LLVM 19.0.0git
InstrProfCorrelator.cpp
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1//===-- InstrProfCorrelator.cpp -------------------------------------------===//
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
17#include "llvm/Object/MachO.h"
18#include "llvm/Support/Debug.h"
19#include "llvm/Support/Format.h"
21#include <optional>
22
23#define DEBUG_TYPE "correlator"
24
25using namespace llvm;
26
27/// Get profile section.
29 InstrProfSectKind IPSK) {
30 // On COFF, the getInstrProfSectionName returns the section names may followed
31 // by "$M". The linker removes the dollar and everything after it in the final
32 // binary. Do the same to match.
34 auto StripSuffix = [ObjFormat](StringRef N) {
35 return ObjFormat == Triple::COFF ? N.split('$').first : N;
36 };
37 std::string ExpectedSectionName =
38 getInstrProfSectionName(IPSK, ObjFormat,
39 /*AddSegmentInfo=*/false);
40 ExpectedSectionName = StripSuffix(ExpectedSectionName);
41 for (auto &Section : Obj.sections()) {
42 if (auto SectionName = Section.getName())
43 if (*SectionName == ExpectedSectionName)
44 return Section;
45 }
46 return make_error<InstrProfError>(
47 instrprof_error::unable_to_correlate_profile,
48 "could not find section (" + Twine(ExpectedSectionName) + ")");
49}
50
51const char *InstrProfCorrelator::FunctionNameAttributeName = "Function Name";
52const char *InstrProfCorrelator::CFGHashAttributeName = "CFG Hash";
53const char *InstrProfCorrelator::NumCountersAttributeName = "Num Counters";
54
56InstrProfCorrelator::Context::get(std::unique_ptr<MemoryBuffer> Buffer,
57 const object::ObjectFile &Obj,
58 ProfCorrelatorKind FileKind) {
59 auto C = std::make_unique<Context>();
60 auto CountersSection = getInstrProfSection(Obj, IPSK_cnts);
61 if (auto Err = CountersSection.takeError())
62 return std::move(Err);
63 if (FileKind == InstrProfCorrelator::BINARY) {
64 auto DataSection = getInstrProfSection(Obj, IPSK_covdata);
65 if (auto Err = DataSection.takeError())
66 return std::move(Err);
67 auto DataOrErr = DataSection->getContents();
68 if (!DataOrErr)
69 return DataOrErr.takeError();
70 auto NameSection = getInstrProfSection(Obj, IPSK_covname);
71 if (auto Err = NameSection.takeError())
72 return std::move(Err);
73 auto NameOrErr = NameSection->getContents();
74 if (!NameOrErr)
75 return NameOrErr.takeError();
76 C->DataStart = DataOrErr->data();
77 C->DataEnd = DataOrErr->data() + DataOrErr->size();
78 C->NameStart = NameOrErr->data();
79 C->NameSize = NameOrErr->size();
80 }
81 C->Buffer = std::move(Buffer);
82 C->CountersSectionStart = CountersSection->getAddress();
83 C->CountersSectionEnd = C->CountersSectionStart + CountersSection->getSize();
84 // In COFF object file, there's a null byte at the beginning of the counter
85 // section which doesn't exist in raw profile.
87 ++C->CountersSectionStart;
88
89 C->ShouldSwapBytes = Obj.isLittleEndian() != sys::IsLittleEndianHost;
90 return Expected<std::unique_ptr<Context>>(std::move(C));
91}
92
95 if (FileKind == DEBUG_INFO) {
96 auto DsymObjectsOrErr =
98 if (auto Err = DsymObjectsOrErr.takeError())
99 return std::move(Err);
100 if (!DsymObjectsOrErr->empty()) {
101 // TODO: Enable profile correlation when there are multiple objects in a
102 // dSYM bundle.
103 if (DsymObjectsOrErr->size() > 1)
104 return make_error<InstrProfError>(
106 "using multiple objects is not yet supported");
107 Filename = *DsymObjectsOrErr->begin();
108 }
109 auto BufferOrErr = errorOrToExpected(MemoryBuffer::getFile(Filename));
110 if (auto Err = BufferOrErr.takeError())
111 return std::move(Err);
112
113 return get(std::move(*BufferOrErr), FileKind);
114 }
115 if (FileKind == BINARY) {
116 auto BufferOrErr = errorOrToExpected(MemoryBuffer::getFile(Filename));
117 if (auto Err = BufferOrErr.takeError())
118 return std::move(Err);
119
120 return get(std::move(*BufferOrErr), FileKind);
121 }
122 return make_error<InstrProfError>(
124 "unsupported correlation kind (only DWARF debug info and Binary format "
125 "(ELF/COFF) are supported)");
126}
127
129InstrProfCorrelator::get(std::unique_ptr<MemoryBuffer> Buffer,
130 ProfCorrelatorKind FileKind) {
131 auto BinOrErr = object::createBinary(*Buffer);
132 if (auto Err = BinOrErr.takeError())
133 return std::move(Err);
134
135 if (auto *Obj = dyn_cast<object::ObjectFile>(BinOrErr->get())) {
136 auto CtxOrErr = Context::get(std::move(Buffer), *Obj, FileKind);
137 if (auto Err = CtxOrErr.takeError())
138 return std::move(Err);
139 auto T = Obj->makeTriple();
140 if (T.isArch64Bit())
141 return InstrProfCorrelatorImpl<uint64_t>::get(std::move(*CtxOrErr), *Obj,
142 FileKind);
143 if (T.isArch32Bit())
144 return InstrProfCorrelatorImpl<uint32_t>::get(std::move(*CtxOrErr), *Obj,
145 FileKind);
146 }
147 return make_error<InstrProfError>(
149}
150
151std::optional<size_t> InstrProfCorrelator::getDataSize() const {
152 if (auto *C = dyn_cast<InstrProfCorrelatorImpl<uint32_t>>(this)) {
153 return C->getDataSize();
154 } else if (auto *C = dyn_cast<InstrProfCorrelatorImpl<uint64_t>>(this)) {
155 return C->getDataSize();
156 }
157 return {};
158}
159
160namespace llvm {
161
162template <>
164 std::unique_ptr<InstrProfCorrelator::Context> Ctx)
166 std::move(Ctx)) {}
167template <>
169 std::unique_ptr<InstrProfCorrelator::Context> Ctx)
171 std::move(Ctx)) {}
172template <>
174 return C->getKind() == InstrProfCorrelatorKind::CK_32Bit;
175}
176template <>
178 return C->getKind() == InstrProfCorrelatorKind::CK_64Bit;
179}
180
181} // end namespace llvm
182
183template <class IntPtrT>
186 std::unique_ptr<InstrProfCorrelator::Context> Ctx,
187 const object::ObjectFile &Obj, ProfCorrelatorKind FileKind) {
188 if (FileKind == DEBUG_INFO) {
189 if (Obj.isELF() || Obj.isMachO()) {
190 auto DICtx = DWARFContext::create(Obj);
191 return std::make_unique<DwarfInstrProfCorrelator<IntPtrT>>(
192 std::move(DICtx), std::move(Ctx));
193 }
194 return make_error<InstrProfError>(
195 instrprof_error::unable_to_correlate_profile,
196 "unsupported debug info format (only DWARF is supported)");
197 }
198 if (Obj.isELF() || Obj.isCOFF())
199 return std::make_unique<BinaryInstrProfCorrelator<IntPtrT>>(std::move(Ctx));
200 return make_error<InstrProfError>(
201 instrprof_error::unable_to_correlate_profile,
202 "unsupported binary format (only ELF and COFF are supported)");
203}
204
205template <class IntPtrT>
207 assert(Data.empty() && Names.empty() && NamesVec.empty());
208 correlateProfileDataImpl(MaxWarnings);
209 if (this->Data.empty())
210 return make_error<InstrProfError>(
211 instrprof_error::unable_to_correlate_profile,
212 "could not find any profile data metadata in correlated file");
213 Error Result = correlateProfileNameImpl();
214 this->CounterOffsets.clear();
215 this->NamesVec.clear();
216 return Result;
217}
218
219template <> struct yaml::MappingTraits<InstrProfCorrelator::CorrelationData> {
220 static void mapping(yaml::IO &io,
222 io.mapRequired("Probes", Data.Probes);
223 }
224};
225
226template <> struct yaml::MappingTraits<InstrProfCorrelator::Probe> {
227 static void mapping(yaml::IO &io, InstrProfCorrelator::Probe &P) {
228 io.mapRequired("Function Name", P.FunctionName);
229 io.mapOptional("Linkage Name", P.LinkageName);
230 io.mapRequired("CFG Hash", P.CFGHash);
231 io.mapRequired("Counter Offset", P.CounterOffset);
232 io.mapRequired("Num Counters", P.NumCounters);
233 io.mapOptional("File", P.FilePath);
234 io.mapOptional("Line", P.LineNumber);
235 }
236};
237
238template <> struct yaml::SequenceElementTraits<InstrProfCorrelator::Probe> {
239 static const bool flow = false;
240};
241
242template <class IntPtrT>
244 raw_ostream &OS) {
246 correlateProfileDataImpl(MaxWarnings, &Data);
247 if (Data.Probes.empty())
248 return make_error<InstrProfError>(
249 instrprof_error::unable_to_correlate_profile,
250 "could not find any profile data metadata in debug info");
251 yaml::Output YamlOS(OS);
252 YamlOS << Data;
253 return Error::success();
254}
255
256template <class IntPtrT>
258 uint64_t CFGHash,
259 IntPtrT CounterOffset,
260 IntPtrT FunctionPtr,
261 uint32_t NumCounters) {
262 // Check if a probe was already added for this counter offset.
263 if (!CounterOffsets.insert(CounterOffset).second)
264 return;
265 Data.push_back({
266 maybeSwap<uint64_t>(NameRef),
267 maybeSwap<uint64_t>(CFGHash),
268 // In this mode, CounterPtr actually stores the section relative address
269 // of the counter.
270 maybeSwap<IntPtrT>(CounterOffset),
271 // TODO: MC/DC is not yet supported.
272 /*BitmapOffset=*/maybeSwap<IntPtrT>(0),
273 maybeSwap<IntPtrT>(FunctionPtr),
274 // TODO: Value profiling is not yet supported.
275 /*ValuesPtr=*/maybeSwap<IntPtrT>(0),
276 maybeSwap<uint32_t>(NumCounters),
277 /*NumValueSites=*/{maybeSwap<uint16_t>(0), maybeSwap<uint16_t>(0)},
278 // TODO: MC/DC is not yet supported.
279 /*NumBitmapBytes=*/maybeSwap<uint32_t>(0),
280 });
281}
282
283template <class IntPtrT>
284std::optional<uint64_t>
286 auto Locations = Die.getLocations(dwarf::DW_AT_location);
287 if (!Locations) {
288 consumeError(Locations.takeError());
289 return {};
290 }
291 auto &DU = *Die.getDwarfUnit();
292 auto AddressSize = DU.getAddressByteSize();
293 for (auto &Location : *Locations) {
294 DataExtractor Data(Location.Expr, DICtx->isLittleEndian(), AddressSize);
295 DWARFExpression Expr(Data, AddressSize);
296 for (auto &Op : Expr) {
297 if (Op.getCode() == dwarf::DW_OP_addr) {
298 return Op.getRawOperand(0);
299 } else if (Op.getCode() == dwarf::DW_OP_addrx) {
301 if (auto SA = DU.getAddrOffsetSectionItem(Index))
302 return SA->Address;
303 }
304 }
305 }
306 return {};
307}
308
309template <class IntPtrT>
311 const auto &ParentDie = Die.getParent();
312 if (!Die.isValid() || !ParentDie.isValid() || Die.isNULL())
313 return false;
314 if (Die.getTag() != dwarf::DW_TAG_variable)
315 return false;
316 if (!ParentDie.isSubprogramDIE())
317 return false;
318 if (!Die.hasChildren())
319 return false;
320 if (const char *Name = Die.getName(DINameKind::ShortName))
322 return false;
323}
324
325template <class IntPtrT>
327 int MaxWarnings, InstrProfCorrelator::CorrelationData *Data) {
328 bool UnlimitedWarnings = (MaxWarnings == 0);
329 // -N suppressed warnings means we can emit up to N (unsuppressed) warnings
330 int NumSuppressedWarnings = -MaxWarnings;
331 auto maybeAddProbe = [&](DWARFDie Die) {
332 if (!isDIEOfProbe(Die))
333 return;
334 std::optional<const char *> FunctionName;
335 std::optional<uint64_t> CFGHash;
336 std::optional<uint64_t> CounterPtr = getLocation(Die);
337 auto FnDie = Die.getParent();
338 auto FunctionPtr = dwarf::toAddress(FnDie.find(dwarf::DW_AT_low_pc));
339 std::optional<uint64_t> NumCounters;
340 for (const DWARFDie &Child : Die.children()) {
341 if (Child.getTag() != dwarf::DW_TAG_LLVM_annotation)
342 continue;
343 auto AnnotationFormName = Child.find(dwarf::DW_AT_name);
344 auto AnnotationFormValue = Child.find(dwarf::DW_AT_const_value);
345 if (!AnnotationFormName || !AnnotationFormValue)
346 continue;
347 auto AnnotationNameOrErr = AnnotationFormName->getAsCString();
348 if (auto Err = AnnotationNameOrErr.takeError()) {
349 consumeError(std::move(Err));
350 continue;
351 }
352 StringRef AnnotationName = *AnnotationNameOrErr;
354 if (auto EC =
355 AnnotationFormValue->getAsCString().moveInto(FunctionName))
356 consumeError(std::move(EC));
357 } else if (AnnotationName == InstrProfCorrelator::CFGHashAttributeName) {
358 CFGHash = AnnotationFormValue->getAsUnsignedConstant();
359 } else if (AnnotationName ==
361 NumCounters = AnnotationFormValue->getAsUnsignedConstant();
362 }
363 }
364 if (!FunctionName || !CFGHash || !CounterPtr || !NumCounters) {
365 if (UnlimitedWarnings || ++NumSuppressedWarnings < 1) {
367 << "Incomplete DIE for function " << FunctionName
368 << ": CFGHash=" << CFGHash << " CounterPtr=" << CounterPtr
369 << " NumCounters=" << NumCounters << "\n";
370 LLVM_DEBUG(Die.dump(dbgs()));
371 }
372 return;
373 }
374 uint64_t CountersStart = this->Ctx->CountersSectionStart;
375 uint64_t CountersEnd = this->Ctx->CountersSectionEnd;
376 if (*CounterPtr < CountersStart || *CounterPtr >= CountersEnd) {
377 if (UnlimitedWarnings || ++NumSuppressedWarnings < 1) {
379 << format("CounterPtr out of range for function %s: Actual=0x%x "
380 "Expected=[0x%x, 0x%x)\n",
381 *FunctionName, *CounterPtr, CountersStart, CountersEnd);
382 LLVM_DEBUG(Die.dump(dbgs()));
383 }
384 return;
385 }
386 if (!FunctionPtr && (UnlimitedWarnings || ++NumSuppressedWarnings < 1)) {
387 WithColor::warning() << format("Could not find address of function %s\n",
388 *FunctionName);
389 LLVM_DEBUG(Die.dump(dbgs()));
390 }
391 // In debug info correlation mode, the CounterPtr is an absolute address of
392 // the counter, but it's expected to be relative later when iterating Data.
393 IntPtrT CounterOffset = *CounterPtr - CountersStart;
394 if (Data) {
396 P.FunctionName = *FunctionName;
397 if (auto Name = FnDie.getName(DINameKind::LinkageName))
398 P.LinkageName = Name;
399 P.CFGHash = *CFGHash;
400 P.CounterOffset = CounterOffset;
401 P.NumCounters = *NumCounters;
402 auto FilePath = FnDie.getDeclFile(
403 DILineInfoSpecifier::FileLineInfoKind::RelativeFilePath);
404 if (!FilePath.empty())
405 P.FilePath = FilePath;
406 if (auto LineNumber = FnDie.getDeclLine())
407 P.LineNumber = LineNumber;
408 Data->Probes.push_back(P);
409 } else {
410 this->addDataProbe(IndexedInstrProf::ComputeHash(*FunctionName), *CFGHash,
411 CounterOffset, FunctionPtr.value_or(0), *NumCounters);
412 this->NamesVec.push_back(*FunctionName);
413 }
414 };
415 for (auto &CU : DICtx->normal_units())
416 for (const auto &Entry : CU->dies())
417 maybeAddProbe(DWARFDie(CU.get(), &Entry));
418 for (auto &CU : DICtx->dwo_units())
419 for (const auto &Entry : CU->dies())
420 maybeAddProbe(DWARFDie(CU.get(), &Entry));
421
422 if (!UnlimitedWarnings && NumSuppressedWarnings > 0)
423 WithColor::warning() << format("Suppressed %d additional warnings\n",
424 NumSuppressedWarnings);
425}
426
427template <class IntPtrT>
429 if (this->NamesVec.empty()) {
430 return make_error<InstrProfError>(
431 instrprof_error::unable_to_correlate_profile,
432 "could not find any profile name metadata in debug info");
433 }
434 auto Result =
435 collectGlobalObjectNameStrings(this->NamesVec,
436 /*doCompression=*/false, this->Names);
437 return Result;
438}
439
440template <class IntPtrT>
442 int MaxWarnings, InstrProfCorrelator::CorrelationData *CorrelateData) {
443 using RawProfData = RawInstrProf::ProfileData<IntPtrT>;
444 bool UnlimitedWarnings = (MaxWarnings == 0);
445 // -N suppressed warnings means we can emit up to N (unsuppressed) warnings
446 int NumSuppressedWarnings = -MaxWarnings;
447
448 const RawProfData *DataStart = (const RawProfData *)this->Ctx->DataStart;
449 const RawProfData *DataEnd = (const RawProfData *)this->Ctx->DataEnd;
450 // We need to use < here because the last data record may have no padding.
451 for (const RawProfData *I = DataStart; I < DataEnd; ++I) {
452 uint64_t CounterPtr = this->template maybeSwap<IntPtrT>(I->CounterPtr);
453 uint64_t CountersStart = this->Ctx->CountersSectionStart;
454 uint64_t CountersEnd = this->Ctx->CountersSectionEnd;
455 if (CounterPtr < CountersStart || CounterPtr >= CountersEnd) {
456 if (UnlimitedWarnings || ++NumSuppressedWarnings < 1) {
458 << format("CounterPtr out of range for function: Actual=0x%x "
459 "Expected=[0x%x, 0x%x) at data offset=0x%x\n",
460 CounterPtr, CountersStart, CountersEnd,
461 (I - DataStart) * sizeof(RawProfData));
462 }
463 }
464 // In binary correlation mode, the CounterPtr is an absolute address of the
465 // counter, but it's expected to be relative later when iterating Data.
466 IntPtrT CounterOffset = CounterPtr - CountersStart;
467 this->addDataProbe(I->NameRef, I->FuncHash, CounterOffset,
468 I->FunctionPointer, I->NumCounters);
469 }
470}
471
472template <class IntPtrT>
474 if (this->Ctx->NameSize == 0) {
475 return make_error<InstrProfError>(
476 instrprof_error::unable_to_correlate_profile,
477 "could not find any profile data metadata in object file");
478 }
479 this->Names.append(this->Ctx->NameStart, this->Ctx->NameSize);
480 return Error::success();
481}
#define LLVM_DEBUG(X)
Definition: Debug.h:101
std::string Name
Expected< object::SectionRef > getInstrProfSection(const object::ObjectFile &Obj, InstrProfSectKind IPSK)
Get profile section.
#define I(x, y, z)
Definition: MD5.cpp:58
#define P(N)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
static MemoryLocation getLocation(Instruction *I)
raw_pwrite_stream & OS
BinaryInstrProfCorrelator - A child of InstrProfCorrelatorImpl that takes an object file as input to ...
static std::unique_ptr< DWARFContext > create(const object::ObjectFile &Obj, ProcessDebugRelocations RelocAction=ProcessDebugRelocations::Process, const LoadedObjectInfo *L=nullptr, std::string DWPName="", std::function< void(Error)> RecoverableErrorHandler=WithColor::defaultErrorHandler, std::function< void(Error)> WarningHandler=WithColor::defaultWarningHandler, bool ThreadSafe=false)
Utility class that carries the DWARF compile/type unit and the debug info entry in an object.
Definition: DWARFDie.h:42
iterator_range< iterator > children() const
Definition: DWARFDie.h:395
DWARFDie getParent() const
Get the parent of this DIE object.
Definition: DWARFDie.cpp:637
DWARFUnit * getDwarfUnit() const
Definition: DWARFDie.h:53
bool hasChildren() const
Definition: DWARFDie.h:78
const char * getName(DINameKind Kind) const
Return the DIE name resolving DW_AT_specification or DW_AT_abstract_origin references if necessary.
Definition: DWARFDie.cpp:445
dwarf::Tag getTag() const
Definition: DWARFDie.h:71
Expected< DWARFLocationExpressionsVector > getLocations(dwarf::Attribute Attr) const
Definition: DWARFDie.cpp:409
bool isNULL() const
Returns true for a valid DIE that terminates a sibling chain.
Definition: DWARFDie.h:84
bool isValid() const
Definition: DWARFDie.h:50
void dump(raw_ostream &OS, unsigned indent=0, DIDumpOptions DumpOpts=DIDumpOptions()) const
Dump the DIE and all of its attributes to the supplied stream.
Definition: DWARFDie.cpp:577
This class represents an Operation in the Expression.
uint64_t getRawOperand(unsigned Idx) const
uint8_t getAddressByteSize() const
Definition: DWARFUnit.h:326
DwarfInstrProfCorrelator - A child of InstrProfCorrelatorImpl that takes DWARF debug info as input to...
Lightweight error class with error context and mandatory checking.
Definition: Error.h:160
static ErrorSuccess success()
Create a success value.
Definition: Error.h:337
Tagged union holding either a T or a Error.
Definition: Error.h:481
InstrProfCorrelatorImpl - A child of InstrProfCorrelator with a template pointer type so that the Pro...
static llvm::Expected< std::unique_ptr< InstrProfCorrelatorImpl< IntPtrT > > > get(std::unique_ptr< InstrProfCorrelator::Context > Ctx, const object::ObjectFile &Obj, ProfCorrelatorKind FileKind)
Error correlateProfileData(int MaxWarnings) override
Construct a ProfileData vector used to correlate raw instrumentation data to their functions.
static bool classof(const InstrProfCorrelator *C)
InstrProfCorrelatorImpl(std::unique_ptr< InstrProfCorrelator::Context > Ctx)
void addDataProbe(uint64_t FunctionName, uint64_t CFGHash, IntPtrT CounterOffset, IntPtrT FunctionPtr, uint32_t NumCounters)
Error dumpYaml(int MaxWarnings, raw_ostream &OS) override
Process debug info and dump the correlation data.
InstrProfCorrelator - A base class used to create raw instrumentation data to their functions.
static const char * FunctionNameAttributeName
static const char * CFGHashAttributeName
static llvm::Expected< std::unique_ptr< InstrProfCorrelator > > get(StringRef Filename, ProfCorrelatorKind FileKind)
static const char * NumCountersAttributeName
ProfCorrelatorKind
Indicate if we should use the debug info or profile metadata sections to correlate.
std::optional< size_t > getDataSize() const
Return the number of ProfileData elements.
static ErrorOr< std::unique_ptr< MemoryBuffer > > getFile(const Twine &Filename, bool IsText=false, bool RequiresNullTerminator=true, bool IsVolatile=false, std::optional< Align > Alignment=std::nullopt)
Open the specified file as a MemoryBuffer, returning a new MemoryBuffer if successful,...
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
bool starts_with(StringRef Prefix) const
Check if this string starts with the given Prefix.
Definition: StringRef.h:258
ObjectFormatType
Definition: Triple.h:297
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:81
static raw_ostream & warning()
Convenience method for printing "warning: " to stderr.
Definition: WithColor.cpp:85
Triple::ObjectFormatType getTripleObjectFormat() const
Definition: Binary.h:163
bool isLittleEndian() const
Definition: Binary.h:155
bool isMachO() const
Definition: Binary.h:127
bool isCOFF() const
Definition: Binary.h:131
bool isELF() const
Definition: Binary.h:123
static Expected< std::vector< std::string > > findDsymObjectMembers(StringRef Path)
If the input path is a .dSYM bundle (as created by the dsymutil tool), return the paths to the object...
This class is the base class for all object file types.
Definition: ObjectFile.h:229
section_iterator_range sections() const
Definition: ObjectFile.h:329
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
uint64_t ComputeHash(StringRef K)
Definition: InstrProf.h:1172
std::optional< uint64_t > toAddress(const std::optional< DWARFFormValue > &V)
Take an optional DWARFFormValue and try to extract an address.
Expected< std::unique_ptr< Binary > > createBinary(MemoryBufferRef Source, LLVMContext *Context=nullptr, bool InitContent=true)
Create a Binary from Source, autodetecting the file type.
Definition: Binary.cpp:45
static const bool IsLittleEndianHost
Definition: SwapByteOrder.h:29
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
decltype(auto) dyn_cast(const From &Val)
dyn_cast<X> - Return the argument parameter cast to the specified type.
Definition: Casting.h:649
std::string getInstrProfSectionName(InstrProfSectKind IPSK, Triple::ObjectFormatType OF, bool AddSegmentInfo=true)
Return the name of the profile section corresponding to IPSK.
Definition: InstrProf.cpp:231
InstrProfSectKind
Definition: InstrProf.h:60
StringRef getInstrProfCountersVarPrefix()
Return the name prefix of profile counter variables.
Definition: InstrProf.h:101
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:163
format_object< Ts... > format(const char *Fmt, const Ts &... Vals)
These are helper functions used to produce formatted output.
Definition: Format.h:125
Expected< T > errorOrToExpected(ErrorOr< T > &&EO)
Convert an ErrorOr<T> to an Expected<T>.
Definition: Error.h:1226
Error collectGlobalObjectNameStrings(ArrayRef< std::string > NameStrs, bool doCompression, std::string &Result)
Given a vector of strings (names of global objects like functions or, virtual tables) NameStrs,...
Definition: InstrProf.cpp:658
OutputIt move(R &&Range, OutputIt Out)
Provide wrappers to std::move which take ranges instead of having to pass begin/end explicitly.
Definition: STLExtras.h:1849
void consumeError(Error Err)
Consume a Error without doing anything.
Definition: Error.h:1069
Implement std::hash so that hash_code can be used in STL containers.
Definition: BitVector.h:858
#define N
std::unique_ptr< MemoryBuffer > Buffer
static llvm::Expected< std::unique_ptr< Context > > get(std::unique_ptr< MemoryBuffer > Buffer, const object::ObjectFile &Obj, ProfCorrelatorKind FileKind)
static void mapping(yaml::IO &io, InstrProfCorrelator::CorrelationData &Data)
static void mapping(yaml::IO &io, InstrProfCorrelator::Probe &P)