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 master 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 master 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 master 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 /* INSTR_PROF_DATA start. */
66 /* Definition of member fields of the per-function control structure. */
67 #ifndef INSTR_PROF_DATA
68 #define INSTR_PROF_DATA(Type, LLVMType, Name, Initializer)
70 #define INSTR_PROF_DATA_DEFINED
72 INSTR_PROF_DATA(const uint64_t, llvm::Type::getInt64Ty(Ctx), NameRef, \
73 ConstantInt::get(llvm::Type::getInt64Ty(Ctx), \
74 IndexedInstrProf::ComputeHash(getPGOFuncNameVarInitializer(Inc->getName()))))
75 INSTR_PROF_DATA(const uint64_t, llvm::Type::getInt64Ty(Ctx), FuncHash, \
76 ConstantInt::get(llvm::Type::getInt64Ty(Ctx), \
77 Inc->getHash()->getZExtValue()))
78 INSTR_PROF_DATA(const IntPtrT, llvm::Type::getInt64PtrTy(Ctx), CounterPtr, \
79 ConstantExpr::getBitCast(CounterPtr, \
80 llvm::Type::getInt64PtrTy(Ctx)))
81 /* This is used to map function pointers for the indirect call targets to
82 * function name hashes during the conversion from raw to merged profile
85 INSTR_PROF_DATA(const IntPtrT, llvm::Type::getInt8PtrTy(Ctx), FunctionPointer, \
87 INSTR_PROF_DATA(IntPtrT, llvm::Type::getInt8PtrTy(Ctx), Values, \
89 INSTR_PROF_DATA(const uint32_t, llvm::Type::getInt32Ty(Ctx), NumCounters, \
90 ConstantInt::get(llvm::Type::getInt32Ty(Ctx), NumCounters))
91 INSTR_PROF_DATA(const uint16_t, Int16ArrayTy, NumValueSites[IPVK_Last+1], \
92 ConstantArray::get(Int16ArrayTy, Int16ArrayVals))
93 #undef INSTR_PROF_DATA
94 /* INSTR_PROF_DATA end. */
97 /* This is an internal data structure used by value profiler. It
98 * is defined here to allow serialization code sharing by LLVM
99 * to be used in unit test.
101 * typedef struct ValueProfNode {
102 * // InstrProfValueData VData;
105 * struct ValueProfNode *Next;
108 /* INSTR_PROF_VALUE_NODE start. */
109 #ifndef INSTR_PROF_VALUE_NODE
110 #define INSTR_PROF_VALUE_NODE(Type, LLVMType, Name, Initializer)
112 #define INSTR_PROF_DATA_DEFINED
114 INSTR_PROF_VALUE_NODE(uint64_t, llvm::Type::getInt64Ty(Ctx), Value, \
115 ConstantInt::get(llvm::Type::GetInt64Ty(Ctx), 0))
116 INSTR_PROF_VALUE_NODE(uint64_t, llvm::Type::getInt64Ty(Ctx), Count, \
117 ConstantInt::get(llvm::Type::GetInt64Ty(Ctx), 0))
118 INSTR_PROF_VALUE_NODE(PtrToNodeT, llvm::Type::getInt8PtrTy(Ctx), Next, \
119 ConstantInt::get(llvm::Type::GetInt8PtrTy(Ctx), 0))
120 #undef INSTR_PROF_VALUE_NODE
121 /* INSTR_PROF_VALUE_NODE end. */
123 /* INSTR_PROF_RAW_HEADER start */
124 /* Definition of member fields of the raw profile header data structure. */
125 #ifndef INSTR_PROF_RAW_HEADER
126 #define INSTR_PROF_RAW_HEADER(Type, Name, Initializer)
128 #define INSTR_PROF_DATA_DEFINED
130 INSTR_PROF_RAW_HEADER(uint64_t, Magic, __llvm_profile_get_magic())
131 INSTR_PROF_RAW_HEADER(uint64_t, Version, __llvm_profile_get_version())
132 INSTR_PROF_RAW_HEADER(uint64_t, DataSize, DataSize)
133 INSTR_PROF_RAW_HEADER(uint64_t, CountersSize, CountersSize)
134 INSTR_PROF_RAW_HEADER(uint64_t, NamesSize, NamesSize)
135 INSTR_PROF_RAW_HEADER(uint64_t, CountersDelta, (uintptr_t)CountersBegin)
136 INSTR_PROF_RAW_HEADER(uint64_t, NamesDelta, (uintptr_t)NamesBegin)
137 INSTR_PROF_RAW_HEADER(uint64_t, ValueKindLast, IPVK_Last)
138 #undef INSTR_PROF_RAW_HEADER
139 /* INSTR_PROF_RAW_HEADER end */
141 /* VALUE_PROF_FUNC_PARAM start */
142 /* Definition of parameter types of the runtime API used to do value profiling
143 * for a given value site.
145 #ifndef VALUE_PROF_FUNC_PARAM
146 #define VALUE_PROF_FUNC_PARAM(ArgType, ArgName, ArgLLVMType)
147 #define INSTR_PROF_COMMA
149 #define INSTR_PROF_DATA_DEFINED
150 #define INSTR_PROF_COMMA ,
152 VALUE_PROF_FUNC_PARAM(uint64_t, TargetValue, Type::getInt64Ty(Ctx)) \
154 VALUE_PROF_FUNC_PARAM(void *, Data, Type::getInt8PtrTy(Ctx)) INSTR_PROF_COMMA
155 #ifndef VALUE_RANGE_PROF
156 VALUE_PROF_FUNC_PARAM(uint32_t, CounterIndex, Type::getInt32Ty(Ctx))
157 #else /* VALUE_RANGE_PROF */
158 VALUE_PROF_FUNC_PARAM(uint32_t, CounterIndex, Type::getInt32Ty(Ctx)) \
160 VALUE_PROF_FUNC_PARAM(uint64_t, PreciseRangeStart, Type::getInt64Ty(Ctx)) \
162 VALUE_PROF_FUNC_PARAM(uint64_t, PreciseRangeLast, Type::getInt64Ty(Ctx)) \
164 VALUE_PROF_FUNC_PARAM(uint64_t, LargeValue, Type::getInt64Ty(Ctx))
165 #endif /*VALUE_RANGE_PROF */
166 #undef VALUE_PROF_FUNC_PARAM
167 #undef INSTR_PROF_COMMA
168 /* VALUE_PROF_FUNC_PARAM end */
170 /* VALUE_PROF_KIND start */
171 #ifndef VALUE_PROF_KIND
172 #define VALUE_PROF_KIND(Enumerator, Value, Descr)
174 #define INSTR_PROF_DATA_DEFINED
176 /* For indirect function call value profiling, the addresses of the target
177 * functions are profiled by the instrumented code. The target addresses are
178 * written in the raw profile data and converted to target function name's MD5
179 * hash by the profile reader during deserialization. Typically, this happens
180 * when the raw profile data is read during profile merging.
182 * For this remapping the ProfData is used. ProfData contains both the function
183 * name hash and the function address.
185 VALUE_PROF_KIND(IPVK_IndirectCallTarget, 0, "indirect call target")
186 /* For memory intrinsic functions size profiling. */
187 VALUE_PROF_KIND(IPVK_MemOPSize, 1, "memory intrinsic functions size")
188 /* These two kinds must be the last to be
189 * declared. This is to make sure the string
190 * array created with the template can be
191 * indexed with the kind value.
193 VALUE_PROF_KIND(IPVK_First, IPVK_IndirectCallTarget, "first")
194 VALUE_PROF_KIND(IPVK_Last, IPVK_MemOPSize, "last")
196 #undef VALUE_PROF_KIND
197 /* VALUE_PROF_KIND end */
199 /* COVMAP_FUNC_RECORD start */
200 /* Definition of member fields of the function record structure in coverage
203 #ifndef COVMAP_FUNC_RECORD
204 #define COVMAP_FUNC_RECORD(Type, LLVMType, Name, Initializer)
206 #define INSTR_PROF_DATA_DEFINED
209 COVMAP_FUNC_RECORD(const IntPtrT, llvm::Type::getInt8PtrTy(Ctx), \
210 NamePtr, llvm::ConstantExpr::getBitCast(NamePtr, \
211 llvm::Type::getInt8PtrTy(Ctx)))
212 COVMAP_FUNC_RECORD(const uint32_t, llvm::Type::getInt32Ty(Ctx), NameSize, \
213 llvm::ConstantInt::get(llvm::Type::getInt32Ty(Ctx), \
216 COVMAP_FUNC_RECORD(const int64_t, llvm::Type::getInt64Ty(Ctx), NameRef, \
217 llvm::ConstantInt::get(llvm::Type::getInt64Ty(Ctx), \
218 llvm::IndexedInstrProf::ComputeHash(NameValue)))
220 COVMAP_FUNC_RECORD(const uint32_t, llvm::Type::getInt32Ty(Ctx), DataSize, \
221 llvm::ConstantInt::get(llvm::Type::getInt32Ty(Ctx),\
222 CoverageMapping.size()))
223 COVMAP_FUNC_RECORD(const uint64_t, llvm::Type::getInt64Ty(Ctx), FuncHash, \
224 llvm::ConstantInt::get(llvm::Type::getInt64Ty(Ctx), FuncHash))
225 #undef COVMAP_FUNC_RECORD
226 /* COVMAP_FUNC_RECORD end. */
228 /* COVMAP_HEADER start */
229 /* Definition of member fields of coverage map header.
231 #ifndef COVMAP_HEADER
232 #define COVMAP_HEADER(Type, LLVMType, Name, Initializer)
234 #define INSTR_PROF_DATA_DEFINED
236 COVMAP_HEADER(uint32_t, Int32Ty, NRecords, \
237 llvm::ConstantInt::get(Int32Ty, FunctionRecords.size()))
238 COVMAP_HEADER(uint32_t, Int32Ty, FilenamesSize, \
239 llvm::ConstantInt::get(Int32Ty, FilenamesSize))
240 COVMAP_HEADER(uint32_t, Int32Ty, CoverageSize, \
241 llvm::ConstantInt::get(Int32Ty, CoverageMappingSize))
242 COVMAP_HEADER(uint32_t, Int32Ty, Version, \
243 llvm::ConstantInt::get(Int32Ty, CovMapVersion::CurrentVersion))
245 /* COVMAP_HEADER end. */
248 #ifdef INSTR_PROF_SECT_ENTRY
249 #define INSTR_PROF_DATA_DEFINED
250 INSTR_PROF_SECT_ENTRY(IPSK_data, \
251 INSTR_PROF_QUOTE(INSTR_PROF_DATA_COMMON), \
252 INSTR_PROF_DATA_COFF, "__DATA,")
253 INSTR_PROF_SECT_ENTRY(IPSK_cnts, \
254 INSTR_PROF_QUOTE(INSTR_PROF_CNTS_COMMON), \
255 INSTR_PROF_CNTS_COFF, "__DATA,")
256 INSTR_PROF_SECT_ENTRY(IPSK_name, \
257 INSTR_PROF_QUOTE(INSTR_PROF_NAME_COMMON), \
258 INSTR_PROF_NAME_COFF, "__DATA,")
259 INSTR_PROF_SECT_ENTRY(IPSK_vals, \
260 INSTR_PROF_QUOTE(INSTR_PROF_VALS_COMMON), \
261 INSTR_PROF_VALS_COFF, "__DATA,")
262 INSTR_PROF_SECT_ENTRY(IPSK_vnodes, \
263 INSTR_PROF_QUOTE(INSTR_PROF_VNODES_COMMON), \
264 INSTR_PROF_VNODES_COFF, "__DATA,")
265 INSTR_PROF_SECT_ENTRY(IPSK_covmap, \
266 INSTR_PROF_QUOTE(INSTR_PROF_COVMAP_COMMON), \
267 INSTR_PROF_COVMAP_COFF, "__LLVM_COV,")
268 INSTR_PROF_SECT_ENTRY(IPSK_orderfile, \
269 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_COMMON), \
270 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_COFF), "__DATA,")
272 #undef INSTR_PROF_SECT_ENTRY
276 #ifdef INSTR_PROF_VALUE_PROF_DATA
277 #define INSTR_PROF_DATA_DEFINED
279 #define INSTR_PROF_MAX_NUM_VAL_PER_SITE 255
281 * This is the header of the data structure that defines the on-disk
282 * layout of the value profile data of a particular kind for one function.
284 typedef struct ValueProfRecord {
285 /* The kind of the value profile record. */
288 * The number of value profile sites. It is guaranteed to be non-zero;
289 * otherwise the record for this kind won't be emitted.
291 uint32_t NumValueSites;
293 * The first element of the array that stores the number of profiled
294 * values for each value site. The size of the array is NumValueSites.
295 * Since NumValueSites is greater than zero, there is at least one
296 * element in the array.
298 uint8_t SiteCountArray[1];
301 * The fake declaration is for documentation purpose only.
302 * Align the start of next field to be on 8 byte boundaries.
306 /* The array of value profile data. The size of the array is the sum
307 * of all elements in SiteCountArray[].
308 InstrProfValueData ValueData[];
313 * Return the number of value sites.
315 uint32_t getNumValueSites() const { return NumValueSites; }
317 * Read data from this record and save it to Record.
319 void deserializeTo(InstrProfRecord &Record,
320 InstrProfSymtab *SymTab);
322 * In-place byte swap:
323 * Do byte swap for this instance. \c Old is the original order before
324 * the swap, and \c New is the New byte order.
326 void swapBytes(support::endianness Old, support::endianness New);
331 * Per-function header/control data structure for value profiling
332 * data in indexed format.
334 typedef struct ValueProfData {
336 * Total size in bytes including this field. It must be a multiple
337 * of sizeof(uint64_t).
341 *The number of value profile kinds that has value profile data.
342 * In this implementation, a value profile kind is considered to
343 * have profile data if the number of value profile sites for the
344 * kind is not zero. More aggressively, the implementation can
345 * choose to check the actual data value: if none of the value sites
346 * has any profiled values, the kind can be skipped.
348 uint32_t NumValueKinds;
351 * Following are a sequence of variable length records. The prefix/header
352 * of each record is defined by ValueProfRecord type. The number of
353 * records is NumValueKinds.
354 * ValueProfRecord Record_1;
355 * ValueProfRecord Record_N;
360 * Return the total size in bytes of the on-disk value profile data
361 * given the data stored in Record.
363 static uint32_t getSize(const InstrProfRecord &Record);
365 * Return a pointer to \c ValueProfData instance ready to be streamed.
367 static std::unique_ptr<ValueProfData>
368 serializeFrom(const InstrProfRecord &Record);
370 * Check the integrity of the record.
372 Error checkIntegrity();
374 * Return a pointer to \c ValueProfileData instance ready to be read.
375 * All data in the instance are properly byte swapped. The input
376 * data is assumed to be in little endian order.
378 static Expected<std::unique_ptr<ValueProfData>>
379 getValueProfData(const unsigned char *SrcBuffer,
380 const unsigned char *const SrcBufferEnd,
381 support::endianness SrcDataEndianness);
383 * Swap byte order from \c Endianness order to host byte order.
385 void swapBytesToHost(support::endianness Endianness);
387 * Swap byte order from host byte order to \c Endianness order.
389 void swapBytesFromHost(support::endianness Endianness);
391 * Return the total size of \c ValueProfileData.
393 uint32_t getSize() const { return TotalSize; }
395 * Read data from this data and save it to \c Record.
397 void deserializeTo(InstrProfRecord &Record,
398 InstrProfSymtab *SymTab);
399 void operator delete(void *ptr) { ::operator delete(ptr); }
404 * The closure is designed to abstact away two types of value profile data:
405 * - InstrProfRecord which is the primary data structure used to
406 * represent profile data in host tools (reader, writer, and profile-use)
407 * - value profile runtime data structure suitable to be used by C
410 * Both sources of data need to serialize to disk/memory-buffer in common
411 * format: ValueProfData. The abstraction allows compiler-rt's raw profiler
412 * writer to share the same format and code with indexed profile writer.
414 * For documentation of the member methods below, refer to corresponding methods
415 * in class InstrProfRecord.
417 typedef struct ValueProfRecordClosure {
419 uint32_t (*GetNumValueKinds)(const void *Record);
420 uint32_t (*GetNumValueSites)(const void *Record, uint32_t VKind);
421 uint32_t (*GetNumValueData)(const void *Record, uint32_t VKind);
422 uint32_t (*GetNumValueDataForSite)(const void *R, uint32_t VK, uint32_t S);
425 * After extracting the value profile data from the value profile record,
426 * this method is used to map the in-memory value to on-disk value. If
427 * the method is null, value will be written out untranslated.
429 uint64_t (*RemapValueData)(uint32_t, uint64_t Value);
430 void (*GetValueForSite)(const void *R, InstrProfValueData *Dst, uint32_t K,
432 ValueProfData *(*AllocValueProfData)(size_t TotalSizeInBytes);
433 } ValueProfRecordClosure;
435 INSTR_PROF_VISIBILITY ValueProfRecord *
436 getFirstValueProfRecord(ValueProfData *VPD);
437 INSTR_PROF_VISIBILITY ValueProfRecord *
438 getValueProfRecordNext(ValueProfRecord *VPR);
439 INSTR_PROF_VISIBILITY InstrProfValueData *
440 getValueProfRecordValueData(ValueProfRecord *VPR);
441 INSTR_PROF_VISIBILITY uint32_t
442 getValueProfRecordHeaderSize(uint32_t NumValueSites);
444 #undef INSTR_PROF_VALUE_PROF_DATA
445 #endif /* INSTR_PROF_VALUE_PROF_DATA */
448 #ifdef INSTR_PROF_COMMON_API_IMPL
449 #define INSTR_PROF_DATA_DEFINED
451 #define INSTR_PROF_INLINE inline
452 #define INSTR_PROF_NULLPTR nullptr
454 #define INSTR_PROF_INLINE
455 #define INSTR_PROF_NULLPTR NULL
459 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
463 * Return the \c ValueProfRecord header size including the
466 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
467 uint32_t getValueProfRecordHeaderSize(uint32_t NumValueSites) {
468 uint32_t Size = offsetof(ValueProfRecord, SiteCountArray) +
469 sizeof(uint8_t) * NumValueSites;
470 /* Round the size to multiple of 8 bytes. */
471 Size = (Size + 7) & ~7;
476 * Return the total size of the value profile record including the
477 * header and the value data.
479 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
480 uint32_t getValueProfRecordSize(uint32_t NumValueSites,
481 uint32_t NumValueData) {
482 return getValueProfRecordHeaderSize(NumValueSites) +
483 sizeof(InstrProfValueData) * NumValueData;
487 * Return the pointer to the start of value data array.
489 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
490 InstrProfValueData *getValueProfRecordValueData(ValueProfRecord *This) {
491 return (InstrProfValueData *)((char *)This + getValueProfRecordHeaderSize(
492 This->NumValueSites));
496 * Return the total number of value data for \c This record.
498 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
499 uint32_t getValueProfRecordNumValueData(ValueProfRecord *This) {
500 uint32_t NumValueData = 0;
502 for (I = 0; I < This->NumValueSites; I++)
503 NumValueData += This->SiteCountArray[I];
508 * Use this method to advance to the next \c This \c ValueProfRecord.
510 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
511 ValueProfRecord *getValueProfRecordNext(ValueProfRecord *This) {
512 uint32_t NumValueData = getValueProfRecordNumValueData(This);
513 return (ValueProfRecord *)((char *)This +
514 getValueProfRecordSize(This->NumValueSites,
519 * Return the first \c ValueProfRecord instance.
521 INSTR_PROF_VISIBILITY INSTR_PROF_INLINE
522 ValueProfRecord *getFirstValueProfRecord(ValueProfData *This) {
523 return (ValueProfRecord *)((char *)This + sizeof(ValueProfData));
526 /* Closure based interfaces. */
529 * Return the total size in bytes of the on-disk value profile data
530 * given the data stored in Record.
532 INSTR_PROF_VISIBILITY uint32_t
533 getValueProfDataSize(ValueProfRecordClosure *Closure) {
535 uint32_t TotalSize = sizeof(ValueProfData);
536 const void *Record = Closure->Record;
538 for (Kind = IPVK_First; Kind <= IPVK_Last; Kind++) {
539 uint32_t NumValueSites = Closure->GetNumValueSites(Record, Kind);
542 TotalSize += getValueProfRecordSize(NumValueSites,
543 Closure->GetNumValueData(Record, Kind));
549 * Extract value profile data of a function for the profile kind \c ValueKind
550 * from the \c Closure and serialize the data into \c This record instance.
552 INSTR_PROF_VISIBILITY void
553 serializeValueProfRecordFrom(ValueProfRecord *This,
554 ValueProfRecordClosure *Closure,
555 uint32_t ValueKind, uint32_t NumValueSites) {
557 const void *Record = Closure->Record;
558 This->Kind = ValueKind;
559 This->NumValueSites = NumValueSites;
560 InstrProfValueData *DstVD = getValueProfRecordValueData(This);
562 for (S = 0; S < NumValueSites; S++) {
563 uint32_t ND = Closure->GetNumValueDataForSite(Record, ValueKind, S);
564 This->SiteCountArray[S] = ND;
565 Closure->GetValueForSite(Record, DstVD, ValueKind, S);
571 * Extract value profile data of a function from the \c Closure
572 * and serialize the data into \c DstData if it is not NULL or heap
573 * memory allocated by the \c Closure's allocator method. If \c
574 * DstData is not null, the caller is expected to set the TotalSize
577 INSTR_PROF_VISIBILITY ValueProfData *
578 serializeValueProfDataFrom(ValueProfRecordClosure *Closure,
579 ValueProfData *DstData) {
582 DstData ? DstData->TotalSize : getValueProfDataSize(Closure);
585 DstData ? DstData : Closure->AllocValueProfData(TotalSize);
587 VPD->TotalSize = TotalSize;
588 VPD->NumValueKinds = Closure->GetNumValueKinds(Closure->Record);
589 ValueProfRecord *VR = getFirstValueProfRecord(VPD);
590 for (Kind = IPVK_First; Kind <= IPVK_Last; Kind++) {
591 uint32_t NumValueSites = Closure->GetNumValueSites(Closure->Record, Kind);
594 serializeValueProfRecordFrom(VR, Closure, Kind, NumValueSites);
595 VR = getValueProfRecordNext(VR);
600 #undef INSTR_PROF_COMMON_API_IMPL
601 #endif /* INSTR_PROF_COMMON_API_IMPL */
603 /*============================================================================*/
605 #ifndef INSTR_PROF_DATA_DEFINED
607 #ifndef INSTR_PROF_DATA_INC
608 #define INSTR_PROF_DATA_INC
611 #define INSTR_PROF_SIMPLE_QUOTE(x) #x
612 #define INSTR_PROF_QUOTE(x) INSTR_PROF_SIMPLE_QUOTE(x)
613 #define INSTR_PROF_SIMPLE_CONCAT(x,y) x ## y
614 #define INSTR_PROF_CONCAT(x,y) INSTR_PROF_SIMPLE_CONCAT(x,y)
616 /* Magic number to detect file format and endianness.
617 * Use 255 at one end, since no UTF-8 file can use that character. Avoid 0,
618 * so that utilities, like strings, don't grab it as a string. 129 is also
619 * invalid UTF-8, and high enough to be interesting.
620 * Use "lprofr" in the centre to stand for "LLVM Profile Raw", or "lprofR"
621 * for 32-bit platforms.
623 #define INSTR_PROF_RAW_MAGIC_64 (uint64_t)255 << 56 | (uint64_t)'l' << 48 | \
624 (uint64_t)'p' << 40 | (uint64_t)'r' << 32 | (uint64_t)'o' << 24 | \
625 (uint64_t)'f' << 16 | (uint64_t)'r' << 8 | (uint64_t)129
626 #define INSTR_PROF_RAW_MAGIC_32 (uint64_t)255 << 56 | (uint64_t)'l' << 48 | \
627 (uint64_t)'p' << 40 | (uint64_t)'r' << 32 | (uint64_t)'o' << 24 | \
628 (uint64_t)'f' << 16 | (uint64_t)'R' << 8 | (uint64_t)129
630 /* Raw profile format version (start from 1). */
631 #define INSTR_PROF_RAW_VERSION 4
632 /* Indexed profile format version (start from 1). */
633 #define INSTR_PROF_INDEX_VERSION 5
634 /* Coverage mapping format vresion (start from 0). */
635 #define INSTR_PROF_COVMAP_VERSION 2
637 /* Profile version is always of type uint64_t. Reserve the upper 8 bits in the
638 * version for other variants of profile. We set the lowest bit of the upper 8
639 * bits (i.e. bit 56) to 1 to indicate if this is an IR-level instrumentaiton
640 * generated profile, and 0 if this is a Clang FE generated profile.
641 * 1 in bit 57 indicates there are context-sensitive records in the profile.
643 #define VARIANT_MASKS_ALL 0xff00000000000000ULL
644 #define GET_VERSION(V) ((V) & ~VARIANT_MASKS_ALL)
645 #define VARIANT_MASK_IR_PROF (0x1ULL << 56)
646 #define VARIANT_MASK_CSIR_PROF (0x1ULL << 57)
647 #define INSTR_PROF_RAW_VERSION_VAR __llvm_profile_raw_version
648 #define INSTR_PROF_PROFILE_RUNTIME_VAR __llvm_profile_runtime
650 /* The variable that holds the name of the profile data
651 * specified via command line. */
652 #define INSTR_PROF_PROFILE_NAME_VAR __llvm_profile_filename
654 /* section name strings common to all targets other
656 #define INSTR_PROF_DATA_COMMON __llvm_prf_data
657 #define INSTR_PROF_NAME_COMMON __llvm_prf_names
658 #define INSTR_PROF_CNTS_COMMON __llvm_prf_cnts
659 #define INSTR_PROF_VALS_COMMON __llvm_prf_vals
660 #define INSTR_PROF_VNODES_COMMON __llvm_prf_vnds
661 #define INSTR_PROF_COVMAP_COMMON __llvm_covmap
662 #define INSTR_PROF_ORDERFILE_COMMON __llvm_orderfile
663 /* Windows section names. Because these section names contain dollar characters,
664 * they must be quoted.
666 #define INSTR_PROF_DATA_COFF ".lprfd$M"
667 #define INSTR_PROF_NAME_COFF ".lprfn$M"
668 #define INSTR_PROF_CNTS_COFF ".lprfc$M"
669 #define INSTR_PROF_VALS_COFF ".lprfv$M"
670 #define INSTR_PROF_VNODES_COFF ".lprfnd$M"
671 #define INSTR_PROF_COVMAP_COFF ".lcovmap$M"
672 #define INSTR_PROF_ORDERFILE_COFF ".lorderfile$M"
675 /* Runtime section names and name strings. */
676 #define INSTR_PROF_DATA_SECT_NAME INSTR_PROF_DATA_COFF
677 #define INSTR_PROF_NAME_SECT_NAME INSTR_PROF_NAME_COFF
678 #define INSTR_PROF_CNTS_SECT_NAME INSTR_PROF_CNTS_COFF
679 /* Array of pointers. Each pointer points to a list
680 * of value nodes associated with one value site.
682 #define INSTR_PROF_VALS_SECT_NAME INSTR_PROF_VALS_COFF
683 /* Value profile nodes section. */
684 #define INSTR_PROF_VNODES_SECT_NAME INSTR_PROF_VNODES_COFF
685 #define INSTR_PROF_COVMAP_SECT_NAME INSTR_PROF_COVMAP_COFF
686 #define INSTR_PROF_ORDERFILE_SECT_NAME INSTR_PROF_ORDERFILE_COFF
688 /* Runtime section names and name strings. */
689 #define INSTR_PROF_DATA_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_DATA_COMMON)
690 #define INSTR_PROF_NAME_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_NAME_COMMON)
691 #define INSTR_PROF_CNTS_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_CNTS_COMMON)
692 /* Array of pointers. Each pointer points to a list
693 * of value nodes associated with one value site.
695 #define INSTR_PROF_VALS_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_VALS_COMMON)
696 /* Value profile nodes section. */
697 #define INSTR_PROF_VNODES_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_VNODES_COMMON)
698 #define INSTR_PROF_COVMAP_SECT_NAME INSTR_PROF_QUOTE(INSTR_PROF_COVMAP_COMMON)
699 /* Order file instrumentation. */
700 #define INSTR_PROF_ORDERFILE_SECT_NAME \
701 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_COMMON)
704 #define INSTR_PROF_ORDERFILE_BUFFER_NAME _llvm_order_file_buffer
705 #define INSTR_PROF_ORDERFILE_BUFFER_NAME_STR \
706 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_BUFFER_NAME)
707 #define INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME _llvm_order_file_buffer_idx
708 #define INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME_STR \
709 INSTR_PROF_QUOTE(INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME)
711 /* Macros to define start/stop section symbol for a given
712 * section on Linux. For instance
713 * INSTR_PROF_SECT_START(INSTR_PROF_DATA_SECT_NAME) will
714 * expand to __start___llvm_prof_data
716 #define INSTR_PROF_SECT_START(Sect) \
717 INSTR_PROF_CONCAT(__start_,Sect)
718 #define INSTR_PROF_SECT_STOP(Sect) \
719 INSTR_PROF_CONCAT(__stop_,Sect)
721 /* Value Profiling API linkage name. */
722 #define INSTR_PROF_VALUE_PROF_FUNC __llvm_profile_instrument_target
723 #define INSTR_PROF_VALUE_PROF_FUNC_STR \
724 INSTR_PROF_QUOTE(INSTR_PROF_VALUE_PROF_FUNC)
725 #define INSTR_PROF_VALUE_RANGE_PROF_FUNC __llvm_profile_instrument_range
726 #define INSTR_PROF_VALUE_RANGE_PROF_FUNC_STR \
727 INSTR_PROF_QUOTE(INSTR_PROF_VALUE_RANGE_PROF_FUNC)
729 /* InstrProfile per-function control data alignment. */
730 #define INSTR_PROF_DATA_ALIGNMENT 8
732 /* The data structure that represents a tracked value by the
735 typedef struct InstrProfValueData {
736 /* Profiled value. */
738 /* Number of times the value appears in the training run. */
740 } InstrProfValueData;
742 #endif /* INSTR_PROF_DATA_INC */
744 #ifndef INSTR_ORDER_FILE_INC
745 // The maximal # of functions: 128*1024 (the buffer size will be 128*4 KB).
746 #define INSTR_ORDER_FILE_BUFFER_SIZE 131072
747 #define INSTR_ORDER_FILE_BUFFER_BITS 17
748 #define INSTR_ORDER_FILE_BUFFER_MASK 0x1ffff
749 #endif /* INSTR_ORDER_FILE_INC */
751 #undef INSTR_PROF_DATA_DEFINED