | /// represent the component. Thus, the number of bits used for a component |
2007 | /// is either 0 (if it and all the next components are empty); 1 - if it is |
2008 | /// empty; 7 - if its value is up to and including 0x1f (lsb and msb are both |
2009 | /// 0); or 14, if its value is up to and including 0x1ff. Note that the last |
2010 | /// component is also capped at 0x1ff, even in the case when both first |
2011 | /// components are 0, and we'd technically have 29 bits available. |
2012 | /// |
2013 | /// For precise control over the data being encoded in the discriminator, |
2014 | /// use encodeDiscriminator/decodeDiscriminator. |
2015 | |
2016 | inline unsigned getDiscriminator() const; |
2017 | |
2018 | // For the regular discriminator, it stands for all empty components if all |
2019 | // the lowest 3 bits are non-zero and all higher 29 bits are unused(zero by |
2020 | // default). Here we fully leverage the higher 29 bits for pseudo probe use. |
2021 | // This is the format: |
2022 | // [2:0] - 0x7 |
2023 | // [31:3] - pseudo probe fields guaranteed to be non-zero as a whole |
2024 | // So if the lower 3 bits is non-zero and the others has at least one |
2025 | // non-zero bit, it guarantees to be a pseudo probe discriminator |
2026 | inline static bool isPseudoProbeDiscriminator(unsigned Discriminator) { |
2027 | return ((Discriminator & 0x7) == 0x7) && (Discriminator & 0xFFFFFFF8); |
2028 | } |
2029 | |
2030 | /// Returns a new DILocation with updated \p Discriminator. |
2031 | inline const DILocation *cloneWithDiscriminator(unsigned Discriminator) const; |
2032 | |
2033 | /// Returns a new DILocation with updated base discriminator \p BD. Only the |
2034 | /// base discriminator is set in the new DILocation, the other encoded values |
2035 | /// are elided. |
2036 | /// If the discriminator cannot be encoded, the function returns std::nullopt. |
2037 | inline std::optional<const DILocation *> |
2038 | cloneWithBaseDiscriminator(unsigned BD) const; |
2039 | |
2040 | /// Returns the duplication factor stored in the discriminator, or 1 if no |
2041 | /// duplication factor (or 0) is encoded. |
2042 | inline unsigned getDuplicationFactor() const; |
2043 | |
2044 | /// Returns the copy identifier stored in the discriminator. |
2045 | inline unsigned getCopyIdentifier() const; |
2046 | |
2047 | /// Returns the base discriminator stored in the discriminator. |
2048 | inline unsigned getBaseDiscriminator() const; |
2049 | |
2050 | /// Returns a new DILocation with duplication factor \p DF * current |
2051 | /// duplication factor encoded in the discriminator. The current duplication |
2052 | /// factor is as defined by getDuplicationFactor(). |
2053 | /// Returns std::nullopt if encoding failed. |
2054 | inline std::optional<const DILocation *> |
2055 | cloneByMultiplyingDuplicationFactor(unsigned DF) const; |
2056 | |
2057 | /// When two instructions are combined into a single instruction we also |
2058 | /// need to combine the original locations into a single location. |
2059 | /// When the locations are the same we can use either location. |
2060 | /// When they differ, we need a third location which is distinct from either. |
2061 | /// If they share a common scope, use this scope and compare the line/column |
2062 | /// pair of the locations with the common scope: |
2063 | /// * if both match, keep the line and column; |
2064 | /// * if only the line number matches, keep the line and set the column as 0; |
2065 | /// * otherwise set line and column as 0. |
2066 | /// If they do not share a common scope the location is ambiguous and can't be |
2067 | /// represented in a line entry. In this case, set line and column as 0 and |
2068 | /// use the scope of any location. |
2069 | /// |
2070 | /// \p LocA \p LocB: The locations to be merged. |
2071 | static DILocation *getMergedLocation(DILocation *LocA, DILocation *LocB); |
2072 | |
2073 | /// Try to combine the vector of locations passed as input in a single one. |
2074 | /// This function applies getMergedLocation() repeatedly left-to-right. |
2075 | /// |
2076 | /// \p Locs: The locations to be merged. |
2077 | static DILocation *getMergedLocations(ArrayRef<DILocation *> Locs); |
2078 | |
2079 | /// Return the masked discriminator value for an input discrimnator value D |
2080 | /// (i.e. zero out the (B+1)-th and above bits for D (B is 0-base). |
2081 | // Example: an input of (0x1FF, 7) returns 0xFF. |
2082 | static unsigned getMaskedDiscriminator(unsigned D, unsigned B) { |
2083 | return (D & getN1Bits(N: B)); |
2084 | } |
2085 | |
2086 | /// Return the bits used for base discriminators. |
2087 | static unsigned getBaseDiscriminatorBits() { return getBaseFSBitEnd(); } |
2088 | |
2089 | /// Returns the base discriminator for a given encoded discriminator \p D. |
2090 | static unsigned |
2091 | getBaseDiscriminatorFromDiscriminator(unsigned D, |
2092 | bool IsFSDiscriminator = false) { |
2093 | // Return the probe id instead of zero for a pseudo probe discriminator. |
2094 | // This should help differenciate callsites with same line numbers to |
2095 | // achieve a decent AutoFDO profile under -fpseudo-probe-for-profiling, |
2096 | // where the original callsite dwarf discriminator is overwritten by |
2097 | // callsite probe information. |
2098 | if (isPseudoProbeDiscriminator(Discriminator: D)) |
2099 | return PseudoProbeDwarfDiscriminator::extractProbeIndex(Value: D); |
2100 | |
2101 | if (IsFSDiscriminator) |
2102 | return getMaskedDiscriminator(D, B: getBaseDiscriminatorBits()); |
2103 | return getUnsignedFromPrefixEncoding(U: D); |
2104 | } |
2105 | |
2106 | /// Raw encoding of the discriminator. APIs such as cloneWithDuplicationFactor |
2107 | /// have certain special case behavior (e.g. treating empty duplication factor |
2108 | /// as the value '1'). |
2109 | /// This API, in conjunction with cloneWithDiscriminator, may be used to |
2110 | /// encode the raw values provided. |
2111 | /// |
2112 | /// \p BD: base discriminator |
2113 | /// \p DF: duplication factor |
2114 | /// \p CI: copy index |
2115 | /// |
2116 | /// The return is std::nullopt if the values cannot be encoded in 32 bits - |
2117 | /// for example, values for BD or DF larger than 12 bits. Otherwise, the |
2118 | /// return is the encoded value. |
2119 | static std::optional<unsigned> encodeDiscriminator(unsigned BD, unsigned DF, |
2120 | unsigned CI); |
2121 | |
2122 | /// Raw decoder for values in an encoded discriminator D. |
2123 | static void decodeDiscriminator(unsigned D, unsigned &BD, unsigned &DF, |
2124 | unsigned &CI); |
2125 | |
2126 | /// Returns the duplication factor for a given encoded discriminator \p D, or |
2127 | /// 1 if no value or 0 is encoded. |
2128 | static unsigned getDuplicationFactorFromDiscriminator(unsigned D) { |
2129 | if (EnableFSDiscriminator) |
2130 | return 1; |
2131 | D = getNextComponentInDiscriminator(D); |
2132 | unsigned Ret = getUnsignedFromPrefixEncoding(U: D); |
2133 | if (Ret == 0) |
2134 | return 1; |
2135 | return Ret; |
2136 | } |
2137 | |
2138 | /// Returns the copy identifier for a given encoded discriminator \p D. |
2139 | static unsigned getCopyIdentifierFromDiscriminator(unsigned D) { |
2140 | return getUnsignedFromPrefixEncoding( |
2141 | U: getNextComponentInDiscriminator(D: getNextComponentInDiscriminator(D))); |
2142 | } |
2143 | |
2144 | Metadata *getRawScope() const { return getOperand(I: 0); } |
2145 | Metadata *getRawInlinedAt() const { |
2146 | if (getNumOperands() == 2) |
2147 | return getOperand(I: 1); |
2148 | return nullptr; |
2149 | } |
2150 | |
2151 | static bool classof(const Metadata *MD) { |
2152 | return MD->getMetadataID() == DILocationKind; |
2153 | } |
2154 | }; |
2155 | |
2156 | class DILexicalBlockBase : public DILocalScope { |
2157 | protected: |
2158 | DILexicalBlockBase(LLVMContext &C, unsigned ID, StorageType Storage, |
2159 | ArrayRef<Metadata *> Ops); |
2160 | ~DILexicalBlockBase() = default; |
2161 | |
2162 | public: |
2163 | DILocalScope *getScope() const { return cast<DILocalScope>(Val: getRawScope()); } |
2164 | |
2165 | Metadata *getRawScope() const { return getOperand(I: 1); } |
2166 | |
2167 | void replaceScope(DIScope *Scope) { |
2168 | assert(!isUniqued()); |
2169 | setOperand(I: 1, New: Scope); |
2170 | } |
2171 | |
2172 | static bool classof(const Metadata *MD) { |
2173 | return MD->getMetadataID() == DILexicalBlockKind || |
2174 | MD->getMetadataID() == DILexicalBlockFileKind; |
2175 | } |
2176 | }; |
2177 | |
2178 | /// Debug lexical block. |
2179 | /// |
2180 | /// Uses the SubclassData32 Metadata slot. |
2181 | class DILexicalBlock : public DILexicalBlockBase { |
2182 | friend class LLVMContextImpl; |
2183 | friend class MDNode; |
2184 | |
2185 | uint16_t Column; |
2186 | |
2187 | DILexicalBlock(LLVMContext &C, StorageType Storage, unsigned Line, |
2188 | unsigned Column, ArrayRef<Metadata *> Ops) |
2189 | : DILexicalBlockBase(C, DILexicalBlockKind, Storage, Ops), |
2190 | Column(Column) { |
2191 | SubclassData32 = Line; |
2192 | assert(Column < (1u << 16) && "Expected 16-bit column" ); |
2193 | } |
2194 | ~DILexicalBlock() = default; |
2195 | |
2196 | static DILexicalBlock *getImpl(LLVMContext &Context, DILocalScope *Scope, |
2197 | DIFile *File, unsigned Line, unsigned Column, |
2198 | StorageType Storage, |
2199 | bool ShouldCreate = true) { |
2200 | return getImpl(Context, Scope: static_cast<Metadata *>(Scope), |
2201 | File: static_cast<Metadata *>(File), Line, Column, Storage, |
2202 | ShouldCreate); |
2203 | } |
2204 | |
2205 | static DILexicalBlock *getImpl(LLVMContext &Context, Metadata *Scope, |
2206 | Metadata *File, unsigned Line, unsigned Column, |
2207 | StorageType Storage, bool ShouldCreate = true); |
2208 | |
2209 | TempDILexicalBlock cloneImpl() const { |
2210 | return getTemporary(Context&: getContext(), Scope: getScope(), File: getFile(), Line: getLine(), |
2211 | Column: getColumn()); |
2212 | } |
2213 | |
2214 | public: |
2215 | DEFINE_MDNODE_GET(DILexicalBlock, |
2216 | (DILocalScope * Scope, DIFile *File, unsigned Line, |
2217 | unsigned Column), |
2218 | (Scope, File, Line, Column)) |
2219 | DEFINE_MDNODE_GET(DILexicalBlock, |
2220 | (Metadata * Scope, Metadata *File, unsigned Line, |
2221 | unsigned Column), |
2222 | (Scope, File, Line, Column)) |
2223 | |
2224 | TempDILexicalBlock clone() const { return cloneImpl(); } |
2225 | |
2226 | unsigned getLine() const { return SubclassData32; } |
2227 | unsigned getColumn() const { return Column; } |
2228 | |
2229 | static bool classof(const Metadata *MD) { |
2230 | return MD->getMetadataID() == DILexicalBlockKind; |
2231 | } |
2232 | }; |
2233 | |
2234 | class DILexicalBlockFile : public DILexicalBlockBase { |
2235 | friend class LLVMContextImpl; |
2236 | friend class MDNode; |
2237 | |
2238 | DILexicalBlockFile(LLVMContext &C, StorageType Storage, |
2239 | unsigned Discriminator, ArrayRef<Metadata *> Ops) |
2240 | : DILexicalBlockBase(C, DILexicalBlockFileKind, Storage, Ops) { |
2241 | SubclassData32 = Discriminator; |
2242 | } |
2243 | ~DILexicalBlockFile() = default; |
2244 | |
2245 | static DILexicalBlockFile *getImpl(LLVMContext &Context, DILocalScope *Scope, |
2246 | DIFile *File, unsigned Discriminator, |
2247 | StorageType Storage, |
2248 | bool ShouldCreate = true) { |
2249 | return getImpl(Context, Scope: static_cast<Metadata *>(Scope), |
2250 | File: static_cast<Metadata *>(File), Discriminator, Storage, |
2251 | ShouldCreate); |
2252 | } |
2253 | |
2254 | static DILexicalBlockFile *getImpl(LLVMContext &Context, Metadata *Scope, |
2255 | Metadata *File, unsigned Discriminator, |
2256 | StorageType Storage, |
2257 | bool ShouldCreate = true); |
2258 | |
2259 | TempDILexicalBlockFile cloneImpl() const { |
2260 | return getTemporary(Context&: getContext(), Scope: getScope(), File: getFile(), |
2261 | Discriminator: getDiscriminator()); |
2262 | } |
2263 | |
2264 | public: |
2265 | DEFINE_MDNODE_GET(DILexicalBlockFile, |
2266 | (DILocalScope * Scope, DIFile *File, |
2267 | unsigned Discriminator), |
2268 | (Scope, File, Discriminator)) |
2269 | DEFINE_MDNODE_GET(DILexicalBlockFile, |
2270 | (Metadata * Scope, Metadata *File, unsigned Discriminator), |
2271 | (Scope, File, Discriminator)) |
2272 | |
2273 | TempDILexicalBlockFile clone() const { return cloneImpl(); } |
2274 | unsigned getDiscriminator() const { return SubclassData32; } |
2275 | |
2276 | static bool classof(const Metadata *MD) { |
2277 | return MD->getMetadataID() == DILexicalBlockFileKind; |
2278 | } |
2279 | }; |
2280 | |
2281 | unsigned DILocation::getDiscriminator() const { |
2282 | if (auto *F = dyn_cast<DILexicalBlockFile>(Val: getScope())) |
2283 | return F->getDiscriminator(); |
2284 | return 0; |
2285 | } |
2286 | |
2287 | const DILocation * |
2288 | DILocation::cloneWithDiscriminator(unsigned Discriminator) const { |
2289 | DIScope *Scope = getScope(); |
2290 | // Skip all parent DILexicalBlockFile that already have a discriminator |
2291 | // assigned. We do not want to have nested DILexicalBlockFiles that have |
2292 | // mutliple discriminators because only the leaf DILexicalBlockFile's |
2293 | // dominator will be used. |
2294 | for (auto *LBF = dyn_cast<DILexicalBlockFile>(Val: Scope); |
2295 | LBF && LBF->getDiscriminator() != 0; |
2296 | LBF = dyn_cast<DILexicalBlockFile>(Val: Scope)) |
2297 | Scope = LBF->getScope(); |
2298 | DILexicalBlockFile *NewScope = |
2299 | DILexicalBlockFile::get(Context&: getContext(), Scope, File: getFile(), Discriminator); |
2300 | return DILocation::get(Context&: getContext(), Line: getLine(), Column: getColumn(), Scope: NewScope, |
2301 | InlinedAt: getInlinedAt()); |
2302 | } |
2303 | |
2304 | unsigned DILocation::getBaseDiscriminator() const { |
2305 | return getBaseDiscriminatorFromDiscriminator(D: getDiscriminator(), |
2306 | IsFSDiscriminator: EnableFSDiscriminator); |
2307 | } |
2308 | |
2309 | unsigned DILocation::getDuplicationFactor() const { |
2310 | return getDuplicationFactorFromDiscriminator(D: getDiscriminator()); |
2311 | } |
2312 | |
2313 | unsigned DILocation::getCopyIdentifier() const { |
2314 | return getCopyIdentifierFromDiscriminator(D: getDiscriminator()); |
2315 | } |
2316 | |
2317 | std::optional<const DILocation *> |
2318 | DILocation::cloneWithBaseDiscriminator(unsigned D) const { |
2319 | unsigned BD, DF, CI; |
2320 | |
2321 | if (EnableFSDiscriminator) { |
2322 | BD = getBaseDiscriminator(); |
2323 | if (D == BD) |
2324 | return this; |
2325 | return cloneWithDiscriminator(Discriminator: D); |
2326 | } |
2327 | |
2328 | decodeDiscriminator(D: getDiscriminator(), BD, DF, CI); |
2329 | if (D == BD) |
2330 | return this; |
2331 | if (std::optional<unsigned> Encoded = encodeDiscriminator(BD: D, DF, CI)) |
2332 | return cloneWithDiscriminator(Discriminator: *Encoded); |
2333 | return std::nullopt; |
2334 | } |
2335 | |
2336 | std::optional<const DILocation *> |
2337 | DILocation::cloneByMultiplyingDuplicationFactor(unsigned DF) const { |
2338 | assert(!EnableFSDiscriminator && "FSDiscriminator should not call this." ); |
2339 | // Do no interfere with pseudo probes. Pseudo probe doesn't need duplication |
2340 | // factor support as samples collected on cloned probes will be aggregated. |
2341 | // Also pseudo probe at a callsite uses the dwarf discriminator to store |
2342 | // pseudo probe related information, such as the probe id. |
2343 | if (isPseudoProbeDiscriminator(Discriminator: getDiscriminator())) |
2344 | return this; |
2345 | |
2346 | DF *= getDuplicationFactor(); |
2347 | if (DF <= 1) |
2348 | return this; |
2349 | |
2350 | unsigned BD = getBaseDiscriminator(); |
2351 | unsigned CI = getCopyIdentifier(); |
2352 | if (std::optional<unsigned> D = encodeDiscriminator(BD, DF, CI)) |
2353 | return cloneWithDiscriminator(Discriminator: *D); |
2354 | return std::nullopt; |
2355 | } |
2356 | |
2357 | /// Debug lexical block. |
2358 | /// |
2359 | /// Uses the SubclassData1 Metadata slot. |
2360 | class DINamespace : public DIScope { |
2361 | friend class LLVMContextImpl; |
2362 | friend class MDNode; |
2363 | |
2364 | DINamespace(LLVMContext &Context, StorageType Storage, bool ExportSymbols, |
2365 | ArrayRef<Metadata *> Ops); |
2366 | ~DINamespace() = default; |
2367 | |
2368 | static DINamespace *getImpl(LLVMContext &Context, DIScope *Scope, |
2369 | StringRef Name, bool ExportSymbols, |
2370 | StorageType Storage, bool ShouldCreate = true) { |
2371 | return getImpl(Context, Scope, Name: getCanonicalMDString(Context, S: Name), |
2372 | ExportSymbols, Storage, ShouldCreate); |
2373 | } |
2374 | static DINamespace *getImpl(LLVMContext &Context, Metadata *Scope, |
2375 | MDString *Name, bool ExportSymbols, |
2376 | StorageType Storage, bool ShouldCreate = true); |
2377 | |
2378 | TempDINamespace cloneImpl() const { |
2379 | return getTemporary(Context&: getContext(), Scope: getScope(), Name: getName(), |
2380 | ExportSymbols: getExportSymbols()); |
2381 | } |
2382 | |
2383 | public: |
2384 | DEFINE_MDNODE_GET(DINamespace, |
2385 | (DIScope * Scope, StringRef Name, bool ExportSymbols), |
2386 | (Scope, Name, ExportSymbols)) |
2387 | DEFINE_MDNODE_GET(DINamespace, |
2388 | (Metadata * Scope, MDString *Name, bool ExportSymbols), |
2389 | (Scope, Name, ExportSymbols)) |
2390 | |
2391 | TempDINamespace clone() const { return cloneImpl(); } |
2392 | |
2393 | bool getExportSymbols() const { return SubclassData1; } |
2394 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
2395 | StringRef getName() const { return getStringOperand(I: 2); } |
2396 | |
2397 | Metadata *getRawScope() const { return getOperand(I: 1); } |
2398 | MDString *getRawName() const { return getOperandAs<MDString>(I: 2); } |
2399 | |
2400 | static bool classof(const Metadata *MD) { |
2401 | return MD->getMetadataID() == DINamespaceKind; |
2402 | } |
2403 | }; |
2404 | |
2405 | /// Represents a module in the programming language, for example, a Clang |
2406 | /// module, or a Fortran module. |
2407 | /// |
2408 | /// Uses the SubclassData1 and SubclassData32 Metadata slots. |
2409 | class DIModule : public DIScope { |
2410 | friend class LLVMContextImpl; |
2411 | friend class MDNode; |
2412 | |
2413 | DIModule(LLVMContext &Context, StorageType Storage, unsigned LineNo, |
2414 | bool IsDecl, ArrayRef<Metadata *> Ops); |
2415 | ~DIModule() = default; |
2416 | |
2417 | static DIModule *getImpl(LLVMContext &Context, DIFile *File, DIScope *Scope, |
2418 | StringRef Name, StringRef ConfigurationMacros, |
2419 | StringRef IncludePath, StringRef APINotesFile, |
2420 | unsigned LineNo, bool IsDecl, StorageType Storage, |
2421 | bool ShouldCreate = true) { |
2422 | return getImpl(Context, File, Scope, Name: getCanonicalMDString(Context, S: Name), |
2423 | ConfigurationMacros: getCanonicalMDString(Context, S: ConfigurationMacros), |
2424 | IncludePath: getCanonicalMDString(Context, S: IncludePath), |
2425 | APINotesFile: getCanonicalMDString(Context, S: APINotesFile), LineNo, IsDecl, |
2426 | Storage, ShouldCreate); |
2427 | } |
2428 | static DIModule *getImpl(LLVMContext &Context, Metadata *File, |
2429 | Metadata *Scope, MDString *Name, |
2430 | MDString *ConfigurationMacros, MDString *IncludePath, |
2431 | MDString *APINotesFile, unsigned LineNo, bool IsDecl, |
2432 | StorageType Storage, bool ShouldCreate = true); |
2433 | |
2434 | TempDIModule cloneImpl() const { |
2435 | return getTemporary(Context&: getContext(), File: getFile(), Scope: getScope(), Name: getName(), |
2436 | ConfigurationMacros: getConfigurationMacros(), IncludePath: getIncludePath(), |
2437 | APINotesFile: getAPINotesFile(), LineNo: getLineNo(), IsDecl: getIsDecl()); |
2438 | } |
2439 | |
2440 | public: |
2441 | DEFINE_MDNODE_GET(DIModule, |
2442 | (DIFile * File, DIScope *Scope, StringRef Name, |
2443 | StringRef ConfigurationMacros, StringRef IncludePath, |
2444 | StringRef APINotesFile, unsigned LineNo, |
2445 | bool IsDecl = false), |
2446 | (File, Scope, Name, ConfigurationMacros, IncludePath, |
2447 | APINotesFile, LineNo, IsDecl)) |
2448 | DEFINE_MDNODE_GET(DIModule, |
2449 | (Metadata * File, Metadata *Scope, MDString *Name, |
2450 | MDString *ConfigurationMacros, MDString *IncludePath, |
2451 | MDString *APINotesFile, unsigned LineNo, |
2452 | bool IsDecl = false), |
2453 | (File, Scope, Name, ConfigurationMacros, IncludePath, |
2454 | APINotesFile, LineNo, IsDecl)) |
2455 | |
2456 | TempDIModule clone() const { return cloneImpl(); } |
2457 | |
2458 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
2459 | StringRef getName() const { return getStringOperand(I: 2); } |
2460 | StringRef getConfigurationMacros() const { return getStringOperand(I: 3); } |
2461 | StringRef getIncludePath() const { return getStringOperand(I: 4); } |
2462 | StringRef getAPINotesFile() const { return getStringOperand(I: 5); } |
2463 | unsigned getLineNo() const { return SubclassData32; } |
2464 | bool getIsDecl() const { return SubclassData1; } |
2465 | |
2466 | Metadata *getRawScope() const { return getOperand(I: 1); } |
2467 | MDString *getRawName() const { return getOperandAs<MDString>(I: 2); } |
2468 | MDString *getRawConfigurationMacros() const { |
2469 | return getOperandAs<MDString>(I: 3); |
2470 | } |
2471 | MDString *getRawIncludePath() const { return getOperandAs<MDString>(I: 4); } |
2472 | MDString *getRawAPINotesFile() const { return getOperandAs<MDString>(I: 5); } |
2473 | |
2474 | static bool classof(const Metadata *MD) { |
2475 | return MD->getMetadataID() == DIModuleKind; |
2476 | } |
2477 | }; |
2478 | |
2479 | /// Base class for template parameters. |
2480 | /// |
2481 | /// Uses the SubclassData1 Metadata slot. |
2482 | class DITemplateParameter : public DINode { |
2483 | protected: |
2484 | DITemplateParameter(LLVMContext &Context, unsigned ID, StorageType Storage, |
2485 | unsigned Tag, bool IsDefault, ArrayRef<Metadata *> Ops) |
2486 | : DINode(Context, ID, Storage, Tag, Ops) { |
2487 | SubclassData1 = IsDefault; |
2488 | } |
2489 | ~DITemplateParameter() = default; |
2490 | |
2491 | public: |
2492 | StringRef getName() const { return getStringOperand(I: 0); } |
2493 | DIType *getType() const { return cast_or_null<DIType>(Val: getRawType()); } |
2494 | |
2495 | MDString *getRawName() const { return getOperandAs<MDString>(I: 0); } |
2496 | Metadata *getRawType() const { return getOperand(I: 1); } |
2497 | bool isDefault() const { return SubclassData1; } |
2498 | |
2499 | static bool classof(const Metadata *MD) { |
2500 | return MD->getMetadataID() == DITemplateTypeParameterKind || |
2501 | MD->getMetadataID() == DITemplateValueParameterKind; |
2502 | } |
2503 | }; |
2504 | |
2505 | class DITemplateTypeParameter : public DITemplateParameter { |
2506 | friend class LLVMContextImpl; |
2507 | friend class MDNode; |
2508 | |
2509 | DITemplateTypeParameter(LLVMContext &Context, StorageType Storage, |
2510 | bool IsDefault, ArrayRef<Metadata *> Ops); |
2511 | ~DITemplateTypeParameter() = default; |
2512 | |
2513 | static DITemplateTypeParameter *getImpl(LLVMContext &Context, StringRef Name, |
2514 | DIType *Type, bool IsDefault, |
2515 | StorageType Storage, |
2516 | bool ShouldCreate = true) { |
2517 | return getImpl(Context, Name: getCanonicalMDString(Context, S: Name), Type, |
2518 | IsDefault, Storage, ShouldCreate); |
2519 | } |
2520 | static DITemplateTypeParameter *getImpl(LLVMContext &Context, MDString *Name, |
2521 | Metadata *Type, bool IsDefault, |
2522 | StorageType Storage, |
2523 | bool ShouldCreate = true); |
2524 | |
2525 | TempDITemplateTypeParameter cloneImpl() const { |
2526 | return getTemporary(Context&: getContext(), Name: getName(), Type: getType(), IsDefault: isDefault()); |
2527 | } |
2528 | |
2529 | public: |
2530 | DEFINE_MDNODE_GET(DITemplateTypeParameter, |
2531 | (StringRef Name, DIType *Type, bool IsDefault), |
2532 | (Name, Type, IsDefault)) |
2533 | DEFINE_MDNODE_GET(DITemplateTypeParameter, |
2534 | (MDString * Name, Metadata *Type, bool IsDefault), |
2535 | (Name, Type, IsDefault)) |
2536 | |
2537 | TempDITemplateTypeParameter clone() const { return cloneImpl(); } |
2538 | |
2539 | static bool classof(const Metadata *MD) { |
2540 | return MD->getMetadataID() == DITemplateTypeParameterKind; |
2541 | } |
2542 | }; |
2543 | |
2544 | class DITemplateValueParameter : public DITemplateParameter { |
2545 | friend class LLVMContextImpl; |
2546 | friend class MDNode; |
2547 | |
2548 | DITemplateValueParameter(LLVMContext &Context, StorageType Storage, |
2549 | unsigned Tag, bool IsDefault, |
2550 | ArrayRef<Metadata *> Ops) |
2551 | : DITemplateParameter(Context, DITemplateValueParameterKind, Storage, Tag, |
2552 | IsDefault, Ops) {} |
2553 | ~DITemplateValueParameter() = default; |
2554 | |
2555 | static DITemplateValueParameter *getImpl(LLVMContext &Context, unsigned Tag, |
2556 | StringRef Name, DIType *Type, |
2557 | bool IsDefault, Metadata *Value, |
2558 | StorageType Storage, |
2559 | bool ShouldCreate = true) { |
2560 | return getImpl(Context, Tag, Name: getCanonicalMDString(Context, S: Name), Type, |
2561 | IsDefault, Value, Storage, ShouldCreate); |
2562 | } |
2563 | static DITemplateValueParameter *getImpl(LLVMContext &Context, unsigned Tag, |
2564 | MDString *Name, Metadata *Type, |
2565 | bool IsDefault, Metadata *Value, |
2566 | StorageType Storage, |
2567 | bool ShouldCreate = true); |
2568 | |
2569 | TempDITemplateValueParameter cloneImpl() const { |
2570 | return getTemporary(Context&: getContext(), Tag: getTag(), Name: getName(), Type: getType(), |
2571 | IsDefault: isDefault(), Value: getValue()); |
2572 | } |
2573 | |
2574 | public: |
2575 | DEFINE_MDNODE_GET(DITemplateValueParameter, |
2576 | (unsigned Tag, StringRef Name, DIType *Type, bool IsDefault, |
2577 | Metadata *Value), |
2578 | (Tag, Name, Type, IsDefault, Value)) |
2579 | DEFINE_MDNODE_GET(DITemplateValueParameter, |
2580 | (unsigned Tag, MDString *Name, Metadata *Type, |
2581 | bool IsDefault, Metadata *Value), |
2582 | (Tag, Name, Type, IsDefault, Value)) |
2583 | |
2584 | TempDITemplateValueParameter clone() const { return cloneImpl(); } |
2585 | |
2586 | Metadata *getValue() const { return getOperand(I: 2); } |
2587 | |
2588 | static bool classof(const Metadata *MD) { |
2589 | return MD->getMetadataID() == DITemplateValueParameterKind; |
2590 | } |
2591 | }; |
2592 | |
2593 | /// Base class for variables. |
2594 | /// |
2595 | /// Uses the SubclassData32 Metadata slot. |
2596 | class DIVariable : public DINode { |
2597 | unsigned Line; |
2598 | |
2599 | protected: |
2600 | DIVariable(LLVMContext &C, unsigned ID, StorageType Storage, signed Line, |
2601 | ArrayRef<Metadata *> Ops, uint32_t AlignInBits = 0); |
2602 | ~DIVariable() = default; |
2603 | |
2604 | public: |
2605 | unsigned getLine() const { return Line; } |
2606 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
2607 | StringRef getName() const { return getStringOperand(I: 1); } |
2608 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
2609 | DIType *getType() const { return cast_or_null<DIType>(Val: getRawType()); } |
2610 | uint32_t getAlignInBits() const { return SubclassData32; } |
2611 | uint32_t getAlignInBytes() const { return getAlignInBits() / CHAR_BIT; } |
2612 | /// Determines the size of the variable's type. |
2613 | std::optional<uint64_t> getSizeInBits() const; |
2614 | |
2615 | /// Return the signedness of this variable's type, or std::nullopt if this |
2616 | /// type is neither signed nor unsigned. |
2617 | std::optional<DIBasicType::Signedness> getSignedness() const { |
2618 | if (auto *BT = dyn_cast<DIBasicType>(Val: getType())) |
2619 | return BT->getSignedness(); |
2620 | return std::nullopt; |
2621 | } |
2622 | |
2623 | StringRef getFilename() const { |
2624 | if (auto *F = getFile()) |
2625 | return F->getFilename(); |
2626 | return "" ; |
2627 | } |
2628 | |
2629 | StringRef getDirectory() const { |
2630 | if (auto *F = getFile()) |
2631 | return F->getDirectory(); |
2632 | return "" ; |
2633 | } |
2634 | |
2635 | std::optional<StringRef> getSource() const { |
2636 | if (auto *F = getFile()) |
2637 | return F->getSource(); |
2638 | return std::nullopt; |
2639 | } |
2640 | |
2641 | Metadata *getRawScope() const { return getOperand(I: 0); } |
2642 | MDString *getRawName() const { return getOperandAs<MDString>(I: 1); } |
2643 | Metadata *getRawFile() const { return getOperand(I: 2); } |
2644 | Metadata *getRawType() const { return getOperand(I: 3); } |
2645 | |
2646 | static bool classof(const Metadata *MD) { |
2647 | return MD->getMetadataID() == DILocalVariableKind || |
2648 | MD->getMetadataID() == DIGlobalVariableKind; |
2649 | } |
2650 | }; |
2651 | |
2652 | /// DWARF expression. |
2653 | /// |
2654 | /// This is (almost) a DWARF expression that modifies the location of a |
2655 | /// variable, or the location of a single piece of a variable, or (when using |
2656 | /// DW_OP_stack_value) is the constant variable value. |
2657 | /// |
2658 | /// TODO: Co-allocate the expression elements. |
2659 | /// TODO: Separate from MDNode, or otherwise drop Distinct and Temporary |
2660 | /// storage types. |
2661 | class DIExpression : public MDNode { |
2662 | friend class LLVMContextImpl; |
2663 | friend class MDNode; |
2664 | |
2665 | std::vector<uint64_t> Elements; |
2666 | |
2667 | DIExpression(LLVMContext &C, StorageType Storage, ArrayRef<uint64_t> Elements) |
2668 | : MDNode(C, DIExpressionKind, Storage, std::nullopt), |
2669 | Elements(Elements.begin(), Elements.end()) {} |
2670 | ~DIExpression() = default; |
2671 | |
2672 | static DIExpression *getImpl(LLVMContext &Context, |
2673 | ArrayRef<uint64_t> Elements, StorageType Storage, |
2674 | bool ShouldCreate = true); |
2675 | |
2676 | TempDIExpression cloneImpl() const { |
2677 | return getTemporary(Context&: getContext(), Elements: getElements()); |
2678 | } |
2679 | |
2680 | public: |
2681 | DEFINE_MDNODE_GET(DIExpression, (ArrayRef<uint64_t> Elements), (Elements)) |
2682 | |
2683 | TempDIExpression clone() const { return cloneImpl(); } |
2684 | |
2685 | ArrayRef<uint64_t> getElements() const { return Elements; } |
2686 | |
2687 | unsigned getNumElements() const { return Elements.size(); } |
2688 | |
2689 | uint64_t getElement(unsigned I) const { |
2690 | assert(I < Elements.size() && "Index out of range" ); |
2691 | return Elements[I]; |
2692 | } |
2693 | |
2694 | enum SignedOrUnsignedConstant { SignedConstant, UnsignedConstant }; |
2695 | /// Determine whether this represents a constant value, if so |
2696 | // return it's sign information. |
2697 | std::optional<SignedOrUnsignedConstant> isConstant() const; |
2698 | |
2699 | /// Return the number of unique location operands referred to (via |
2700 | /// DW_OP_LLVM_arg) in this expression; this is not necessarily the number of |
2701 | /// instances of DW_OP_LLVM_arg within the expression. |
2702 | /// For example, for the expression: |
2703 | /// (DW_OP_LLVM_arg 0, DW_OP_LLVM_arg 1, DW_OP_plus, |
2704 | /// DW_OP_LLVM_arg 0, DW_OP_mul) |
2705 | /// This function would return 2, as there are two unique location operands |
2706 | /// (0 and 1). |
2707 | uint64_t getNumLocationOperands() const; |
2708 | |
2709 | using element_iterator = ArrayRef<uint64_t>::iterator; |
2710 | |
2711 | element_iterator elements_begin() const { return getElements().begin(); } |
2712 | element_iterator elements_end() const { return getElements().end(); } |
2713 | |
2714 | /// A lightweight wrapper around an expression operand. |
2715 | /// |
2716 | /// TODO: Store arguments directly and change \a DIExpression to store a |
2717 | /// range of these. |
2718 | class ExprOperand { |
2719 | const uint64_t *Op = nullptr; |
2720 | |
2721 | public: |
2722 | ExprOperand() = default; |
2723 | explicit ExprOperand(const uint64_t *Op) : Op(Op) {} |
2724 | |
2725 | const uint64_t *get() const { return Op; } |
2726 | |
2727 | /// Get the operand code. |
2728 | uint64_t getOp() const { return *Op; } |
2729 | |
2730 | /// Get an argument to the operand. |
2731 | /// |
2732 | /// Never returns the operand itself. |
2733 | uint64_t getArg(unsigned I) const { return Op[I + 1]; } |
2734 | |
2735 | unsigned getNumArgs() const { return getSize() - 1; } |
2736 | |
2737 | /// Return the size of the operand. |
2738 | /// |
2739 | /// Return the number of elements in the operand (1 + args). |
2740 | unsigned getSize() const; |
2741 | |
2742 | /// Append the elements of this operand to \p V. |
2743 | void appendToVector(SmallVectorImpl<uint64_t> &V) const { |
2744 | V.append(in_start: get(), in_end: get() + getSize()); |
2745 | } |
2746 | }; |
2747 | |
2748 | /// An iterator for expression operands. |
2749 | class expr_op_iterator { |
2750 | ExprOperand Op; |
2751 | |
2752 | public: |
2753 | using iterator_category = std::input_iterator_tag; |
2754 | using value_type = ExprOperand; |
2755 | using difference_type = std::ptrdiff_t; |
2756 | using pointer = value_type *; |
2757 | using reference = value_type &; |
2758 | |
2759 | expr_op_iterator() = default; |
2760 | explicit expr_op_iterator(element_iterator I) : Op(I) {} |
2761 | |
2762 | element_iterator getBase() const { return Op.get(); } |
2763 | const ExprOperand &operator*() const { return Op; } |
2764 | const ExprOperand *operator->() const { return &Op; } |
2765 | |
2766 | expr_op_iterator &operator++() { |
2767 | increment(); |
2768 | return *this; |
2769 | } |
2770 | expr_op_iterator operator++(int) { |
2771 | expr_op_iterator T(*this); |
2772 | increment(); |
2773 | return T; |
2774 | } |
2775 | |
2776 | /// Get the next iterator. |
2777 | /// |
2778 | /// \a std::next() doesn't work because this is technically an |
2779 | /// input_iterator, but it's a perfectly valid operation. This is an |
2780 | /// accessor to provide the same functionality. |
2781 | expr_op_iterator getNext() const { return ++expr_op_iterator(*this); } |
2782 | |
2783 | bool operator==(const expr_op_iterator &X) const { |
2784 | return getBase() == X.getBase(); |
2785 | } |
2786 | bool operator!=(const expr_op_iterator &X) const { |
2787 | return getBase() != X.getBase(); |
2788 | } |
2789 | |
2790 | private: |
2791 | void increment() { Op = ExprOperand(getBase() + Op.getSize()); } |
2792 | }; |
2793 | |
2794 | /// Visit the elements via ExprOperand wrappers. |
2795 | /// |
2796 | /// These range iterators visit elements through \a ExprOperand wrappers. |
2797 | /// This is not guaranteed to be a valid range unless \a isValid() gives \c |
2798 | /// true. |
2799 | /// |
2800 | /// \pre \a isValid() gives \c true. |
2801 | /// @{ |
2802 | expr_op_iterator expr_op_begin() const { |
2803 | return expr_op_iterator(elements_begin()); |
2804 | } |
2805 | expr_op_iterator expr_op_end() const { |
2806 | return expr_op_iterator(elements_end()); |
2807 | } |
2808 | iterator_range<expr_op_iterator> expr_ops() const { |
2809 | return {expr_op_begin(), expr_op_end()}; |
2810 | } |
2811 | /// @} |
2812 | |
2813 | bool isValid() const; |
2814 | |
2815 | static bool classof(const Metadata *MD) { |
2816 | return MD->getMetadataID() == DIExpressionKind; |
2817 | } |
2818 | |
2819 | /// Return whether the first element a DW_OP_deref. |
2820 | bool startsWithDeref() const; |
2821 | |
2822 | /// Return whether there is exactly one operator and it is a DW_OP_deref; |
2823 | bool isDeref() const; |
2824 | |
2825 | /// Holds the characteristics of one fragment of a larger variable. |
2826 | struct FragmentInfo { |
2827 | FragmentInfo() = default; |
2828 | FragmentInfo(uint64_t SizeInBits, uint64_t OffsetInBits) |
2829 | : SizeInBits(SizeInBits), OffsetInBits(OffsetInBits) {} |
2830 | uint64_t SizeInBits; |
2831 | uint64_t OffsetInBits; |
2832 | /// Return the index of the first bit of the fragment. |
2833 | uint64_t startInBits() const { return OffsetInBits; } |
2834 | /// Return the index of the bit after the end of the fragment, e.g. for |
2835 | /// fragment offset=16 and size=32 return their sum, 48. |
2836 | uint64_t endInBits() const { return OffsetInBits + SizeInBits; } |
2837 | |
2838 | /// Returns a zero-sized fragment if A and B don't intersect. |
2839 | static DIExpression::FragmentInfo intersect(DIExpression::FragmentInfo A, |
2840 | DIExpression::FragmentInfo B) { |
2841 | uint64_t StartInBits = std::max(a: A.OffsetInBits, b: B.OffsetInBits); |
2842 | uint64_t EndInBits = std::min(a: A.endInBits(), b: B.endInBits()); |
2843 | if (EndInBits <= StartInBits) |
2844 | return {0, 0}; |
2845 | return DIExpression::FragmentInfo(EndInBits - StartInBits, StartInBits); |
2846 | } |
2847 | }; |
2848 | |
2849 | /// Retrieve the details of this fragment expression. |
2850 | static std::optional<FragmentInfo> getFragmentInfo(expr_op_iterator Start, |
2851 | expr_op_iterator End); |
2852 | |
2853 | /// Retrieve the details of this fragment expression. |
2854 | std::optional<FragmentInfo> getFragmentInfo() const { |
2855 | return getFragmentInfo(Start: expr_op_begin(), End: expr_op_end()); |
2856 | } |
2857 | |
2858 | /// Return whether this is a piece of an aggregate variable. |
2859 | bool isFragment() const { return getFragmentInfo().has_value(); } |
2860 | |
2861 | /// Return whether this is an implicit location description. |
2862 | bool isImplicit() const; |
2863 | |
2864 | /// Return whether the location is computed on the expression stack, meaning |
2865 | /// it cannot be a simple register location. |
2866 | bool isComplex() const; |
2867 | |
2868 | /// Return whether the evaluated expression makes use of a single location at |
2869 | /// the start of the expression, i.e. if it contains only a single |
2870 | /// DW_OP_LLVM_arg op as its first operand, or if it contains none. |
2871 | bool isSingleLocationExpression() const; |
2872 | |
2873 | /// Returns a reference to the elements contained in this expression, skipping |
2874 | /// past the leading `DW_OP_LLVM_arg, 0` if one is present. |
2875 | /// Similar to `convertToNonVariadicExpression`, but faster and cheaper - it |
2876 | /// does not check whether the expression is a single-location expression, and |
2877 | /// it returns elements rather than creating a new DIExpression. |
2878 | std::optional<ArrayRef<uint64_t>> getSingleLocationExpressionElements() const; |
2879 | |
2880 | /// Removes all elements from \p Expr that do not apply to an undef debug |
2881 | /// value, which includes every operator that computes the value/location on |
2882 | /// the DWARF stack, including any DW_OP_LLVM_arg elements (making the result |
2883 | /// of this function always a single-location expression) while leaving |
2884 | /// everything that defines what the computed value applies to, i.e. the |
2885 | /// fragment information. |
2886 | static const DIExpression *convertToUndefExpression(const DIExpression *Expr); |
2887 | |
2888 | /// If \p Expr is a non-variadic expression (i.e. one that does not contain |
2889 | /// DW_OP_LLVM_arg), returns \p Expr converted to variadic form by adding a |
2890 | /// leading [DW_OP_LLVM_arg, 0] to the expression; otherwise returns \p Expr. |
2891 | static const DIExpression * |
2892 | convertToVariadicExpression(const DIExpression *Expr); |
2893 | |
2894 | /// If \p Expr is a valid single-location expression, i.e. it refers to only a |
2895 | /// single debug operand at the start of the expression, then return that |
2896 | /// expression in a non-variadic form by removing DW_OP_LLVM_arg from the |
2897 | /// expression if it is present; otherwise returns std::nullopt. |
2898 | /// See also `getSingleLocationExpressionElements` above, which skips |
2899 | /// checking `isSingleLocationExpression` and returns a list of elements |
2900 | /// rather than a DIExpression. |
2901 | static std::optional<const DIExpression *> |
2902 | convertToNonVariadicExpression(const DIExpression *Expr); |
2903 | |
2904 | /// Inserts the elements of \p Expr into \p Ops modified to a canonical form, |
2905 | /// which uses DW_OP_LLVM_arg (i.e. is a variadic expression) and folds the |
2906 | /// implied derefence from the \p IsIndirect flag into the expression. This |
2907 | /// allows us to check equivalence between expressions with differing |
2908 | /// directness or variadicness. |
2909 | static void canonicalizeExpressionOps(SmallVectorImpl<uint64_t> &Ops, |
2910 | const DIExpression *Expr, |
2911 | bool IsIndirect); |
2912 | |
2913 | /// Determines whether two debug values should produce equivalent DWARF |
2914 | /// expressions, using their DIExpressions and directness, ignoring the |
2915 | /// differences between otherwise identical expressions in variadic and |
2916 | /// non-variadic form and not considering the debug operands. |
2917 | /// \p FirstExpr is the DIExpression for the first debug value. |
2918 | /// \p FirstIndirect should be true if the first debug value is indirect; in |
2919 | /// IR this should be true for dbg.declare intrinsics and false for |
2920 | /// dbg.values, and in MIR this should be true only for DBG_VALUE instructions |
2921 | /// whose second operand is an immediate value. |
2922 | /// \p SecondExpr and \p SecondIndirect have the same meaning as the prior |
2923 | /// arguments, but apply to the second debug value. |
2924 | static bool isEqualExpression(const DIExpression *FirstExpr, |
2925 | bool FirstIndirect, |
2926 | const DIExpression *SecondExpr, |
2927 | bool SecondIndirect); |
2928 | |
2929 | /// Append \p Ops with operations to apply the \p Offset. |
2930 | static void appendOffset(SmallVectorImpl<uint64_t> &Ops, int64_t Offset); |
2931 | |
2932 | /// If this is a constant offset, extract it. If there is no expression, |
2933 | /// return true with an offset of zero. |
2934 | bool (int64_t &Offset) const; |
2935 | |
2936 | /// Returns true iff this DIExpression contains at least one instance of |
2937 | /// `DW_OP_LLVM_arg, n` for all n in [0, N). |
2938 | bool hasAllLocationOps(unsigned N) const; |
2939 | |
2940 | /// Checks if the last 4 elements of the expression are DW_OP_constu <DWARF |
2941 | /// Address Space> DW_OP_swap DW_OP_xderef and extracts the <DWARF Address |
2942 | /// Space>. |
2943 | static const DIExpression *(const DIExpression *Expr, |
2944 | unsigned &AddrClass); |
2945 | |
2946 | /// Used for DIExpression::prepend. |
2947 | enum PrependOps : uint8_t { |
2948 | ApplyOffset = 0, |
2949 | DerefBefore = 1 << 0, |
2950 | DerefAfter = 1 << 1, |
2951 | StackValue = 1 << 2, |
2952 | EntryValue = 1 << 3 |
2953 | }; |
2954 | |
2955 | /// Prepend \p DIExpr with a deref and offset operation and optionally turn it |
2956 | /// into a stack value or/and an entry value. |
2957 | static DIExpression *prepend(const DIExpression *Expr, uint8_t Flags, |
2958 | int64_t Offset = 0); |
2959 | |
2960 | /// Prepend \p DIExpr with the given opcodes and optionally turn it into a |
2961 | /// stack value. |
2962 | static DIExpression *prependOpcodes(const DIExpression *Expr, |
2963 | SmallVectorImpl<uint64_t> &Ops, |
2964 | bool StackValue = false, |
2965 | bool EntryValue = false); |
2966 | |
2967 | /// Append the opcodes \p Ops to \p DIExpr. Unlike \ref appendToStack, the |
2968 | /// returned expression is a stack value only if \p DIExpr is a stack value. |
2969 | /// If \p DIExpr describes a fragment, the returned expression will describe |
2970 | /// the same fragment. |
2971 | static DIExpression *append(const DIExpression *Expr, ArrayRef<uint64_t> Ops); |
2972 | |
2973 | /// Convert \p DIExpr into a stack value if it isn't one already by appending |
2974 | /// DW_OP_deref if needed, and appending \p Ops to the resulting expression. |
2975 | /// If \p DIExpr describes a fragment, the returned expression will describe |
2976 | /// the same fragment. |
2977 | static DIExpression *appendToStack(const DIExpression *Expr, |
2978 | ArrayRef<uint64_t> Ops); |
2979 | |
2980 | /// Create a copy of \p Expr by appending the given list of \p Ops to each |
2981 | /// instance of the operand `DW_OP_LLVM_arg, \p ArgNo`. This is used to |
2982 | /// modify a specific location used by \p Expr, such as when salvaging that |
2983 | /// location. |
2984 | static DIExpression *appendOpsToArg(const DIExpression *Expr, |
2985 | ArrayRef<uint64_t> Ops, unsigned ArgNo, |
2986 | bool StackValue = false); |
2987 | |
2988 | /// Create a copy of \p Expr with each instance of |
2989 | /// `DW_OP_LLVM_arg, \p OldArg` replaced with `DW_OP_LLVM_arg, \p NewArg`, |
2990 | /// and each instance of `DW_OP_LLVM_arg, Arg` with `DW_OP_LLVM_arg, Arg - 1` |
2991 | /// for all Arg > \p OldArg. |
2992 | /// This is used when replacing one of the operands of a debug value list |
2993 | /// with another operand in the same list and deleting the old operand. |
2994 | static DIExpression *replaceArg(const DIExpression *Expr, uint64_t OldArg, |
2995 | uint64_t NewArg); |
2996 | |
2997 | /// Create a DIExpression to describe one part of an aggregate variable that |
2998 | /// is fragmented across multiple Values. The DW_OP_LLVM_fragment operation |
2999 | /// will be appended to the elements of \c Expr. If \c Expr already contains |
3000 | /// a \c DW_OP_LLVM_fragment \c OffsetInBits is interpreted as an offset |
3001 | /// into the existing fragment. |
3002 | /// |
3003 | /// \param OffsetInBits Offset of the piece in bits. |
3004 | /// \param SizeInBits Size of the piece in bits. |
3005 | /// \return Creating a fragment expression may fail if \c Expr |
3006 | /// contains arithmetic operations that would be |
3007 | /// truncated. |
3008 | static std::optional<DIExpression *> |
3009 | createFragmentExpression(const DIExpression *Expr, unsigned OffsetInBits, |
3010 | unsigned SizeInBits); |
3011 | |
3012 | /// Determine the relative position of the fragments passed in. |
3013 | /// Returns -1 if this is entirely before Other, 0 if this and Other overlap, |
3014 | /// 1 if this is entirely after Other. |
3015 | static int fragmentCmp(const FragmentInfo &A, const FragmentInfo &B) { |
3016 | uint64_t l1 = A.OffsetInBits; |
3017 | uint64_t l2 = B.OffsetInBits; |
3018 | uint64_t r1 = l1 + A.SizeInBits; |
3019 | uint64_t r2 = l2 + B.SizeInBits; |
3020 | if (r1 <= l2) |
3021 | return -1; |
3022 | else if (r2 <= l1) |
3023 | return 1; |
3024 | else |
3025 | return 0; |
3026 | } |
3027 | |
3028 | using ExtOps = std::array<uint64_t, 6>; |
3029 | |
3030 | /// Returns the ops for a zero- or sign-extension in a DIExpression. |
3031 | static ExtOps getExtOps(unsigned FromSize, unsigned ToSize, bool Signed); |
3032 | |
3033 | /// Append a zero- or sign-extension to \p Expr. Converts the expression to a |
3034 | /// stack value if it isn't one already. |
3035 | static DIExpression *appendExt(const DIExpression *Expr, unsigned FromSize, |
3036 | unsigned ToSize, bool Signed); |
3037 | |
3038 | /// Check if fragments overlap between a pair of FragmentInfos. |
3039 | static bool fragmentsOverlap(const FragmentInfo &A, const FragmentInfo &B) { |
3040 | return fragmentCmp(A, B) == 0; |
3041 | } |
3042 | |
3043 | /// Determine the relative position of the fragments described by this |
3044 | /// DIExpression and \p Other. Calls static fragmentCmp implementation. |
3045 | int fragmentCmp(const DIExpression *Other) const { |
3046 | auto Fragment1 = *getFragmentInfo(); |
3047 | auto Fragment2 = *Other->getFragmentInfo(); |
3048 | return fragmentCmp(A: Fragment1, B: Fragment2); |
3049 | } |
3050 | |
3051 | /// Check if fragments overlap between this DIExpression and \p Other. |
3052 | bool fragmentsOverlap(const DIExpression *Other) const { |
3053 | if (!isFragment() || !Other->isFragment()) |
3054 | return true; |
3055 | return fragmentCmp(Other) == 0; |
3056 | } |
3057 | |
3058 | /// Check if the expression consists of exactly one entry value operand. |
3059 | /// (This is the only configuration of entry values that is supported.) |
3060 | bool isEntryValue() const; |
3061 | |
3062 | /// Try to shorten an expression with an initial constant operand. |
3063 | /// Returns a new expression and constant on success, or the original |
3064 | /// expression and constant on failure. |
3065 | std::pair<DIExpression *, const ConstantInt *> |
3066 | constantFold(const ConstantInt *CI); |
3067 | }; |
3068 | |
3069 | inline bool operator==(const DIExpression::FragmentInfo &A, |
3070 | const DIExpression::FragmentInfo &B) { |
3071 | return std::tie(args: A.SizeInBits, args: A.OffsetInBits) == |
3072 | std::tie(args: B.SizeInBits, args: B.OffsetInBits); |
3073 | } |
3074 | |
3075 | inline bool operator<(const DIExpression::FragmentInfo &A, |
3076 | const DIExpression::FragmentInfo &B) { |
3077 | return std::tie(args: A.SizeInBits, args: A.OffsetInBits) < |
3078 | std::tie(args: B.SizeInBits, args: B.OffsetInBits); |
3079 | } |
3080 | |
3081 | template <> struct DenseMapInfo<DIExpression::FragmentInfo> { |
3082 | using FragInfo = DIExpression::FragmentInfo; |
3083 | static const uint64_t MaxVal = std::numeric_limits<uint64_t>::max(); |
3084 | |
3085 | static inline FragInfo getEmptyKey() { return {MaxVal, MaxVal}; } |
3086 | |
3087 | static inline FragInfo getTombstoneKey() { return {MaxVal - 1, MaxVal - 1}; } |
3088 | |
3089 | static unsigned getHashValue(const FragInfo &Frag) { |
3090 | return (Frag.SizeInBits & 0xffff) << 16 | (Frag.OffsetInBits & 0xffff); |
3091 | } |
3092 | |
3093 | static bool isEqual(const FragInfo &A, const FragInfo &B) { return A == B; } |
3094 | }; |
3095 | |
3096 | /// Global variables. |
3097 | /// |
3098 | /// TODO: Remove DisplayName. It's always equal to Name. |
3099 | class DIGlobalVariable : public DIVariable { |
3100 | friend class LLVMContextImpl; |
3101 | friend class MDNode; |
3102 | |
3103 | bool IsLocalToUnit; |
3104 | bool IsDefinition; |
3105 | |
3106 | DIGlobalVariable(LLVMContext &C, StorageType Storage, unsigned Line, |
3107 | bool IsLocalToUnit, bool IsDefinition, uint32_t AlignInBits, |
3108 | ArrayRef<Metadata *> Ops) |
3109 | : DIVariable(C, DIGlobalVariableKind, Storage, Line, Ops, AlignInBits), |
3110 | IsLocalToUnit(IsLocalToUnit), IsDefinition(IsDefinition) {} |
3111 | ~DIGlobalVariable() = default; |
3112 | |
3113 | static DIGlobalVariable * |
3114 | getImpl(LLVMContext &Context, DIScope *Scope, StringRef Name, |
3115 | StringRef LinkageName, DIFile *File, unsigned Line, DIType *Type, |
3116 | bool IsLocalToUnit, bool IsDefinition, |
3117 | DIDerivedType *StaticDataMemberDeclaration, MDTuple *TemplateParams, |
3118 | uint32_t AlignInBits, DINodeArray Annotations, StorageType Storage, |
3119 | bool ShouldCreate = true) { |
3120 | return getImpl(Context, Scope, Name: getCanonicalMDString(Context, S: Name), |
3121 | LinkageName: getCanonicalMDString(Context, S: LinkageName), File, Line, Type, |
3122 | IsLocalToUnit, IsDefinition, StaticDataMemberDeclaration, |
3123 | TemplateParams: cast_or_null<Metadata>(Val: TemplateParams), AlignInBits, |
3124 | Annotations: Annotations.get(), Storage, ShouldCreate); |
3125 | } |
3126 | static DIGlobalVariable * |
3127 | getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name, |
3128 | MDString *LinkageName, Metadata *File, unsigned Line, Metadata *Type, |
3129 | bool IsLocalToUnit, bool IsDefinition, |
3130 | Metadata *StaticDataMemberDeclaration, Metadata *TemplateParams, |
3131 | uint32_t AlignInBits, Metadata *Annotations, StorageType Storage, |
3132 | bool ShouldCreate = true); |
3133 | |
3134 | TempDIGlobalVariable cloneImpl() const { |
3135 | return getTemporary(Context&: getContext(), Scope: getScope(), Name: getName(), LinkageName: getLinkageName(), |
3136 | File: getFile(), Line: getLine(), Type: getType(), IsLocalToUnit: isLocalToUnit(), |
3137 | IsDefinition: isDefinition(), StaticDataMemberDeclaration: getStaticDataMemberDeclaration(), |
3138 | TemplateParams: getTemplateParams(), AlignInBits: getAlignInBits(), |
3139 | Annotations: getAnnotations()); |
3140 | } |
3141 | |
3142 | public: |
3143 | DEFINE_MDNODE_GET( |
3144 | DIGlobalVariable, |
3145 | (DIScope * Scope, StringRef Name, StringRef LinkageName, DIFile *File, |
3146 | unsigned Line, DIType *Type, bool IsLocalToUnit, bool IsDefinition, |
3147 | DIDerivedType *StaticDataMemberDeclaration, MDTuple *TemplateParams, |
3148 | uint32_t AlignInBits, DINodeArray Annotations), |
3149 | (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit, IsDefinition, |
3150 | StaticDataMemberDeclaration, TemplateParams, AlignInBits, Annotations)) |
3151 | DEFINE_MDNODE_GET( |
3152 | DIGlobalVariable, |
3153 | (Metadata * Scope, MDString *Name, MDString *LinkageName, Metadata *File, |
3154 | unsigned Line, Metadata *Type, bool IsLocalToUnit, bool IsDefinition, |
3155 | Metadata *StaticDataMemberDeclaration, Metadata *TemplateParams, |
3156 | uint32_t AlignInBits, Metadata *Annotations), |
3157 | (Scope, Name, LinkageName, File, Line, Type, IsLocalToUnit, IsDefinition, |
3158 | StaticDataMemberDeclaration, TemplateParams, AlignInBits, Annotations)) |
3159 | |
3160 | TempDIGlobalVariable clone() const { return cloneImpl(); } |
3161 | |
3162 | bool isLocalToUnit() const { return IsLocalToUnit; } |
3163 | bool isDefinition() const { return IsDefinition; } |
3164 | StringRef getDisplayName() const { return getStringOperand(I: 4); } |
3165 | StringRef getLinkageName() const { return getStringOperand(I: 5); } |
3166 | DIDerivedType *getStaticDataMemberDeclaration() const { |
3167 | return cast_or_null<DIDerivedType>(Val: getRawStaticDataMemberDeclaration()); |
3168 | } |
3169 | DINodeArray getAnnotations() const { |
3170 | return cast_or_null<MDTuple>(Val: getRawAnnotations()); |
3171 | } |
3172 | |
3173 | MDString *getRawLinkageName() const { return getOperandAs<MDString>(I: 5); } |
3174 | Metadata *getRawStaticDataMemberDeclaration() const { return getOperand(I: 6); } |
3175 | Metadata *getRawTemplateParams() const { return getOperand(I: 7); } |
3176 | MDTuple *getTemplateParams() const { return getOperandAs<MDTuple>(I: 7); } |
3177 | Metadata *getRawAnnotations() const { return getOperand(I: 8); } |
3178 | |
3179 | static bool classof(const Metadata *MD) { |
3180 | return MD->getMetadataID() == DIGlobalVariableKind; |
3181 | } |
3182 | }; |
3183 | |
3184 | /// Debug common block. |
3185 | /// |
3186 | /// Uses the SubclassData32 Metadata slot. |
3187 | class DICommonBlock : public DIScope { |
3188 | friend class LLVMContextImpl; |
3189 | friend class MDNode; |
3190 | |
3191 | DICommonBlock(LLVMContext &Context, StorageType Storage, unsigned LineNo, |
3192 | ArrayRef<Metadata *> Ops); |
3193 | |
3194 | static DICommonBlock *getImpl(LLVMContext &Context, DIScope *Scope, |
3195 | DIGlobalVariable *Decl, StringRef Name, |
3196 | DIFile *File, unsigned LineNo, |
3197 | StorageType Storage, bool ShouldCreate = true) { |
3198 | return getImpl(Context, Scope, Decl, Name: getCanonicalMDString(Context, S: Name), |
3199 | File, LineNo, Storage, ShouldCreate); |
3200 | } |
3201 | static DICommonBlock *getImpl(LLVMContext &Context, Metadata *Scope, |
3202 | Metadata *Decl, MDString *Name, Metadata *File, |
3203 | unsigned LineNo, StorageType Storage, |
3204 | bool ShouldCreate = true); |
3205 | |
3206 | TempDICommonBlock cloneImpl() const { |
3207 | return getTemporary(Context&: getContext(), Scope: getScope(), Decl: getDecl(), Name: getName(), |
3208 | File: getFile(), LineNo: getLineNo()); |
3209 | } |
3210 | |
3211 | public: |
3212 | DEFINE_MDNODE_GET(DICommonBlock, |
3213 | (DIScope * Scope, DIGlobalVariable *Decl, StringRef Name, |
3214 | DIFile *File, unsigned LineNo), |
3215 | (Scope, Decl, Name, File, LineNo)) |
3216 | DEFINE_MDNODE_GET(DICommonBlock, |
3217 | (Metadata * Scope, Metadata *Decl, MDString *Name, |
3218 | Metadata *File, unsigned LineNo), |
3219 | (Scope, Decl, Name, File, LineNo)) |
3220 | |
3221 | TempDICommonBlock clone() const { return cloneImpl(); } |
3222 | |
3223 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
3224 | DIGlobalVariable *getDecl() const { |
3225 | return cast_or_null<DIGlobalVariable>(Val: getRawDecl()); |
3226 | } |
3227 | StringRef getName() const { return getStringOperand(I: 2); } |
3228 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
3229 | unsigned getLineNo() const { return SubclassData32; } |
3230 | |
3231 | Metadata *getRawScope() const { return getOperand(I: 0); } |
3232 | Metadata *getRawDecl() const { return getOperand(I: 1); } |
3233 | MDString *getRawName() const { return getOperandAs<MDString>(I: 2); } |
3234 | Metadata *getRawFile() const { return getOperand(I: 3); } |
3235 | |
3236 | static bool classof(const Metadata *MD) { |
3237 | return MD->getMetadataID() == DICommonBlockKind; |
3238 | } |
3239 | }; |
3240 | |
3241 | /// Local variable. |
3242 | /// |
3243 | /// TODO: Split up flags. |
3244 | class DILocalVariable : public DIVariable { |
3245 | friend class LLVMContextImpl; |
3246 | friend class MDNode; |
3247 | |
3248 | unsigned Arg : 16; |
3249 | DIFlags Flags; |
3250 | |
3251 | DILocalVariable(LLVMContext &C, StorageType Storage, unsigned Line, |
3252 | unsigned Arg, DIFlags Flags, uint32_t AlignInBits, |
3253 | ArrayRef<Metadata *> Ops) |
3254 | : DIVariable(C, DILocalVariableKind, Storage, Line, Ops, AlignInBits), |
3255 | Arg(Arg), Flags(Flags) { |
3256 | assert(Arg < (1 << 16) && "DILocalVariable: Arg out of range" ); |
3257 | } |
3258 | ~DILocalVariable() = default; |
3259 | |
3260 | static DILocalVariable *getImpl(LLVMContext &Context, DIScope *Scope, |
3261 | StringRef Name, DIFile *File, unsigned Line, |
3262 | DIType *Type, unsigned Arg, DIFlags Flags, |
3263 | uint32_t AlignInBits, DINodeArray Annotations, |
3264 | StorageType Storage, |
3265 | bool ShouldCreate = true) { |
3266 | return getImpl(Context, Scope, Name: getCanonicalMDString(Context, S: Name), File, |
3267 | Line, Type, Arg, Flags, AlignInBits, Annotations: Annotations.get(), |
3268 | Storage, ShouldCreate); |
3269 | } |
3270 | static DILocalVariable *getImpl(LLVMContext &Context, Metadata *Scope, |
3271 | MDString *Name, Metadata *File, unsigned Line, |
3272 | Metadata *Type, unsigned Arg, DIFlags Flags, |
3273 | uint32_t AlignInBits, Metadata *Annotations, |
3274 | StorageType Storage, |
3275 | bool ShouldCreate = true); |
3276 | |
3277 | TempDILocalVariable cloneImpl() const { |
3278 | return getTemporary(Context&: getContext(), Scope: getScope(), Name: getName(), File: getFile(), |
3279 | Line: getLine(), Type: getType(), Arg: getArg(), Flags: getFlags(), |
3280 | AlignInBits: getAlignInBits(), Annotations: getAnnotations()); |
3281 | } |
3282 | |
3283 | public: |
3284 | DEFINE_MDNODE_GET(DILocalVariable, |
3285 | (DILocalScope * Scope, StringRef Name, DIFile *File, |
3286 | unsigned Line, DIType *Type, unsigned Arg, DIFlags Flags, |
3287 | uint32_t AlignInBits, DINodeArray Annotations), |
3288 | (Scope, Name, File, Line, Type, Arg, Flags, AlignInBits, |
3289 | Annotations)) |
3290 | DEFINE_MDNODE_GET(DILocalVariable, |
3291 | (Metadata * Scope, MDString *Name, Metadata *File, |
3292 | unsigned Line, Metadata *Type, unsigned Arg, DIFlags Flags, |
3293 | uint32_t AlignInBits, Metadata *Annotations), |
3294 | (Scope, Name, File, Line, Type, Arg, Flags, AlignInBits, |
3295 | Annotations)) |
3296 | |
3297 | TempDILocalVariable clone() const { return cloneImpl(); } |
3298 | |
3299 | /// Get the local scope for this variable. |
3300 | /// |
3301 | /// Variables must be defined in a local scope. |
3302 | DILocalScope *getScope() const { |
3303 | return cast<DILocalScope>(Val: DIVariable::getScope()); |
3304 | } |
3305 | |
3306 | bool isParameter() const { return Arg; } |
3307 | unsigned getArg() const { return Arg; } |
3308 | DIFlags getFlags() const { return Flags; } |
3309 | |
3310 | DINodeArray getAnnotations() const { |
3311 | return cast_or_null<MDTuple>(Val: getRawAnnotations()); |
3312 | } |
3313 | Metadata *getRawAnnotations() const { return getOperand(I: 4); } |
3314 | |
3315 | bool isArtificial() const { return getFlags() & FlagArtificial; } |
3316 | bool isObjectPointer() const { return getFlags() & FlagObjectPointer; } |
3317 | |
3318 | /// Check that a location is valid for this variable. |
3319 | /// |
3320 | /// Check that \c DL exists, is in the same subprogram, and has the same |
3321 | /// inlined-at location as \c this. (Otherwise, it's not a valid attachment |
3322 | /// to a \a DbgInfoIntrinsic.) |
3323 | bool isValidLocationForIntrinsic(const DILocation *DL) const { |
3324 | return DL && getScope()->getSubprogram() == DL->getScope()->getSubprogram(); |
3325 | } |
3326 | |
3327 | static bool classof(const Metadata *MD) { |
3328 | return MD->getMetadataID() == DILocalVariableKind; |
3329 | } |
3330 | }; |
3331 | |
3332 | /// Label. |
3333 | /// |
3334 | /// Uses the SubclassData32 Metadata slot. |
3335 | class DILabel : public DINode { |
3336 | friend class LLVMContextImpl; |
3337 | friend class MDNode; |
3338 | |
3339 | DILabel(LLVMContext &C, StorageType Storage, unsigned Line, |
3340 | ArrayRef<Metadata *> Ops); |
3341 | ~DILabel() = default; |
3342 | |
3343 | static DILabel *getImpl(LLVMContext &Context, DIScope *Scope, StringRef Name, |
3344 | DIFile *File, unsigned Line, StorageType Storage, |
3345 | bool ShouldCreate = true) { |
3346 | return getImpl(Context, Scope, Name: getCanonicalMDString(Context, S: Name), File, |
3347 | Line, Storage, ShouldCreate); |
3348 | } |
3349 | static DILabel *getImpl(LLVMContext &Context, Metadata *Scope, MDString *Name, |
3350 | Metadata *File, unsigned Line, StorageType Storage, |
3351 | bool ShouldCreate = true); |
3352 | |
3353 | TempDILabel cloneImpl() const { |
3354 | return getTemporary(Context&: getContext(), Scope: getScope(), Name: getName(), File: getFile(), |
3355 | Line: getLine()); |
3356 | } |
3357 | |
3358 | public: |
3359 | DEFINE_MDNODE_GET(DILabel, |
3360 | (DILocalScope * Scope, StringRef Name, DIFile *File, |
3361 | unsigned Line), |
3362 | (Scope, Name, File, Line)) |
3363 | DEFINE_MDNODE_GET(DILabel, |
3364 | (Metadata * Scope, MDString *Name, Metadata *File, |
3365 | unsigned Line), |
3366 | (Scope, Name, File, Line)) |
3367 | |
3368 | TempDILabel clone() const { return cloneImpl(); } |
3369 | |
3370 | /// Get the local scope for this label. |
3371 | /// |
3372 | /// Labels must be defined in a local scope. |
3373 | DILocalScope *getScope() const { |
3374 | return cast_or_null<DILocalScope>(Val: getRawScope()); |
3375 | } |
3376 | unsigned getLine() const { return SubclassData32; } |
3377 | StringRef getName() const { return getStringOperand(I: 1); } |
3378 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
3379 | |
3380 | Metadata *getRawScope() const { return getOperand(I: 0); } |
3381 | MDString *getRawName() const { return getOperandAs<MDString>(I: 1); } |
3382 | Metadata *getRawFile() const { return getOperand(I: 2); } |
3383 | |
3384 | /// Check that a location is valid for this label. |
3385 | /// |
3386 | /// Check that \c DL exists, is in the same subprogram, and has the same |
3387 | /// inlined-at location as \c this. (Otherwise, it's not a valid attachment |
3388 | /// to a \a DbgInfoIntrinsic.) |
3389 | bool isValidLocationForIntrinsic(const DILocation *DL) const { |
3390 | return DL && getScope()->getSubprogram() == DL->getScope()->getSubprogram(); |
3391 | } |
3392 | |
3393 | static bool classof(const Metadata *MD) { |
3394 | return MD->getMetadataID() == DILabelKind; |
3395 | } |
3396 | }; |
3397 | |
3398 | class DIObjCProperty : public DINode { |
3399 | friend class LLVMContextImpl; |
3400 | friend class MDNode; |
3401 | |
3402 | unsigned Line; |
3403 | unsigned Attributes; |
3404 | |
3405 | DIObjCProperty(LLVMContext &C, StorageType Storage, unsigned Line, |
3406 | unsigned Attributes, ArrayRef<Metadata *> Ops); |
3407 | ~DIObjCProperty() = default; |
3408 | |
3409 | static DIObjCProperty * |
3410 | getImpl(LLVMContext &Context, StringRef Name, DIFile *File, unsigned Line, |
3411 | StringRef GetterName, StringRef SetterName, unsigned Attributes, |
3412 | DIType *Type, StorageType Storage, bool ShouldCreate = true) { |
3413 | return getImpl(Context, Name: getCanonicalMDString(Context, S: Name), File, Line, |
3414 | GetterName: getCanonicalMDString(Context, S: GetterName), |
3415 | SetterName: getCanonicalMDString(Context, S: SetterName), Attributes, Type, |
3416 | Storage, ShouldCreate); |
3417 | } |
3418 | static DIObjCProperty *getImpl(LLVMContext &Context, MDString *Name, |
3419 | Metadata *File, unsigned Line, |
3420 | MDString *GetterName, MDString *SetterName, |
3421 | unsigned Attributes, Metadata *Type, |
3422 | StorageType Storage, bool ShouldCreate = true); |
3423 | |
3424 | TempDIObjCProperty cloneImpl() const { |
3425 | return getTemporary(Context&: getContext(), Name: getName(), File: getFile(), Line: getLine(), |
3426 | GetterName: getGetterName(), SetterName: getSetterName(), Attributes: getAttributes(), |
3427 | Type: getType()); |
3428 | } |
3429 | |
3430 | public: |
3431 | DEFINE_MDNODE_GET(DIObjCProperty, |
3432 | (StringRef Name, DIFile *File, unsigned Line, |
3433 | StringRef GetterName, StringRef SetterName, |
3434 | unsigned Attributes, DIType *Type), |
3435 | (Name, File, Line, GetterName, SetterName, Attributes, |
3436 | Type)) |
3437 | DEFINE_MDNODE_GET(DIObjCProperty, |
3438 | (MDString * Name, Metadata *File, unsigned Line, |
3439 | MDString *GetterName, MDString *SetterName, |
3440 | unsigned Attributes, Metadata *Type), |
3441 | (Name, File, Line, GetterName, SetterName, Attributes, |
3442 | Type)) |
3443 | |
3444 | TempDIObjCProperty clone() const { return cloneImpl(); } |
3445 | |
3446 | unsigned getLine() const { return Line; } |
3447 | unsigned getAttributes() const { return Attributes; } |
3448 | StringRef getName() const { return getStringOperand(I: 0); } |
3449 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
3450 | StringRef getGetterName() const { return getStringOperand(I: 2); } |
3451 | StringRef getSetterName() const { return getStringOperand(I: 3); } |
3452 | DIType *getType() const { return cast_or_null<DIType>(Val: getRawType()); } |
3453 | |
3454 | StringRef getFilename() const { |
3455 | if (auto *F = getFile()) |
3456 | return F->getFilename(); |
3457 | return "" ; |
3458 | } |
3459 | |
3460 | StringRef getDirectory() const { |
3461 | if (auto *F = getFile()) |
3462 | return F->getDirectory(); |
3463 | return "" ; |
3464 | } |
3465 | |
3466 | MDString *getRawName() const { return getOperandAs<MDString>(I: 0); } |
3467 | Metadata *getRawFile() const { return getOperand(I: 1); } |
3468 | MDString *getRawGetterName() const { return getOperandAs<MDString>(I: 2); } |
3469 | MDString *getRawSetterName() const { return getOperandAs<MDString>(I: 3); } |
3470 | Metadata *getRawType() const { return getOperand(I: 4); } |
3471 | |
3472 | static bool classof(const Metadata *MD) { |
3473 | return MD->getMetadataID() == DIObjCPropertyKind; |
3474 | } |
3475 | }; |
3476 | |
3477 | /// An imported module (C++ using directive or similar). |
3478 | /// |
3479 | /// Uses the SubclassData32 Metadata slot. |
3480 | class DIImportedEntity : public DINode { |
3481 | friend class LLVMContextImpl; |
3482 | friend class MDNode; |
3483 | |
3484 | DIImportedEntity(LLVMContext &C, StorageType Storage, unsigned Tag, |
3485 | unsigned Line, ArrayRef<Metadata *> Ops) |
3486 | : DINode(C, DIImportedEntityKind, Storage, Tag, Ops) { |
3487 | SubclassData32 = Line; |
3488 | } |
3489 | ~DIImportedEntity() = default; |
3490 | |
3491 | static DIImportedEntity *getImpl(LLVMContext &Context, unsigned Tag, |
3492 | DIScope *Scope, DINode *Entity, DIFile *File, |
3493 | unsigned Line, StringRef Name, |
3494 | DINodeArray Elements, StorageType Storage, |
3495 | bool ShouldCreate = true) { |
3496 | return getImpl(Context, Tag, Scope, Entity, File, Line, |
3497 | Name: getCanonicalMDString(Context, S: Name), Elements: Elements.get(), Storage, |
3498 | ShouldCreate); |
3499 | } |
3500 | static DIImportedEntity * |
3501 | getImpl(LLVMContext &Context, unsigned Tag, Metadata *Scope, Metadata *Entity, |
3502 | Metadata *File, unsigned Line, MDString *Name, Metadata *Elements, |
3503 | StorageType Storage, bool ShouldCreate = true); |
3504 | |
3505 | TempDIImportedEntity cloneImpl() const { |
3506 | return getTemporary(Context&: getContext(), Tag: getTag(), Scope: getScope(), Entity: getEntity(), |
3507 | File: getFile(), Line: getLine(), Name: getName(), Elements: getElements()); |
3508 | } |
3509 | |
3510 | public: |
3511 | DEFINE_MDNODE_GET(DIImportedEntity, |
3512 | (unsigned Tag, DIScope *Scope, DINode *Entity, DIFile *File, |
3513 | unsigned Line, StringRef Name = "" , |
3514 | DINodeArray Elements = nullptr), |
3515 | (Tag, Scope, Entity, File, Line, Name, Elements)) |
3516 | DEFINE_MDNODE_GET(DIImportedEntity, |
3517 | (unsigned Tag, Metadata *Scope, Metadata *Entity, |
3518 | Metadata *File, unsigned Line, MDString *Name, |
3519 | Metadata *Elements = nullptr), |
3520 | (Tag, Scope, Entity, File, Line, Name, Elements)) |
3521 | |
3522 | TempDIImportedEntity clone() const { return cloneImpl(); } |
3523 | |
3524 | unsigned getLine() const { return SubclassData32; } |
3525 | DIScope *getScope() const { return cast_or_null<DIScope>(Val: getRawScope()); } |
3526 | DINode *getEntity() const { return cast_or_null<DINode>(Val: getRawEntity()); } |
3527 | StringRef getName() const { return getStringOperand(I: 2); } |
3528 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
3529 | DINodeArray getElements() const { |
3530 | return cast_or_null<MDTuple>(Val: getRawElements()); |
3531 | } |
3532 | |
3533 | Metadata *getRawScope() const { return getOperand(I: 0); } |
3534 | Metadata *getRawEntity() const { return getOperand(I: 1); } |
3535 | MDString *getRawName() const { return getOperandAs<MDString>(I: 2); } |
3536 | Metadata *getRawFile() const { return getOperand(I: 3); } |
3537 | Metadata *getRawElements() const { return getOperand(I: 4); } |
3538 | |
3539 | static bool classof(const Metadata *MD) { |
3540 | return MD->getMetadataID() == DIImportedEntityKind; |
3541 | } |
3542 | }; |
3543 | |
3544 | /// A pair of DIGlobalVariable and DIExpression. |
3545 | class DIGlobalVariableExpression : public MDNode { |
3546 | friend class LLVMContextImpl; |
3547 | friend class MDNode; |
3548 | |
3549 | DIGlobalVariableExpression(LLVMContext &C, StorageType Storage, |
3550 | ArrayRef<Metadata *> Ops) |
3551 | : MDNode(C, DIGlobalVariableExpressionKind, Storage, Ops) {} |
3552 | ~DIGlobalVariableExpression() = default; |
3553 | |
3554 | static DIGlobalVariableExpression * |
3555 | getImpl(LLVMContext &Context, Metadata *Variable, Metadata *Expression, |
3556 | StorageType Storage, bool ShouldCreate = true); |
3557 | |
3558 | TempDIGlobalVariableExpression cloneImpl() const { |
3559 | return getTemporary(Context&: getContext(), Variable: getVariable(), Expression: getExpression()); |
3560 | } |
3561 | |
3562 | public: |
3563 | DEFINE_MDNODE_GET(DIGlobalVariableExpression, |
3564 | (Metadata * Variable, Metadata *Expression), |
3565 | (Variable, Expression)) |
3566 | |
3567 | TempDIGlobalVariableExpression clone() const { return cloneImpl(); } |
3568 | |
3569 | Metadata *getRawVariable() const { return getOperand(I: 0); } |
3570 | |
3571 | DIGlobalVariable *getVariable() const { |
3572 | return cast_or_null<DIGlobalVariable>(Val: getRawVariable()); |
3573 | } |
3574 | |
3575 | Metadata *getRawExpression() const { return getOperand(I: 1); } |
3576 | |
3577 | DIExpression *getExpression() const { |
3578 | return cast<DIExpression>(Val: getRawExpression()); |
3579 | } |
3580 | |
3581 | static bool classof(const Metadata *MD) { |
3582 | return MD->getMetadataID() == DIGlobalVariableExpressionKind; |
3583 | } |
3584 | }; |
3585 | |
3586 | /// Macro Info DWARF-like metadata node. |
3587 | /// |
3588 | /// A metadata node with a DWARF macro info (i.e., a constant named |
3589 | /// \c DW_MACINFO_*, defined in llvm/BinaryFormat/Dwarf.h). Called \a |
3590 | /// DIMacroNode |
3591 | /// because it's potentially used for non-DWARF output. |
3592 | /// |
3593 | /// Uses the SubclassData16 Metadata slot. |
3594 | class DIMacroNode : public MDNode { |
3595 | friend class LLVMContextImpl; |
3596 | friend class MDNode; |
3597 | |
3598 | protected: |
3599 | DIMacroNode(LLVMContext &C, unsigned ID, StorageType Storage, unsigned MIType, |
3600 | ArrayRef<Metadata *> Ops1, |
3601 | ArrayRef<Metadata *> Ops2 = std::nullopt) |
3602 | : MDNode(C, ID, Storage, Ops1, Ops2) { |
3603 | assert(MIType < 1u << 16); |
3604 | SubclassData16 = MIType; |
3605 | } |
3606 | ~DIMacroNode() = default; |
3607 | |
3608 | template <class Ty> Ty *getOperandAs(unsigned I) const { |
3609 | return cast_or_null<Ty>(getOperand(I)); |
3610 | } |
3611 | |
3612 | StringRef getStringOperand(unsigned I) const { |
3613 | if (auto *S = getOperandAs<MDString>(I)) |
3614 | return S->getString(); |
3615 | return StringRef(); |
3616 | } |
3617 | |
3618 | static MDString *getCanonicalMDString(LLVMContext &Context, StringRef S) { |
3619 | if (S.empty()) |
3620 | return nullptr; |
3621 | return MDString::get(Context, Str: S); |
3622 | } |
3623 | |
3624 | public: |
3625 | unsigned getMacinfoType() const { return SubclassData16; } |
3626 | |
3627 | static bool classof(const Metadata *MD) { |
3628 | switch (MD->getMetadataID()) { |
3629 | default: |
3630 | return false; |
3631 | case DIMacroKind: |
3632 | case DIMacroFileKind: |
3633 | return true; |
3634 | } |
3635 | } |
3636 | }; |
3637 | |
3638 | /// Macro |
3639 | /// |
3640 | /// Uses the SubclassData32 Metadata slot. |
3641 | class DIMacro : public DIMacroNode { |
3642 | friend class LLVMContextImpl; |
3643 | friend class MDNode; |
3644 | |
3645 | DIMacro(LLVMContext &C, StorageType Storage, unsigned MIType, unsigned Line, |
3646 | ArrayRef<Metadata *> Ops) |
3647 | : DIMacroNode(C, DIMacroKind, Storage, MIType, Ops) { |
3648 | SubclassData32 = Line; |
3649 | } |
3650 | ~DIMacro() = default; |
3651 | |
3652 | static DIMacro *getImpl(LLVMContext &Context, unsigned MIType, unsigned Line, |
3653 | StringRef Name, StringRef Value, StorageType Storage, |
3654 | bool ShouldCreate = true) { |
3655 | return getImpl(Context, MIType, Line, Name: getCanonicalMDString(Context, S: Name), |
3656 | Value: getCanonicalMDString(Context, S: Value), Storage, ShouldCreate); |
3657 | } |
3658 | static DIMacro *getImpl(LLVMContext &Context, unsigned MIType, unsigned Line, |
3659 | MDString *Name, MDString *Value, StorageType Storage, |
3660 | bool ShouldCreate = true); |
3661 | |
3662 | TempDIMacro cloneImpl() const { |
3663 | return getTemporary(Context&: getContext(), MIType: getMacinfoType(), Line: getLine(), Name: getName(), |
3664 | Value: getValue()); |
3665 | } |
3666 | |
3667 | public: |
3668 | DEFINE_MDNODE_GET(DIMacro, |
3669 | (unsigned MIType, unsigned Line, StringRef Name, |
3670 | StringRef Value = "" ), |
3671 | (MIType, Line, Name, Value)) |
3672 | DEFINE_MDNODE_GET(DIMacro, |
3673 | (unsigned MIType, unsigned Line, MDString *Name, |
3674 | MDString *Value), |
3675 | (MIType, Line, Name, Value)) |
3676 | |
3677 | TempDIMacro clone() const { return cloneImpl(); } |
3678 | |
3679 | unsigned getLine() const { return SubclassData32; } |
3680 | |
3681 | StringRef getName() const { return getStringOperand(I: 0); } |
3682 | StringRef getValue() const { return getStringOperand(I: 1); } |
3683 | |
3684 | MDString *getRawName() const { return getOperandAs<MDString>(I: 0); } |
3685 | MDString *getRawValue() const { return getOperandAs<MDString>(I: 1); } |
3686 | |
3687 | static bool classof(const Metadata *MD) { |
3688 | return MD->getMetadataID() == DIMacroKind; |
3689 | } |
3690 | }; |
3691 | |
3692 | /// Macro file |
3693 | /// |
3694 | /// Uses the SubclassData32 Metadata slot. |
3695 | class DIMacroFile : public DIMacroNode { |
3696 | friend class LLVMContextImpl; |
3697 | friend class MDNode; |
3698 | |
3699 | DIMacroFile(LLVMContext &C, StorageType Storage, unsigned MIType, |
3700 | unsigned Line, ArrayRef<Metadata *> Ops) |
3701 | : DIMacroNode(C, DIMacroFileKind, Storage, MIType, Ops) { |
3702 | SubclassData32 = Line; |
3703 | } |
3704 | ~DIMacroFile() = default; |
3705 | |
3706 | static DIMacroFile *getImpl(LLVMContext &Context, unsigned MIType, |
3707 | unsigned Line, DIFile *File, |
3708 | DIMacroNodeArray Elements, StorageType Storage, |
3709 | bool ShouldCreate = true) { |
3710 | return getImpl(Context, MIType, Line, File: static_cast<Metadata *>(File), |
3711 | Elements: Elements.get(), Storage, ShouldCreate); |
3712 | } |
3713 | |
3714 | static DIMacroFile *getImpl(LLVMContext &Context, unsigned MIType, |
3715 | unsigned Line, Metadata *File, Metadata *Elements, |
3716 | StorageType Storage, bool ShouldCreate = true); |
3717 | |
3718 | TempDIMacroFile cloneImpl() const { |
3719 | return getTemporary(Context&: getContext(), MIType: getMacinfoType(), Line: getLine(), File: getFile(), |
3720 | Elements: getElements()); |
3721 | } |
3722 | |
3723 | public: |
3724 | DEFINE_MDNODE_GET(DIMacroFile, |
3725 | (unsigned MIType, unsigned Line, DIFile *File, |
3726 | DIMacroNodeArray Elements), |
3727 | (MIType, Line, File, Elements)) |
3728 | DEFINE_MDNODE_GET(DIMacroFile, |
3729 | (unsigned MIType, unsigned Line, Metadata *File, |
3730 | Metadata *Elements), |
3731 | (MIType, Line, File, Elements)) |
3732 | |
3733 | TempDIMacroFile clone() const { return cloneImpl(); } |
3734 | |
3735 | void replaceElements(DIMacroNodeArray Elements) { |
3736 | #ifndef NDEBUG |
3737 | for (DIMacroNode *Op : getElements()) |
3738 | assert(is_contained(Elements->operands(), Op) && |
3739 | "Lost a macro node during macro node list replacement" ); |
3740 | #endif |
3741 | replaceOperandWith(I: 1, New: Elements.get()); |
3742 | } |
3743 | |
3744 | unsigned getLine() const { return SubclassData32; } |
3745 | DIFile *getFile() const { return cast_or_null<DIFile>(Val: getRawFile()); } |
3746 | |
3747 | DIMacroNodeArray getElements() const { |
3748 | return cast_or_null<MDTuple>(Val: getRawElements()); |
3749 | } |
3750 | |
3751 | Metadata *getRawFile() const { return getOperand(I: 0); } |
3752 | Metadata *getRawElements() const { return getOperand(I: 1); } |
3753 | |
3754 | static bool classof(const Metadata *MD) { |
3755 | return MD->getMetadataID() == DIMacroFileKind; |
3756 | } |
3757 | }; |
3758 | |
3759 | /// List of ValueAsMetadata, to be used as an argument to a dbg.value |
3760 | /// intrinsic. |
3761 | class DIArgList : public Metadata, ReplaceableMetadataImpl { |
3762 | friend class ReplaceableMetadataImpl; |
3763 | friend class LLVMContextImpl; |
3764 | using iterator = SmallVectorImpl<ValueAsMetadata *>::iterator; |
3765 | |
3766 | SmallVector<ValueAsMetadata *, 4> Args; |
3767 | |
3768 | DIArgList(LLVMContext &Context, ArrayRef<ValueAsMetadata *> Args) |
3769 | : Metadata(DIArgListKind, Uniqued), ReplaceableMetadataImpl(Context), |
3770 | Args(Args.begin(), Args.end()) { |
3771 | track(); |
3772 | } |
3773 | ~DIArgList() { untrack(); } |
3774 | |
3775 | void track(); |
3776 | void untrack(); |
3777 | void dropAllReferences(bool Untrack); |
3778 | |
3779 | public: |
3780 | static DIArgList *get(LLVMContext &Context, ArrayRef<ValueAsMetadata *> Args); |
3781 | |
3782 | ArrayRef<ValueAsMetadata *> getArgs() const { return Args; } |
3783 | |
3784 | iterator args_begin() { return Args.begin(); } |
3785 | iterator args_end() { return Args.end(); } |
3786 | |
3787 | static bool classof(const Metadata *MD) { |
3788 | return MD->getMetadataID() == DIArgListKind; |
3789 | } |
3790 | |
3791 | SmallVector<DPValue *> getAllDPValueUsers() { |
3792 | return ReplaceableMetadataImpl::getAllDPValueUsers(); |
3793 | } |
3794 | |
3795 | void handleChangedOperand(void *Ref, Metadata *New); |
3796 | }; |
3797 | |
3798 | /// Identifies a unique instance of a variable. |
3799 | /// |
3800 | /// Storage for identifying a potentially inlined instance of a variable, |
3801 | /// or a fragment thereof. This guarantees that exactly one variable instance |
3802 | /// may be identified by this class, even when that variable is a fragment of |
3803 | /// an aggregate variable and/or there is another inlined instance of the same |
3804 | /// source code variable nearby. |
3805 | /// This class does not necessarily uniquely identify that variable: it is |
3806 | /// possible that a DebugVariable with different parameters may point to the |
3807 | /// same variable instance, but not that one DebugVariable points to multiple |
3808 | /// variable instances. |
3809 | class DebugVariable { |
3810 | using FragmentInfo = DIExpression::FragmentInfo; |
3811 | |
3812 | const DILocalVariable *Variable; |
3813 | std::optional<FragmentInfo> Fragment; |
3814 | const DILocation *InlinedAt; |
3815 | |
3816 | /// Fragment that will overlap all other fragments. Used as default when |
3817 | /// caller demands a fragment. |
3818 | static const FragmentInfo DefaultFragment; |
3819 | |
3820 | public: |
3821 | DebugVariable(const DbgVariableIntrinsic *DII); |
3822 | DebugVariable(const DPValue *DPV); |
3823 | |
3824 | DebugVariable(const DILocalVariable *Var, |
3825 | std::optional<FragmentInfo> FragmentInfo, |
3826 | const DILocation *InlinedAt) |
3827 | : Variable(Var), Fragment(FragmentInfo), InlinedAt(InlinedAt) {} |
3828 | |
3829 | DebugVariable(const DILocalVariable *Var, const DIExpression *DIExpr, |
3830 | const DILocation *InlinedAt) |
3831 | : Variable(Var), |
3832 | Fragment(DIExpr ? DIExpr->getFragmentInfo() : std::nullopt), |
3833 | InlinedAt(InlinedAt) {} |
3834 | |
3835 | const DILocalVariable *getVariable() const { return Variable; } |
3836 | std::optional<FragmentInfo> getFragment() const { return Fragment; } |
3837 | const DILocation *getInlinedAt() const { return InlinedAt; } |
3838 | |
3839 | FragmentInfo getFragmentOrDefault() const { |
3840 | return Fragment.value_or(u: DefaultFragment); |
3841 | } |
3842 | |
3843 | static bool isDefaultFragment(const FragmentInfo F) { |
3844 | return F == DefaultFragment; |
3845 | } |
3846 | |
3847 | bool operator==(const DebugVariable &Other) const { |
3848 | return std::tie(args: Variable, args: Fragment, args: InlinedAt) == |
3849 | std::tie(args: Other.Variable, args: Other.Fragment, args: Other.InlinedAt); |
3850 | } |
3851 | |
3852 | bool operator<(const DebugVariable &Other) const { |
3853 | return std::tie(args: Variable, args: Fragment, args: InlinedAt) < |
3854 | std::tie(args: Other.Variable, args: Other.Fragment, args: Other.InlinedAt); |
3855 | } |
3856 | }; |
3857 | |
3858 | template <> struct DenseMapInfo<DebugVariable> { |
3859 | using FragmentInfo = DIExpression::FragmentInfo; |
3860 | |
3861 | /// Empty key: no key should be generated that has no DILocalVariable. |
3862 | static inline DebugVariable getEmptyKey() { |
3863 | return DebugVariable(nullptr, std::nullopt, nullptr); |
3864 | } |
3865 | |
3866 | /// Difference in tombstone is that the Optional is meaningful. |
3867 | static inline DebugVariable getTombstoneKey() { |
3868 | return DebugVariable(nullptr, {{0, 0}}, nullptr); |
3869 | } |
3870 | |
3871 | static unsigned getHashValue(const DebugVariable &D) { |
3872 | unsigned HV = 0; |
3873 | const std::optional<FragmentInfo> Fragment = D.getFragment(); |
3874 | if (Fragment) |
3875 | HV = DenseMapInfo<FragmentInfo>::getHashValue(Frag: *Fragment); |
3876 | |
3877 | return hash_combine(args: D.getVariable(), args: HV, args: D.getInlinedAt()); |
3878 | } |
3879 | |
3880 | static bool isEqual(const DebugVariable &A, const DebugVariable &B) { |
3881 | return A == B; |
3882 | } |
3883 | }; |
3884 | |
3885 | /// Identifies a unique instance of a whole variable (discards/ignores fragment |
3886 | /// information). |
3887 | class DebugVariableAggregate : public DebugVariable { |
3888 | public: |
3889 | DebugVariableAggregate(const DbgVariableIntrinsic *DVI); |
3890 | DebugVariableAggregate(const DebugVariable &V) |
3891 | : DebugVariable(V.getVariable(), std::nullopt, V.getInlinedAt()) {} |
3892 | }; |
3893 | |
3894 | template <> |
3895 | struct DenseMapInfo<DebugVariableAggregate> |
3896 | : public DenseMapInfo<DebugVariable> {}; |
3897 | } // end namespace llvm |
3898 | |
3899 | #undef DEFINE_MDNODE_GET_UNPACK_IMPL |
3900 | #undef DEFINE_MDNODE_GET_UNPACK |
3901 | #undef DEFINE_MDNODE_GET |
3902 | |
3903 | #endif // LLVM_IR_DEBUGINFOMETADATA_H |
3904 | |