1 /*===-- InstrProfData.inc - instr profiling runtime structures -*- C++ -*-=== *\
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
7 \*===----------------------------------------------------------------------===*/
9 * This is the main file that defines all the data structure, signature,
10 * constant literals that are shared across profiling runtime library,
11 * compiler (instrumentation), and host tools (reader/writer). The entities
12 * defined in this file affect the profile runtime ABI, the raw profile format,
15 * The file has two identical copies. The primary copy lives in LLVM and
16 * the other one sits in compiler-rt/lib/profile directory. To make changes
17 * in this file, first modify the primary copy and copy it over to compiler-rt.
18 * Testing of any change in this file can start only after the two copies are
21 * The first part of the file includes macros that defines types, names, and
22 * initializers for the member fields of the core data structures. The field
23 * declarations for one structure is enabled by defining the field activation
24 * macro associated with that structure. Only one field activation record
25 * can be defined at one time and the rest definitions will be filtered out by
28 * Examples of how the template is used to instantiate structure definition:
29 * 1. To declare a structure:
32 * #define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer) \
34 * #include "llvm/ProfileData/InstrProfData.inc"
37 * 2. To construct LLVM type arrays for the struct type:
39 * Type *DataTypes[] = {
40 * #define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer) \
42 * #include "llvm/ProfileData/InstrProfData.inc"
45 * 4. To construct constant array for the initializers:
46 * #define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer) \
48 * Constant *ConstantVals[] = {
49 * #include "llvm/ProfileData/InstrProfData.inc"
53 * The second part of the file includes definitions all other entities that
54 * are related to runtime ABI and format. When no field activation macro is
55 * defined, this file can be included to introduce the definitions.
57 \*===----------------------------------------------------------------------===*/
59 /* Functions marked with INSTR_PROF_VISIBILITY must have hidden visibility in
60 * the compiler runtime. */
61 #ifndef INSTR_PROF_VISIBILITY
62 #define INSTR_PROF_VISIBILITY
65 // clang-format off:consider re-enabling clang-format if auto-formatted C macros
66 // are readable (e.g., after `issue #82426` is fixed)
67 /* INSTR_PROF_DATA start. */
68 /* Definition of member fields of the per-function control structure. */
69 #ifndef INSTR_PROF_DATA
70 #define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer)
72 #define INSTR_PROF_DATA_DEFINED
74 INSTR_PROF_DATA(const uint64_t, llvm::Type::getInt64Ty(Ctx), NameRef, \
75 ConstantInt::get(llvm::Type::getInt64Ty(Ctx), \
76 IndexedInstrProf::ComputeHash(getPGOFuncNameVarInitializer(Inc->getName()))))
77 INSTR_PROF_DATA(const uint64_t, llvm::Type::getInt64Ty(Ctx), FuncHash, \
78 ConstantInt::get(llvm::Type::getInt64Ty(Ctx), \
79 Inc->getHash()->getZExtValue()))
80 INSTR_PROF_DATA(const IntPtrT, IntPtrTy, CounterPtr, RelativeCounterPtr)
81 INSTR_PROF_DATA(const IntPtrT, IntPtrTy, BitmapPtr, RelativeBitmapPtr)
82 /* This is used to map function pointers for the indirect call targets to
83 * function name hashes during the conversion from raw to merged profile
86 INSTR_PROF_DATA(const IntPtrT, llvm::PointerType::getUnqual(Ctx), FunctionPointer, \
88 INSTR_PROF_DATA(IntPtrT, llvm::PointerType::getUnqual(Ctx), Values, \
90 INSTR_PROF_DATA(const uint32_t, llvm::Type::getInt32Ty(Ctx), NumCounters, \
91 ConstantInt::get(llvm::Type::getInt32Ty(Ctx), NumCounters))
92 INSTR_PROF_DATA(const uint16_t, Int16ArrayTy, NumValueSites[IPVK_Last+1], \
93 ConstantArray::get(Int16ArrayTy, Int16ArrayVals)) \
94 INSTR_PROF_DATA(const uint32_t, llvm::Type::getInt32Ty(Ctx), NumBitmapBytes, \
95 ConstantInt::get(llvm::Type::getInt32Ty(Ctx), NumBitmapBytes))
96 #undef INSTR_PROF_DATA
97 /* INSTR_PROF_DATA end. */
99 /* For a virtual table object, record the name hash to associate profiled
100 * addresses with global variables, and record {starting address, size in bytes}
101 * to map the profiled virtual table (which usually have an offset from the
102 * starting address) back to a virtual table object. */
103 #ifndef INSTR_PROF_VTABLE_DATA
104 #define INSTR_PROF_VTABLE_DATA(Type, LLVMType, Name, Initializer)
106 #define INSTR_PROF_VTABLE_DATA_DEFINED
108 INSTR_PROF_VTABLE_DATA(const uint64_t, llvm::Type::getInt64Ty(Ctx), \
109 VTableNameHash, ConstantInt::get(llvm::Type::getInt64Ty(Ctx), \
110 IndexedInstrProf::ComputeHash(PGOVTableName)))
111 INSTR_PROF_VTABLE_DATA(const IntPtrT, llvm::PointerType::getUnqual(Ctx), \
112 VTablePointer, VTableAddr)
113 INSTR_PROF_VTABLE_DATA(const uint32_t, llvm::Type::getInt32Ty(Ctx), VTableSize, \
114 ConstantInt::get(llvm::Type::getInt32Ty(Ctx), \
116 #undef INSTR_PROF_VTABLE_DATA
117 /* INSTR_PROF_VTABLE_DATA end. */
119 /* This is an internal data structure used by value profiler. It
120 * is defined here to allow serialization code sharing by LLVM
121 * to be used in unit test.
123 * typedef struct ValueProfNode {
124 * // InstrProfValueData VData;
127 * struct ValueProfNode *Next;
130 /* INSTR_PROF_VALUE_NODE start. */
131 #ifndef INSTR_PROF_VALUE_NODE
132 #define INSTR_PROF_VALUE_NODE(Type, LLVMType, Name, Initializer)
134 #define INSTR_PROF_DATA_DEFINED
136 INSTR_PROF_VALUE_NODE(uint64_t, llvm::Type::getInt64Ty(Ctx), Value, \
137 ConstantInt::get(llvm::Type::GetInt64Ty(Ctx), 0))
138 INSTR_PROF_VALUE_NODE(uint64_t, llvm::Type::getInt64Ty(Ctx), Count, \
139 ConstantInt::get(llvm::Type::GetInt64Ty(Ctx), 0))
140 INSTR_PROF_VALUE_NODE(PtrToNodeT, llvm::PointerType::getUnqual(Ctx), Next, \
141 ConstantInt::get(llvm::PointerType::getUnqual(Ctx), 0))
142 #undef INSTR_PROF_VALUE_NODE
143 /* INSTR_PROF_VALUE_NODE end. */
145 /* INSTR_PROF_RAW_HEADER start */
146 /* Definition of member fields of the raw profile header data structure. */
147 /* Please update llvm/docs/InstrProfileFormat.rst as appropriate when updating
148 raw profile format. */
149 #ifndef INSTR_PROF_RAW_HEADER
150 #define INSTR_PROF_RAW_HEADER(Type, Name, Initializer)
152 #define INSTR_PROF_DATA_DEFINED
154 INSTR_PROF_RAW_HEADER(uint64_t, Magic, __llvm_profile_get_magic())
155 INSTR_PROF_RAW_HEADER(uint64_t, Version, __llvm_profile_get_version())
156 INSTR_PROF_RAW_HEADER(uint64_t, BinaryIdsSize, __llvm_write_binary_ids(NULL))
157 INSTR_PROF_RAW_HEADER(uint64_t, NumData, NumData)
158 INSTR_PROF_RAW_HEADER(uint64_t, PaddingBytesBeforeCounters, PaddingBytesBeforeCounters)
159 INSTR_PROF_RAW_HEADER(uint64_t, NumCounters, NumCounters)
160 INSTR_PROF_RAW_HEADER(uint64_t, PaddingBytesAfterCounters, PaddingBytesAfterCounters)
161 INSTR_PROF_RAW_HEADER(uint64_t, NumBitmapBytes, NumBitmapBytes)
162 INSTR_PROF_RAW_HEADER(uint64_t, PaddingBytesAfterBitmapBytes, PaddingBytesAfterBitmapBytes)
163 INSTR_PROF_RAW_HEADER(uint64_t, NamesSize, NamesSize)
164 INSTR_PROF_RAW_HEADER(uint64_t, CountersDelta,
165 (uintptr_t)CountersBegin - (uintptr_t)DataBegin)
166 INSTR_PROF_RAW_HEADER(uint64_t, BitmapDelta,
167 (uintptr_t)BitmapBegin - (uintptr_t)DataBegin)
168 INSTR_PROF_RAW_HEADER(uint64_t, NamesDelta, (uintptr_t)NamesBegin)
169 INSTR_PROF_RAW_HEADER(uint64_t, NumVTables, NumVTables)
170 INSTR_PROF_RAW_HEADER(uint64_t, VNamesSize, VNamesSize)
171 INSTR_PROF_RAW_HEADER(uint64_t, ValueKindLast, IPVK_Last)
172 #undef INSTR_PROF_RAW_HEADER
173 /* INSTR_PROF_RAW_HEADER end */
175 /* VALUE_PROF_FUNC_PARAM start */
176 /* Definition of parameter types of the runtime API used to do value profiling
177 * for a given value site.
179 #ifndef VALUE_PROF_FUNC_PARAM
180 #define VALUE_PROF_FUNC_PARAM(ArgType, ArgName, ArgLLVMType)
181 #define INSTR_PROF_COMMA
183 #define INSTR_PROF_DATA_DEFINED
184 #define INSTR_PROF_COMMA ,
186 VALUE_PROF_FUNC_PARAM(uint64_t, TargetValue, Type::getInt64Ty(Ctx)) \
188 VALUE_PROF_FUNC_PARAM(void *, Data, PointerType::getUnqual(Ctx)) INSTR_PROF_COMMA
189 VALUE_PROF_FUNC_PARAM(uint32_t, CounterIndex, Type::getInt32Ty(Ctx))
190 #undef VALUE_PROF_FUNC_PARAM
191 #undef INSTR_PROF_COMMA
192 /* VALUE_PROF_FUNC_PARAM end */
194 /* VALUE_PROF_KIND start */
195 #ifndef VALUE_PROF_KIND
196 #define VALUE_PROF_KIND(Enumerator, Value, Descr)
198 #define INSTR_PROF_DATA_DEFINED
200 /* For indirect function call value profiling, the addresses of the target
201 * functions are profiled by the instrumented code. The target addresses are
202 * written in the raw profile data and converted to target function name's MD5
203 * hash by the profile reader during deserialization. Typically, this happens
204 * when the raw profile data is read during profile merging.
206 * For this remapping the ProfData is used. ProfData contains both the function
207 * name hash and the function address.
209 VALUE_PROF_KIND(IPVK_IndirectCallTarget, 0, "indirect call target")
210 /* For memory intrinsic functions size profiling. */
211 VALUE_PROF_KIND(IPVK_MemOPSize, 1, "memory intrinsic functions size")
212 /* For virtual table address profiling, the address point of the virtual table
213 * (i.e., the address contained in objects pointing to a virtual table) are
214 * profiled. Note this may not be the address of the per C++ class virtual table
215 * object (e.g., there might be an offset).
217 * The profiled addresses are stored in raw profile, together with the following
218 * two types of information.
219 * 1. The (starting and ending) addresses of per C++ class virtual table objects.
220 * 2. The (compressed) virtual table object names.
221 * RawInstrProfReader converts profiled virtual table addresses to virtual table
224 VALUE_PROF_KIND(IPVK_VTableTarget, 2, "The profiled address point of the vtable")
225 /* These two kinds must be the last to be
226 * declared. This is to make sure the string
227 * array created with the template can be
228 * indexed with the kind value.
230 VALUE_PROF_KIND(IPVK_First, IPVK_IndirectCallTarget, "first")
231 VALUE_PROF_KIND(IPVK_Last, IPVK_VTableTarget, "last")
233 #undef VALUE_PROF_KIND
234 /* VALUE_PROF_KIND end */
236 #undef COVMAP_V2_OR_V3
238 #define COVMAP_V2_OR_V3
241 #define COVMAP_V2_OR_V3
244 /* COVMAP_FUNC_RECORD start */
245 /* Definition of member fields of the function record structure in coverage
248 #ifndef COVMAP_FUNC_RECORD
249 #define COVMAP_FUNC_RECORD(Type, LLVMType, Name, Initializer)
251 #define INSTR_PROF_DATA_DEFINED
254 COVMAP_FUNC_RECORD(const IntPtrT, llvm::PointerType::getUnqual(Ctx), \
255 NamePtr, llvm::ConstantExpr::getBitCast(NamePtr, \
256 llvm::PointerType::getUnqual(Ctx)))
257 COVMAP_FUNC_RECORD(const uint32_t, llvm::Type::getInt32Ty(Ctx), NameSize, \
258 llvm::ConstantInt::get(llvm::Type::getInt32Ty(Ctx), \
261 #ifdef COVMAP_V2_OR_V3
262 COVMAP_FUNC_RECORD(const int64_t, llvm::Type::getInt64Ty(Ctx), NameRef, \
263 llvm::ConstantInt::get( \
264 llvm::Type::getInt64Ty(Ctx), NameHash))
266 COVMAP_FUNC_RECORD(const uint32_t, llvm::Type::getInt32Ty(Ctx), DataSize, \
267 llvm::ConstantInt::get( \
268 llvm::Type::getInt32Ty(Ctx), CoverageMapping.size()))
269 COVMAP_FUNC_RECORD(const uint64_t, llvm::Type::getInt64Ty(Ctx), FuncHash, \
270 llvm::ConstantInt::get( \
271 llvm::Type::getInt64Ty(Ctx), FuncHash))
273 COVMAP_FUNC_RECORD(const uint64_t, llvm::Type::getInt64Ty(Ctx), FilenamesRef, \
274 llvm::ConstantInt::get( \
275 llvm::Type::getInt64Ty(Ctx), FilenamesRef))
276 COVMAP_FUNC_RECORD(const char, \
277 llvm::ArrayType::get(llvm::Type::getInt8Ty(Ctx), \
278 CoverageMapping.size()), \
280 llvm::ConstantDataArray::getRaw( \
281 CoverageMapping, CoverageMapping.size(), \
282 llvm::Type::getInt8Ty(Ctx)))
284 #undef COVMAP_FUNC_RECORD
285 /* COVMAP_FUNC_RECORD end. */
287 /* COVMAP_HEADER start */
288 /* Definition of member fields of coverage map header.
290 #ifndef COVMAP_HEADER
291 #define COVMAP_HEADER(Type, LLVMType, Name, Initializer)
293 #define INSTR_PROF_DATA_DEFINED
295 COVMAP_HEADER(uint32_t, Int32Ty, NRecords, \
296 llvm::ConstantInt::get(Int32Ty, NRecords))
297 COVMAP_HEADER(uint32_t, Int32Ty, FilenamesSize, \
298 llvm::ConstantInt::get(Int32Ty, FilenamesSize))
299 COVMAP_HEADER(uint32_t, Int32Ty, CoverageSize, \
300 llvm::ConstantInt::get(Int32Ty, CoverageMappingSize))
301 COVMAP_HEADER(uint32_t, Int32Ty, Version, \
302 llvm::ConstantInt::get(Int32Ty, CovMapVersion::CurrentVersion))
304 /* COVMAP_HEADER end. */
306 /* COVINIT_FUNC start */
308 #define COVINIT_FUNC(Type, LLVMType, Name, Initializer)
310 #define INSTR_PROF_DATA_DEFINED
312 COVINIT_FUNC(IntPtrT, llvm::PointerType::getUnqual(Ctx), WriteoutFunction, \
314 COVINIT_FUNC(IntPtrT, llvm::PointerType::getUnqual(Ctx), ResetFunction, \
317 /* COVINIT_FUNC end */
319 #ifdef INSTR_PROF_SECT_ENTRY
320 #define INSTR_PROF_DATA_DEFINED
321 INSTR_PROF_SECT_ENTRY(IPSK_data, \
322 INSTR_PROF_QUOTE(INSTR_PROF_DATA_COMMON), \
323 INSTR_PROF_DATA_COFF, "__DATA,")
324 INSTR_PROF_SECT_ENTRY(IPSK_cnts, \
325 INSTR_PROF_QUOTE(INSTR_PROF_CNTS_COMMON), \
326 INSTR_PROF_CNTS_COFF, "__DATA,")
327 INSTR_PROF_SECT_ENTRY(IPSK_bitmap, \
328 INSTR_PROF_QUOTE(INSTR_PROF_BITS_COMMON), \
329 INSTR_PROF_BITS_COFF, "__DATA,")
330 INSTR_PROF_SECT_ENTRY(IPSK_name, \
331 INSTR_PROF_QUOTE(INSTR_PROF_NAME_COMMON), \
332 INSTR_PROF_NAME_COFF, "__DATA,")
333 INSTR_PROF_SECT_ENTRY(IPSK_vname, \
334 INSTR_PROF_QUOTE(INSTR_PROF_VNAME_COMMON), \
335 INSTR_PROF_VNAME_COFF, "__DATA,")
336 INSTR_PROF_SECT_ENTRY(IPSK_vals, \
337 INSTR_PROF_QUOTE(INSTR_PROF_VALS_COMMON), \
338 INSTR_PROF_VALS_COFF, "__DATA,")
339 INSTR_PROF_SECT_ENTRY(IPSK_vnodes, \
340 INSTR_PROF_QUOTE(INSTR_PROF_VNODES_COMMON), \
341 INSTR_PROF_VNODES_COFF, "__DATA,")
342 INSTR_PROF_SECT_ENTRY(IPSK_vtab, \
343 INSTR_PROF_QUOTE(INSTR_PROF_VTAB_COMMON), \
344 INSTR_PROF_VTAB_COFF, "__DATA,")
345 INSTR_PROF_SECT_ENTRY(IPSK_covmap, \
346 INSTR_PROF_QUOTE(INSTR_PROF_COVMAP_COMMON), \
347 INSTR_PROF_COVMAP_COFF, "__LLVM_COV,")
348 INSTR_PROF_SECT_ENTRY(IPSK_covfun, \
349 INSTR_PROF_QUOTE(INSTR_PROF_COVFUN_COMMON), \
350 INSTR_PROF_COVFUN_COFF, "__LLVM_COV,")
351 INSTR_PROF_SECT_ENTRY(IPSK_orderfile, \
352 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_COMMON), \
353 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_COFF), "__DATA,")
354 INSTR_PROF_SECT_ENTRY(IPSK_covdata, \
355 INSTR_PROF_QUOTE(INSTR_PROF_COVDATA_COMMON), \
356 INSTR_PROF_COVDATA_COFF, "__LLVM_COV,")
357 INSTR_PROF_SECT_ENTRY(IPSK_covname, \
358 INSTR_PROF_QUOTE(INSTR_PROF_COVNAME_COMMON), \
359 INSTR_PROF_COVNAME_COFF, "__LLVM_COV,")
360 INSTR_PROF_SECT_ENTRY(IPSK_covinit, \
361 INSTR_PROF_QUOTE(INSTR_PROF_COVINIT_COMMON), \
362 INSTR_PROF_COVINIT_COFF, "__LLVM_COV,")
364 #undef INSTR_PROF_SECT_ENTRY
368 #ifdef INSTR_PROF_VALUE_PROF_DATA
369 #define INSTR_PROF_DATA_DEFINED
371 #define INSTR_PROF_MAX_NUM_VAL_PER_SITE 255
373 * This is the header of the data structure that defines the on-disk
374 * layout of the value profile data of a particular kind for one function.
376 typedef struct ValueProfRecord {
377 /* The kind of the value profile record. */
380 * The number of value profile sites. It is guaranteed to be non-zero;
381 * otherwise the record for this kind won't be emitted.
383 uint32_t NumValueSites;
385 * The first element of the array that stores the number of profiled
386 * values for each value site. The size of the array is NumValueSites.
387 * Since NumValueSites is greater than zero, there is at least one
388 * element in the array.
390 uint8_t SiteCountArray[1];
393 * The fake declaration is for documentation purpose only.
394 * Align the start of next field to be on 8 byte boundaries.
398 /* The array of value profile data. The size of the array is the sum
399 * of all elements in SiteCountArray[].
400 InstrProfValueData ValueData[];
405 * Return the number of value sites.
407 uint32_t getNumValueSites() const { return NumValueSites; }
409 * Read data from this record and save it to Record.
411 void deserializeTo(InstrProfRecord &Record,
412 InstrProfSymtab *SymTab);
414 * In-place byte swap:
415 * Do byte swap for this instance. \c Old is the original order before
416 * the swap, and \c New is the New byte order.
418 void swapBytes(llvm::endianness Old, llvm::endianness New);
423 * Per-function header/control data structure for value profiling
424 * data in indexed format.
426 typedef struct ValueProfData {
428 * Total size in bytes including this field. It must be a multiple
429 * of sizeof(uint64_t).
433 *The number of value profile kinds that has value profile data.
434 * In this implementation, a value profile kind is considered to
435 * have profile data if the number of value profile sites for the
436 * kind is not zero. More aggressively, the implementation can
437 * choose to check the actual data value: if none of the value sites
438 * has any profiled values, the kind can be skipped.
440 uint32_t NumValueKinds;
443 * Following are a sequence of variable length records. The prefix/header
444 * of each record is defined by ValueProfRecord type. The number of
445 * records is NumValueKinds.
446 * ValueProfRecord Record_1;
447 * ValueProfRecord Record_N;
452 * Return the total size in bytes of the on-disk value profile data
453 * given the data stored in Record.
455 static uint32_t getSize(const InstrProfRecord &Record);
457 * Return a pointer to \c ValueProfData instance ready to be streamed.
459 static std::unique_ptr<ValueProfData>
460 serializeFrom(const InstrProfRecord &Record);
462 * Check the integrity of the record.
464 Error checkIntegrity();
466 * Return a pointer to \c ValueProfileData instance ready to be read.
467 * All data in the instance are properly byte swapped. The input
468 * data is assumed to be in little endian order.
470 static Expected<std::unique_ptr<ValueProfData>>
471 getValueProfData(const unsigned char *SrcBuffer,
472 const unsigned char *const SrcBufferEnd,
473 llvm::endianness SrcDataEndianness);
475 * Swap byte order from \c Endianness order to host byte order.
477 void swapBytesToHost(llvm::endianness Endianness);
479 * Swap byte order from host byte order to \c Endianness order.
481 void swapBytesFromHost(llvm::endianness Endianness);
483 * Return the total size of \c ValueProfileData.
485 uint32_t getSize() const { return TotalSize; }
487 * Read data from this data and save it to \c Record.
489 void deserializeTo(InstrProfRecord &Record,
490 InstrProfSymtab *SymTab);
491 void operator delete(void *ptr) { ::operator delete(ptr); }
496 * The closure is designed to abstact away two types of value profile data:
497 * - InstrProfRecord which is the primary data structure used to
498 * represent profile data in host tools (reader, writer, and profile-use)
499 * - value profile runtime data structure suitable to be used by C
502 * Both sources of data need to serialize to disk/memory-buffer in common
503 * format: ValueProfData. The abstraction allows compiler-rt's raw profiler
504 * writer to share the same format and code with indexed profile writer.
506 * For documentation of the member methods below, refer to corresponding methods
507 * in class InstrProfRecord.
509 typedef struct ValueProfRecordClosure {
511 uint32_t (*GetNumValueKinds)(const void *Record);
512 uint32_t (*GetNumValueSites)(const void *Record, uint32_t VKind);
513 uint32_t (*GetNumValueData)(const void *Record, uint32_t VKind);
514 uint32_t (*GetNumValueDataForSite)(const void *R, uint32_t VK, uint32_t S);
517 * After extracting the value profile data from the value profile record,
518 * this method is used to map the in-memory value to on-disk value. If
519 * the method is null, value will be written out untranslated.
521 uint64_t (*RemapValueData)(uint32_t, uint64_t Value);
522 void (*GetValueForSite)(const void *R, InstrProfValueData *Dst, uint32_t K,
524 ValueProfData *(*AllocValueProfData)(size_t TotalSizeInBytes);
525 } ValueProfRecordClosure;
527 INSTR_PROF_VISIBILITY ValueProfRecord *
528 getFirstValueProfRecord(ValueProfData *VPD);
529 INSTR_PROF_VISIBILITY ValueProfRecord *
530 getValueProfRecordNext(ValueProfRecord *VPR);
531 INSTR_PROF_VISIBILITY InstrProfValueData *
532 getValueProfRecordValueData(ValueProfRecord *VPR);
533 INSTR_PROF_VISIBILITY uint32_t
534 getValueProfRecordHeaderSize(uint32_t NumValueSites);
536 #undef INSTR_PROF_VALUE_PROF_DATA
537 #endif /* INSTR_PROF_VALUE_PROF_DATA */
540 #ifdef INSTR_PROF_COMMON_API_IMPL
541 #define INSTR_PROF_DATA_DEFINED
543 #define INSTR_PROF_INLINE inline
544 #define INSTR_PROF_NULLPTR nullptr
546 #define INSTR_PROF_INLINE
547 #define INSTR_PROF_NULLPTR NULL
551 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
557 * Return the \c ValueProfRecord header size including the
560 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE uint32_t
561 getValueProfRecordHeaderSize(uint32_t NumValueSites) {
562 uint32_t Size = offsetof(ValueProfRecord, SiteCountArray) +
563 sizeof(uint8_t) * NumValueSites;
564 /* Round the size to multiple of 8 bytes. */
565 Size = (Size + 7) & ~7;
570 * Return the total size of the value profile record including the
571 * header and the value data.
573 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE uint32_t
574 getValueProfRecordSize(uint32_t NumValueSites, uint32_t NumValueData) {
575 return getValueProfRecordHeaderSize(NumValueSites) +
576 sizeof(InstrProfValueData) * NumValueData;
580 * Return the pointer to the start of value data array.
582 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE InstrProfValueData *
583 getValueProfRecordValueData(ValueProfRecord *This) {
584 return (InstrProfValueData *)((char *)This + getValueProfRecordHeaderSize(
585 This->NumValueSites));
589 * Return the total number of value data for \c This record.
591 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE uint32_t
592 getValueProfRecordNumValueData(ValueProfRecord *This) {
593 uint32_t NumValueData = 0;
595 for (I = 0; I < This->NumValueSites; I++)
596 NumValueData += This->SiteCountArray[I];
601 * Use this method to advance to the next \c This \c ValueProfRecord.
603 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE ValueProfRecord *
604 getValueProfRecordNext(ValueProfRecord *This) {
605 uint32_t NumValueData = getValueProfRecordNumValueData(This);
606 return (ValueProfRecord *)((char *)This +
607 getValueProfRecordSize(This->NumValueSites,
612 * Return the first \c ValueProfRecord instance.
614 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE ValueProfRecord *
615 getFirstValueProfRecord(ValueProfData *This) {
616 return (ValueProfRecord *)((char *)This + sizeof(ValueProfData));
619 /* Closure based interfaces. */
622 * Return the total size in bytes of the on-disk value profile data
623 * given the data stored in Record.
625 INSTR_PROF_VISIBILITY uint32_t
626 getValueProfDataSize(ValueProfRecordClosure *Closure) {
628 uint32_t TotalSize = sizeof(ValueProfData);
629 const void *Record = Closure->Record;
631 for (Kind = IPVK_First; Kind <= IPVK_Last; Kind++) {
632 uint32_t NumValueSites = Closure->GetNumValueSites(Record, Kind);
635 TotalSize += getValueProfRecordSize(NumValueSites,
636 Closure->GetNumValueData(Record, Kind));
642 * Extract value profile data of a function for the profile kind \c ValueKind
643 * from the \c Closure and serialize the data into \c This record instance.
645 INSTR_PROF_VISIBILITY void
646 serializeValueProfRecordFrom(ValueProfRecord *This,
647 ValueProfRecordClosure *Closure,
648 uint32_t ValueKind, uint32_t NumValueSites) {
650 const void *Record = Closure->Record;
651 This->Kind = ValueKind;
652 This->NumValueSites = NumValueSites;
653 InstrProfValueData *DstVD = getValueProfRecordValueData(This);
655 for (S = 0; S < NumValueSites; S++) {
656 uint32_t ND = Closure->GetNumValueDataForSite(Record, ValueKind, S);
657 This->SiteCountArray[S] = ND;
658 Closure->GetValueForSite(Record, DstVD, ValueKind, S);
664 * Extract value profile data of a function from the \c Closure
665 * and serialize the data into \c DstData if it is not NULL or heap
666 * memory allocated by the \c Closure's allocator method. If \c
667 * DstData is not null, the caller is expected to set the TotalSize
670 INSTR_PROF_VISIBILITY ValueProfData *
671 serializeValueProfDataFrom(ValueProfRecordClosure *Closure,
672 ValueProfData *DstData) {
675 DstData ? DstData->TotalSize : getValueProfDataSize(Closure);
678 DstData ? DstData : Closure->AllocValueProfData(TotalSize);
680 VPD->TotalSize = TotalSize;
681 VPD->NumValueKinds = Closure->GetNumValueKinds(Closure->Record);
682 ValueProfRecord *VR = getFirstValueProfRecord(VPD);
683 for (Kind = IPVK_First; Kind <= IPVK_Last; Kind++) {
684 uint32_t NumValueSites = Closure->GetNumValueSites(Closure->Record, Kind);
687 serializeValueProfRecordFrom(VR, Closure, Kind, NumValueSites);
688 VR = getValueProfRecordNext(VR);
693 #undef INSTR_PROF_COMMON_API_IMPL
694 #endif /* INSTR_PROF_COMMON_API_IMPL */
696 /*============================================================================*/
698 // clang-format off:consider re-enabling clang-format if auto-formatted C macros
699 // are readable (e.g., after `issue #82426` is fixed)
700 #ifndef INSTR_PROF_DATA_DEFINED
702 #ifndef INSTR_PROF_DATA_INC
703 #define INSTR_PROF_DATA_INC
706 #define INSTR_PROF_SIMPLE_QUOTE(x) #x
707 #define INSTR_PROF_QUOTE(x) INSTR_PROF_SIMPLE_QUOTE(x)
708 #define INSTR_PROF_SIMPLE_CONCAT(x,y) x ## y
709 #define INSTR_PROF_CONCAT(x,y) INSTR_PROF_SIMPLE_CONCAT(x,y)
711 /* Magic number to detect file format and endianness.
712 * Use 255 at one end, since no UTF-8 file can use that character. Avoid 0,
713 * so that utilities, like strings, don't grab it as a string. 129 is also
714 * invalid UTF-8, and high enough to be interesting.
715 * Use "lprofr" in the centre to stand for "LLVM Profile Raw", or "lprofR"
716 * for 32-bit platforms.
718 #define INSTR_PROF_RAW_MAGIC_64 (uint64_t)255 << 56 | (uint64_t)'l' << 48 | \
719 (uint64_t)'p' << 40 | (uint64_t)'r' << 32 | (uint64_t)'o' << 24 | \
720 (uint64_t)'f' << 16 | (uint64_t)'r' << 8 | (uint64_t)129
721 #define INSTR_PROF_RAW_MAGIC_32 (uint64_t)255 << 56 | (uint64_t)'l' << 48 | \
722 (uint64_t)'p' << 40 | (uint64_t)'r' << 32 | (uint64_t)'o' << 24 | \
723 (uint64_t)'f' << 16 | (uint64_t)'R' << 8 | (uint64_t)129
725 /* Raw profile format version (start from 1). */
726 #define INSTR_PROF_RAW_VERSION 10
727 /* Indexed profile format version (start from 1). */
728 #define INSTR_PROF_INDEX_VERSION 12
729 /* Coverage mapping format version (start from 0). */
730 #define INSTR_PROF_COVMAP_VERSION 6
732 /* Profile version is always of type uint64_t. Reserve the upper 32 bits in the
733 * version for other variants of profile. We set the 8th most significant bit
734 * (i.e. bit 56) to 1 to indicate if this is an IR-level instrumentation
735 * generated profile, and 0 if this is a Clang FE generated profile.
736 * 1 in bit 57 indicates there are context-sensitive records in the profile.
737 * The 54th bit indicates whether to always instrument loop entry blocks.
738 * The 58th bit indicates whether to always instrument function entry blocks.
739 * The 59th bit indicates whether to use debug info to correlate profiles.
740 * The 60th bit indicates single byte coverage instrumentation.
741 * The 61st bit indicates function entry instrumentation only.
742 * The 62nd bit indicates whether memory profile information is present.
743 * The 63rd bit indicates if this is a temporal profile.
745 #define VARIANT_MASKS_ALL 0xffffffff00000000ULL
746 #define GET_VERSION(V) ((V) & ~VARIANT_MASKS_ALL)
747 #define VARIANT_MASK_INSTR_LOOP_ENTRIES (0x1ULL << 55)
748 #define VARIANT_MASK_IR_PROF (0x1ULL << 56)
749 #define VARIANT_MASK_CSIR_PROF (0x1ULL << 57)
750 #define VARIANT_MASK_INSTR_ENTRY (0x1ULL << 58)
751 #define VARIANT_MASK_DBG_CORRELATE (0x1ULL << 59)
752 #define VARIANT_MASK_BYTE_COVERAGE (0x1ULL << 60)
753 #define VARIANT_MASK_FUNCTION_ENTRY_ONLY (0x1ULL << 61)
754 #define VARIANT_MASK_MEMPROF (0x1ULL << 62)
755 #define VARIANT_MASK_TEMPORAL_PROF (0x1ULL << 63)
756 #define INSTR_PROF_RAW_VERSION_VAR __llvm_profile_raw_version
757 #define INSTR_PROF_PROFILE_RUNTIME_VAR __llvm_profile_runtime
758 #define INSTR_PROF_PROFILE_COUNTER_BIAS_VAR __llvm_profile_counter_bias
759 #define INSTR_PROF_PROFILE_BITMAP_BIAS_VAR __llvm_profile_bitmap_bias
760 #define INSTR_PROF_PROFILE_SET_TIMESTAMP __llvm_profile_set_timestamp
761 #define INSTR_PROF_PROFILE_SAMPLING_VAR __llvm_profile_sampling
763 /* The variable that holds the name of the profile data
764 * specified via command line. */
765 #define INSTR_PROF_PROFILE_NAME_VAR __llvm_profile_filename
767 /* section name strings common to all targets other
769 #define INSTR_PROF_DATA_COMMON __llvm_prf_data
770 #define INSTR_PROF_NAME_COMMON __llvm_prf_names
771 #define INSTR_PROF_VNAME_COMMON __llvm_prf_vns
772 #define INSTR_PROF_CNTS_COMMON __llvm_prf_cnts
773 #define INSTR_PROF_BITS_COMMON __llvm_prf_bits
774 #define INSTR_PROF_VALS_COMMON __llvm_prf_vals
775 #define INSTR_PROF_VNODES_COMMON __llvm_prf_vnds
776 #define INSTR_PROF_VTAB_COMMON __llvm_prf_vtab
777 #define INSTR_PROF_COVMAP_COMMON __llvm_covmap
778 #define INSTR_PROF_COVFUN_COMMON __llvm_covfun
779 #define INSTR_PROF_COVDATA_COMMON __llvm_covdata
780 #define INSTR_PROF_COVNAME_COMMON __llvm_covnames
781 #define INSTR_PROF_ORDERFILE_COMMON __llvm_orderfile
782 #define INSTR_PROF_COVINIT_COMMON __llvm_covinit
784 /* Windows section names. Because these section names contain dollar characters,
785 * they must be quoted.
787 #define INSTR_PROF_DATA_COFF ".lprfd$M"
788 #define INSTR_PROF_NAME_COFF ".lprfn$M"
789 #define INSTR_PROF_VNAME_COFF ".lprfvn$M"
790 #define INSTR_PROF_CNTS_COFF ".lprfc$M"
791 #define INSTR_PROF_BITS_COFF ".lprfb$M"
792 #define INSTR_PROF_VALS_COFF ".lprfv$M"
793 #define INSTR_PROF_VNODES_COFF ".lprfnd$M"
794 #define INSTR_PROF_VTAB_COFF ".lprfvt$M"
795 #define INSTR_PROF_COVMAP_COFF ".lcovmap$M"
796 #define INSTR_PROF_COVFUN_COFF ".lcovfun$M"
797 /* Since cov data and cov names sections are not allocated, we don't need to
798 * access them at runtime.
800 #define INSTR_PROF_COVDATA_COFF ".lcovd"
801 #define INSTR_PROF_COVNAME_COFF ".lcovn"
802 #define INSTR_PROF_ORDERFILE_COFF ".lorderfile$M"
804 // FIXME: Placeholder for Windows. Windows currently does not initialize
805 // the GCOV functions in the runtime.
806 #define INSTR_PROF_COVINIT_COFF ".lcovd$M"
809 /* Runtime section names and name strings. */
810 #define INSTR_PROF_DATA_SECT_NAME INSTR_PROF_DATA_COFF
811 #define INSTR_PROF_NAME_SECT_NAME INSTR_PROF_NAME_COFF
812 #define INSTR_PROF_CNTS_SECT_NAME INSTR_PROF_CNTS_COFF
813 #define INSTR_PROF_BITS_SECT_NAME INSTR_PROF_BITS_COFF
814 #define INSTR_PROF_VTAB_SECT_NAME INSTR_PROF_VTAB_COFF
815 #define INSTR_PROF_VNAME_SECT_NAME INSTR_PROF_VNAME_COFF
816 /* Array of pointers. Each pointer points to a list
817 * of value nodes associated with one value site.
819 #define INSTR_PROF_VALS_SECT_NAME INSTR_PROF_VALS_COFF
820 /* Value profile nodes section. */
821 #define INSTR_PROF_VNODES_SECT_NAME INSTR_PROF_VNODES_COFF
822 #define INSTR_PROF_COVMAP_SECT_NAME INSTR_PROF_COVMAP_COFF
823 #define INSTR_PROF_COVFUN_SECT_NAME INSTR_PROF_COVFUN_COFF
824 #define INSTR_PROF_COVDATA_SECT_NAME INSTR_PROF_COVDATA_COFF
825 #define INSTR_PROF_COVNAME_SECT_NAME INSTR_PROF_COVNAME_COFF
826 #define INSTR_PROF_ORDERFILE_SECT_NAME INSTR_PROF_ORDERFILE_COFF
827 #define INSTR_PROF_COVINIT_SECT_NAME INSTR_PROF_COVINIT_COFF
829 /* Runtime section names and name strings. */
830 #define INSTR_PROF_DATA_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_DATA_COMMON)
831 #define INSTR_PROF_NAME_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_NAME_COMMON)
832 #define INSTR_PROF_CNTS_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_CNTS_COMMON)
833 #define INSTR_PROF_BITS_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_BITS_COMMON)
834 #define INSTR_PROF_VTAB_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_VTAB_COMMON)
835 #define INSTR_PROF_VNAME_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_VNAME_COMMON)
836 /* Array of pointers. Each pointer points to a list
837 * of value nodes associated with one value site.
839 #define INSTR_PROF_VALS_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_VALS_COMMON)
840 /* Value profile nodes section. */
841 #define INSTR_PROF_VNODES_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_VNODES_COMMON)
842 #define INSTR_PROF_COVMAP_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_COVMAP_COMMON)
843 #define INSTR_PROF_COVFUN_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_COVFUN_COMMON)
844 #define INSTR_PROF_COVDATA_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_COVDATA_COMMON)
845 #define INSTR_PROF_COVNAME_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_COVNAME_COMMON)
846 /* Order file instrumentation. */
847 #define INSTR_PROF_ORDERFILE_SECT_NAME \
848 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_COMMON)
849 #define INSTR_PROF_COVINIT_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_COVINIT_COMMON)
852 #define INSTR_PROF_ORDERFILE_BUFFER_NAME _llvm_order_file_buffer
853 #define INSTR_PROF_ORDERFILE_BUFFER_NAME_STR \
854 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_BUFFER_NAME)
855 #define INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME _llvm_order_file_buffer_idx
856 #define INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME_STR \
857 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME)
859 /* Macros to define start/stop section symbol for a given
860 * section on Linux. For instance
861 * INSTR_PROF_SECT_START(INSTR_PROF_DATA_SECT_NAME) will
862 * expand to __start___llvm_prof_data
864 #define INSTR_PROF_SECT_START(Sect) \
865 INSTR_PROF_CONCAT(__start_,Sect)
866 #define INSTR_PROF_SECT_STOP(Sect) \
867 INSTR_PROF_CONCAT(__stop_,Sect)
869 /* Value Profiling API linkage name. */
870 #define INSTR_PROF_VALUE_PROF_FUNC __llvm_profile_instrument_target
871 #define INSTR_PROF_VALUE_PROF_FUNC_STR \
872 INSTR_PROF_QUOTE(INSTR_PROF_VALUE_PROF_FUNC)
873 #define INSTR_PROF_VALUE_PROF_MEMOP_FUNC __llvm_profile_instrument_memop
874 #define INSTR_PROF_VALUE_PROF_MEMOP_FUNC_STR \
875 INSTR_PROF_QUOTE(INSTR_PROF_VALUE_PROF_MEMOP_FUNC)
877 /* InstrProfile per-function control data alignment. */
878 #define INSTR_PROF_DATA_ALIGNMENT 8
880 /* The data structure that represents a tracked value by the
883 typedef struct InstrProfValueData {
884 /* Profiled value. */
886 /* Number of times the value appears in the training run. */
888 } InstrProfValueData;
890 #endif /* INSTR_PROF_DATA_INC */
892 #ifndef INSTR_ORDER_FILE_INC
893 /* The maximal # of functions: 128*1024 (the buffer size will be 128*4 KB). */
894 #define INSTR_ORDER_FILE_BUFFER_SIZE 131072
895 #define INSTR_ORDER_FILE_BUFFER_BITS 17
896 #define INSTR_ORDER_FILE_BUFFER_MASK 0x1ffff
897 #endif /* INSTR_ORDER_FILE_INC */
899 #undef INSTR_PROF_DATA_DEFINED
902 #undef COVMAP_V2_OR_V3
904 #ifdef INSTR_PROF_VALUE_PROF_MEMOP_API
907 #define INSTR_PROF_INLINE inline
909 #define INSTR_PROF_INLINE
912 /* The value range buckets (22 buckets) for the memop size value profiling looks
938 * Each range has a 'representative value' which is the lower end value of the
939 * range and used to store in the runtime profile data records and the VP
940 * metadata. For example, it's 2 for [2, 2] and 64 for [65, 127].
942 #define INSTR_PROF_NUM_BUCKETS 22
945 * Clz and Popcount. This code was copied from
946 * compiler-rt/lib/fuzzer/{FuzzerBuiltins.h,FuzzerBuiltinsMsvc.h} and
947 * llvm/include/llvm/Support/MathExtras.h.
949 #if defined(_MSC_VER) && !defined(__clang__)
952 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
953 int InstProfClzll(unsigned long long X) {
954 unsigned long LeadZeroIdx = 0;
955 #if !defined(_M_ARM64) && !defined(_M_X64)
956 // Scan the high 32 bits.
957 if (_BitScanReverse(&LeadZeroIdx, (unsigned long)(X >> 32)))
958 return (int)(63 - (LeadZeroIdx + 32)); // Create a bit offset
960 // Scan the low 32 bits.
961 if (_BitScanReverse(&LeadZeroIdx, (unsigned long)(X)))
962 return (int)(63 - LeadZeroIdx);
964 if (_BitScanReverse64(&LeadZeroIdx, X)) return 63 - LeadZeroIdx;
968 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
969 int InstProfPopcountll(unsigned long long X) {
970 // This code originates from https://reviews.llvm.org/rG30626254510f.
971 unsigned long long v = X;
972 v = v - ((v >> 1) & 0x5555555555555555ULL);
973 v = (v & 0x3333333333333333ULL) + ((v >> 2) & 0x3333333333333333ULL);
974 v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0FULL;
975 return (int)((unsigned long long)(v * 0x0101010101010101ULL) >> 56);
980 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
981 int InstProfClzll(unsigned long long X) { return __builtin_clzll(X); }
982 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
983 int InstProfPopcountll(unsigned long long X) { return __builtin_popcountll(X); }
985 #endif /* defined(_MSC_VER) && !defined(__clang__) */
989 /* Map an (observed) memop size value to the representative value of its range.
990 * For example, 5 -> 5, 22 -> 17, 99 -> 65, 256 -> 256, 1001 -> 513. */
991 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE uint64_t
992 InstrProfGetRangeRepValue(uint64_t Value) {
994 // The first ranges are individually tracked. Use the value as is.
996 else if (Value >= 513)
997 // The last range is mapped to its lowest value.
999 else if (InstProfPopcountll(Value) == 1)
1000 // If it's a power of two, use it as is.
1003 // Otherwise, take to the previous power of two + 1.
1004 return (UINT64_C(1) << (64 - InstProfClzll(Value) - 1)) + 1;
1007 /* Return true if the range that an (observed) memop size value belongs to has
1008 * only a single value in the range. For example, 0 -> true, 8 -> true, 10 ->
1009 * false, 64 -> true, 100 -> false, 513 -> false. */
1010 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE unsigned
1011 InstrProfIsSingleValRange(uint64_t Value) {
1013 // The first ranges are individually tracked.
1015 else if (InstProfPopcountll(Value) == 1)
1016 // If it's a power of two, there's only one value.
1019 // Otherwise, there's more than one value in the range.
1023 #endif /* INSTR_PROF_VALUE_PROF_MEMOP_API */