LLVM  13.0.0git
SampleProf.cpp
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1 //=-- SampleProf.cpp - Sample profiling format support --------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file contains common definitions used in the reading and writing of
10 // sample profile data.
11 //
12 //===----------------------------------------------------------------------===//
13 
15 #include "llvm/Config/llvm-config.h"
17 #include "llvm/IR/PseudoProbe.h"
20 #include "llvm/Support/Compiler.h"
21 #include "llvm/Support/Debug.h"
22 #include "llvm/Support/Error.h"
24 #include "llvm/Support/LEB128.h"
27 #include <string>
28 #include <system_error>
29 
30 using namespace llvm;
31 using namespace sampleprof;
32 
34  "profile-symbol-list-cutoff", cl::Hidden, cl::init(-1), cl::ZeroOrMore,
35  cl::desc("Cutoff value about how many symbols in profile symbol list "
36  "will be used. This is very useful for performance debugging"));
37 
38 namespace llvm {
39 namespace sampleprof {
42 bool FunctionSamples::ProfileIsCS = false;
43 bool FunctionSamples::UseMD5 = false;
45 bool FunctionSamples::ProfileIsFS = false;
46 } // namespace sampleprof
47 } // namespace llvm
48 
49 namespace {
50 
51 // FIXME: This class is only here to support the transition to llvm::Error. It
52 // will be removed once this transition is complete. Clients should prefer to
53 // deal with the Error value directly, rather than converting to error_code.
54 class SampleProfErrorCategoryType : public std::error_category {
55  const char *name() const noexcept override { return "llvm.sampleprof"; }
56 
57  std::string message(int IE) const override {
58  sampleprof_error E = static_cast<sampleprof_error>(IE);
59  switch (E) {
61  return "Success";
63  return "Invalid sample profile data (bad magic)";
65  return "Unsupported sample profile format version";
67  return "Too much profile data";
69  return "Truncated profile data";
71  return "Malformed sample profile data";
73  return "Unrecognized sample profile encoding format";
75  return "Profile encoding format unsupported for writing operations";
77  return "Truncated function name table";
79  return "Unimplemented feature";
81  return "Counter overflow";
83  return "Ostream does not support seek";
85  return "Compress failure";
87  return "Uncompress failure";
89  return "Zlib is unavailable";
91  return "Function hash mismatch";
92  }
93  llvm_unreachable("A value of sampleprof_error has no message.");
94  }
95 };
96 
97 } // end anonymous namespace
98 
100 
102  return *ErrorCategory;
103 }
104 
106  OS << LineOffset;
107  if (Discriminator > 0)
108  OS << "." << Discriminator;
109 }
110 
112  const LineLocation &Loc) {
113  Loc.print(OS);
114  return OS;
115 }
116 
117 /// Merge the samples in \p Other into this record.
118 /// Optionally scale sample counts by \p Weight.
120  uint64_t Weight) {
121  sampleprof_error Result;
122  // With pseudo probes, merge a dangling sample with a non-dangling sample
123  // should result in a dangling sample.
126  Other.getSamples() == FunctionSamples::InvalidProbeCount)) {
128  Result = sampleprof_error::success;
129  } else {
130  Result = addSamples(Other.getSamples(), Weight);
131  }
132  for (const auto &I : Other.getCallTargets()) {
133  MergeResult(Result, addCalledTarget(I.first(), I.second, Weight));
134  }
135  return Result;
136 }
137 
138 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
140 #endif
141 
142 /// Print the sample record to the stream \p OS indented by \p Indent.
143 void SampleRecord::print(raw_ostream &OS, unsigned Indent) const {
144  OS << NumSamples;
145  if (hasCalls()) {
146  OS << ", calls:";
147  for (const auto &I : getSortedCallTargets())
148  OS << " " << I.first << ":" << I.second;
149  }
150  OS << "\n";
151 }
152 
153 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
155 #endif
156 
158  const SampleRecord &Sample) {
159  Sample.print(OS, 0);
160  return OS;
161 }
162 
163 /// Print the samples collected for a function on stream \p OS.
164 void FunctionSamples::print(raw_ostream &OS, unsigned Indent) const {
165  if (getFunctionHash())
166  OS << "CFG checksum " << getFunctionHash() << "\n";
167 
168  OS << TotalSamples << ", " << TotalHeadSamples << ", " << BodySamples.size()
169  << " sampled lines\n";
170 
171  OS.indent(Indent);
172  if (!BodySamples.empty()) {
173  OS << "Samples collected in the function's body {\n";
174  SampleSorter<LineLocation, SampleRecord> SortedBodySamples(BodySamples);
175  for (const auto &SI : SortedBodySamples.get()) {
176  OS.indent(Indent + 2);
177  OS << SI->first << ": " << SI->second;
178  }
179  OS.indent(Indent);
180  OS << "}\n";
181  } else {
182  OS << "No samples collected in the function's body\n";
183  }
184 
185  OS.indent(Indent);
186  if (!CallsiteSamples.empty()) {
187  OS << "Samples collected in inlined callsites {\n";
189  CallsiteSamples);
190  for (const auto &CS : SortedCallsiteSamples.get()) {
191  for (const auto &FS : CS->second) {
192  OS.indent(Indent + 2);
193  OS << CS->first << ": inlined callee: " << FS.second.getName() << ": ";
194  FS.second.print(OS, Indent + 4);
195  }
196  }
197  OS.indent(Indent);
198  OS << "}\n";
199  } else {
200  OS << "No inlined callsites in this function\n";
201  }
202 }
203 
205  const FunctionSamples &FS) {
206  FS.print(OS);
207  return OS;
208 }
209 
211  return (DIL->getLine() - DIL->getScope()->getSubprogram()->getLine()) &
212  0xffff;
213 }
214 
217  // In a pseudo-probe based profile, a callsite is simply represented by the
218  // ID of the probe associated with the call instruction. The probe ID is
219  // encoded in the Discriminator field of the call instruction's debug
220  // metadata.
222  DIL->getDiscriminator()),
223  0);
224  else
226  DIL->getBaseDiscriminator());
227 }
228 
230  const DILocation *DIL, SampleProfileReaderItaniumRemapper *Remapper) const {
231  assert(DIL);
233 
234  const DILocation *PrevDIL = DIL;
235  for (DIL = DIL->getInlinedAt(); DIL; DIL = DIL->getInlinedAt()) {
236  unsigned Discriminator;
237  if (ProfileIsFS)
238  Discriminator = DIL->getDiscriminator();
239  else
240  Discriminator = DIL->getBaseDiscriminator();
241 
242  S.push_back(
243  std::make_pair(LineLocation(getOffset(DIL), Discriminator),
244  PrevDIL->getScope()->getSubprogram()->getLinkageName()));
245  PrevDIL = DIL;
246  }
247  if (S.size() == 0)
248  return this;
249  const FunctionSamples *FS = this;
250  for (int i = S.size() - 1; i >= 0 && FS != nullptr; i--) {
251  FS = FS->findFunctionSamplesAt(S[i].first, S[i].second, Remapper);
252  }
253  return FS;
254 }
255 
257  NameSet.insert(Name);
258  for (const auto &BS : BodySamples)
259  for (const auto &TS : BS.second.getCallTargets())
260  NameSet.insert(TS.getKey());
261 
262  for (const auto &CS : CallsiteSamples) {
263  for (const auto &NameFS : CS.second) {
264  NameSet.insert(NameFS.first);
265  NameFS.second.findAllNames(NameSet);
266  }
267  }
268 }
269 
271  const LineLocation &Loc, StringRef CalleeName,
272  SampleProfileReaderItaniumRemapper *Remapper) const {
273  CalleeName = getCanonicalFnName(CalleeName);
274 
275  std::string CalleeGUID;
276  CalleeName = getRepInFormat(CalleeName, UseMD5, CalleeGUID);
277 
278  auto iter = CallsiteSamples.find(Loc);
279  if (iter == CallsiteSamples.end())
280  return nullptr;
281  auto FS = iter->second.find(CalleeName);
282  if (FS != iter->second.end())
283  return &FS->second;
284  if (Remapper) {
285  if (auto NameInProfile = Remapper->lookUpNameInProfile(CalleeName)) {
286  auto FS = iter->second.find(*NameInProfile);
287  if (FS != iter->second.end())
288  return &FS->second;
289  }
290  }
291  // If we cannot find exact match of the callee name, return the FS with
292  // the max total count. Only do this when CalleeName is not provided,
293  // i.e., only for indirect calls.
294  if (!CalleeName.empty())
295  return nullptr;
296  uint64_t MaxTotalSamples = 0;
297  const FunctionSamples *R = nullptr;
298  for (const auto &NameFS : iter->second)
299  if (NameFS.second.getTotalSamples() >= MaxTotalSamples) {
300  MaxTotalSamples = NameFS.second.getTotalSamples();
301  R = &NameFS.second;
302  }
303  return R;
304 }
305 
306 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
308 #endif
309 
310 std::error_code ProfileSymbolList::read(const uint8_t *Data,
311  uint64_t ListSize) {
312  const char *ListStart = reinterpret_cast<const char *>(Data);
313  uint64_t Size = 0;
314  uint64_t StrNum = 0;
315  while (Size < ListSize && StrNum < ProfileSymbolListCutOff) {
316  StringRef Str(ListStart + Size);
317  add(Str);
318  Size += Str.size() + 1;
319  StrNum++;
320  }
321  if (Size != ListSize && StrNum != ProfileSymbolListCutOff)
324 }
325 
327  uint64_t ColdCountThreshold, bool TrimColdContext, bool MergeColdContext) {
328  if (!TrimColdContext && !MergeColdContext)
329  return;
330 
331  // Nothing to merge if sample threshold is zero
332  if (ColdCountThreshold == 0)
333  return;
334 
335  // Filter the cold profiles from ProfileMap and move them into a tmp
336  // container
337  std::vector<std::pair<StringRef, const FunctionSamples *>> ColdProfiles;
338  for (const auto &I : ProfileMap) {
339  const FunctionSamples &FunctionProfile = I.second;
340  if (FunctionProfile.getTotalSamples() >= ColdCountThreshold)
341  continue;
342  ColdProfiles.emplace_back(I.getKey(), &I.second);
343  }
344 
345  // Remove the cold profile from ProfileMap and merge them into BaseProileMap
346  StringMap<FunctionSamples> BaseProfileMap;
347  for (const auto &I : ColdProfiles) {
348  if (MergeColdContext) {
349  auto Ret = BaseProfileMap.try_emplace(
350  I.second->getContext().getNameWithoutContext(), FunctionSamples());
351  FunctionSamples &BaseProfile = Ret.first->second;
352  BaseProfile.merge(*I.second);
353  }
354  ProfileMap.erase(I.first);
355  }
356 
357  // Merge the base profiles into ProfileMap;
358  for (const auto &I : BaseProfileMap) {
359  // Filter the cold base profile
360  if (TrimColdContext && I.second.getTotalSamples() < ColdCountThreshold &&
361  ProfileMap.find(I.getKey()) == ProfileMap.end())
362  continue;
363  // Merge the profile if the original profile exists, otherwise just insert
364  // as a new profile
365  auto Ret = ProfileMap.try_emplace(I.getKey(), FunctionSamples());
366  if (Ret.second) {
367  SampleContext FContext(Ret.first->first(), RawContext);
368  FunctionSamples &FProfile = Ret.first->second;
369  FProfile.setContext(FContext);
370  FProfile.setName(FContext.getNameWithoutContext());
371  }
372  FunctionSamples &OrigProfile = Ret.first->second;
373  OrigProfile.merge(I.second);
374  }
375 }
376 
378  StringSet<> ProfilesToBeRemoved;
379  // Note that StringMap order is guaranteed to be top-down order,
380  // this makes sure we make room for promoted/merged context in the
381  // map, before we move profiles in the map.
382  for (auto &I : ProfileMap) {
383  FunctionSamples &FProfile = I.second;
384  StringRef ContextStr = FProfile.getNameWithContext();
385  if (I.first() == ContextStr)
386  continue;
387 
388  // Use the context string from FunctionSamples to update the keys of
389  // ProfileMap. They can get out of sync after context profile promotion
390  // through pre-inliner.
391  auto Ret = ProfileMap.try_emplace(ContextStr, FProfile);
392  assert(Ret.second && "Conext conflict during canonicalization");
393  FProfile = Ret.first->second;
394 
395  // Track the context profile to remove
396  ProfilesToBeRemoved.erase(ContextStr);
397  ProfilesToBeRemoved.insert(I.first());
398  }
399 
400  for (auto &I : ProfilesToBeRemoved) {
401  ProfileMap.erase(I.first());
402  }
403 }
404 
405 std::error_code ProfileSymbolList::write(raw_ostream &OS) {
406  // Sort the symbols before output. If doing compression.
407  // It will make the compression much more effective.
408  std::vector<StringRef> SortedList(Syms.begin(), Syms.end());
409  llvm::sort(SortedList);
410 
411  std::string OutputString;
412  for (auto &Sym : SortedList) {
413  OutputString.append(Sym.str());
414  OutputString.append(1, '\0');
415  }
416 
417  OS << OutputString;
419 }
420 
422  OS << "======== Dump profile symbol list ========\n";
423  std::vector<StringRef> SortedList(Syms.begin(), Syms.end());
424  llvm::sort(SortedList);
425 
426  for (auto &Sym : SortedList)
427  OS << Sym << "\n";
428 }
llvm::Check::Size
@ Size
Definition: FileCheck.h:73
i
i
Definition: README.txt:29
llvm::sampleprof::SampleRecord::getSamples
uint64_t getSamples() const
Definition: SampleProf.h:345
llvm::sampleprof_error::uncompress_failed
@ uncompress_failed
LLVM_DUMP_METHOD
#define LLVM_DUMP_METHOD
Mark debug helper function definitions like dump() that should not be stripped from debug builds.
Definition: Compiler.h:499
llvm
Definition: AllocatorList.h:23
llvm::sampleprof::SampleSorter::get
const SamplesWithLocList & get() const
Definition: SampleProf.h:981
llvm::StringRef::empty
LLVM_NODISCARD bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:153
llvm::sampleprof::FunctionSamples::ProfileIsProbeBased
static bool ProfileIsProbeBased
Definition: SampleProf.h:881
llvm::sampleprof::FunctionSamples::dump
void dump() const
Definition: SampleProf.cpp:307
llvm::sampleprof::FunctionSamples::ProfileIsCS
static bool ProfileIsCS
Definition: SampleProf.h:883
llvm::sampleprof::RawContext
@ RawContext
Definition: SampleProf.h:386
DebugInfoMetadata.h
llvm::sampleprof::LineLocation::dump
void dump() const
Definition: SampleProf.cpp:139
ErrorCategory
static ManagedStatic< SampleProfErrorCategoryType > ErrorCategory
Definition: SampleProf.cpp:99
llvm::sampleprof::SampleRecord::hasCalls
bool hasCalls() const
Return true if this sample record contains function calls.
Definition: SampleProf.h:343
llvm::sampleprof_error::hash_mismatch
@ hash_mismatch
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1167
ErrorHandling.h
ManagedStatic.h
Error.h
llvm::sampleprof_error::unsupported_version
@ unsupported_version
llvm::cl::Hidden
@ Hidden
Definition: CommandLine.h:143
llvm::sampleprof::SampleContext::getNameWithoutContext
StringRef getNameWithoutContext() const
Definition: SampleProf.h:466
llvm::DILocation
Debug location.
Definition: DebugInfoMetadata.h:1562
llvm::sampleprof_error::not_implemented
@ not_implemented
llvm::StringSet::insert
std::pair< typename Base::iterator, bool > insert(StringRef key)
Definition: StringSet.h:33
llvm::MipsISD::Ret
@ Ret
Definition: MipsISelLowering.h:116
llvm::sampleprof::FunctionSamples::findAllNames
void findAllNames(DenseSet< StringRef > &NameSet) const
Definition: SampleProf.cpp:256
llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, DenseMapInfo< ValueT >, detail::DenseSetPair< ValueT > >, DenseMapInfo< ValueT > >::insert
std::pair< iterator, bool > insert(const ValueT &V)
Definition: DenseSet.h:206
llvm::Data
@ Data
Definition: SIMachineScheduler.h:56
llvm::sampleprof::LineLocation::Discriminator
uint32_t Discriminator
Definition: SampleProf.h:284
llvm::sampleprof_error::counter_overflow
@ counter_overflow
llvm::sampleprof::LineLocation::LineOffset
uint32_t LineOffset
Definition: SampleProf.h:283
llvm::dbgs
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
Definition: Debug.cpp:132
llvm::sampleprof::FunctionSamples::HasUniqSuffix
static bool HasUniqSuffix
Whether the profile contains any ".__uniq." suffix in a name.
Definition: SampleProf.h:895
CommandLine.h
llvm::sampleprof_error::unsupported_writing_format
@ unsupported_writing_format
llvm::sampleprof::SampleProfileFormat
SampleProfileFormat
Definition: SampleProf.h:87
llvm::sampleprof::getRepInFormat
static StringRef getRepInFormat(StringRef Name, bool UseMD5, std::string &GUIDBuf)
Get the proper representation of a string according to whether the current Format uses MD5 to represe...
Definition: SampleProf.h:105
llvm::sampleprof::FunctionSamples::getTotalSamples
uint64_t getTotalSamples() const
Return the total number of samples collected inside the function.
Definition: SampleProf.h:650
E
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
llvm::ManagedStatic
ManagedStatic - This transparently changes the behavior of global statics to be lazily constructed on...
Definition: ManagedStatic.h:83
SampleProf.h
llvm::sampleprof::SampleProfileReaderItaniumRemapper::lookUpNameInProfile
Optional< StringRef > lookUpNameInProfile(StringRef FunctionName)
Return the equivalent name in the profile for FunctionName if it exists.
Definition: SampleProfReader.cpp:1594
llvm::sampleprof_category
const std::error_category & sampleprof_category()
Definition: SampleProf.cpp:101
llvm::sampleprof::FunctionSamples::Format
static SampleProfileFormat Format
Definition: SampleProf.h:889
ColdCountThreshold
static cl::opt< unsigned > ColdCountThreshold("mfs-count-threshold", cl::desc("Minimum number of times a block must be executed to be retained."), cl::init(1), cl::Hidden)
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:50
llvm::sampleprof::ProfileSymbolList::read
std::error_code read(const uint8_t *Data, uint64_t ListSize)
Definition: SampleProf.cpp:310
llvm::sampleprof::SampleContext
Definition: SampleProf.h:408
llvm::StringMap
StringMap - This is an unconventional map that is specialized for handling keys that are "strings",...
Definition: StringMap.h:108
llvm::sampleprof::FunctionSamples::ProfileIsFS
static bool ProfileIsFS
If this profile uses flow sensitive discriminators.
Definition: SampleProf.h:898
llvm::ARM_PROC::IE
@ IE
Definition: ARMBaseInfo.h:27
llvm::cl::ZeroOrMore
@ ZeroOrMore
Definition: CommandLine.h:120
llvm::DenseSet
Implements a dense probed hash-table based set.
Definition: DenseSet.h:268
llvm::cl::opt
Definition: CommandLine.h:1422
llvm::StringMap< NoneType, MallocAllocator >::erase
void erase(iterator I)
Definition: StringMap.h:355
const
aarch64 promote const
Definition: AArch64PromoteConstant.cpp:232
llvm::sampleprof::FunctionSamples
Representation of the samples collected for a function.
Definition: SampleProf.h:533
LEB128.h
I
#define I(x, y, z)
Definition: MD5.cpp:59
SampleProfReader.h
llvm::cl::init
initializer< Ty > init(const Ty &Val)
Definition: CommandLine.h:443
llvm::sampleprof::FunctionSamples::setContext
void setContext(const SampleContext &FContext)
Definition: SampleProf.h:887
llvm::sampleprof::FunctionSamples::getFunctionHash
uint64_t getFunctionHash() const
Definition: SampleProf.h:789
llvm::sampleprof::SampleContextTrimmer::trimAndMergeColdContextProfiles
void trimAndMergeColdContextProfiles(uint64_t ColdCountThreshold, bool TrimColdContext=true, bool MergeColdContext=true)
Definition: SampleProf.cpp:326
llvm::sampleprof::SampleRecord::getSortedCallTargets
const SortedCallTargetSet getSortedCallTargets() const
Definition: SampleProf.h:347
llvm::sampleprof_error::malformed
@ malformed
message
message(STATUS "Targeting ${t}") add_subdirectory($
Definition: CMakeLists.txt:31
llvm::sampleprof::FunctionSamples::getCallSiteIdentifier
static LineLocation getCallSiteIdentifier(const DILocation *DIL)
Returns a unique call site identifier for a given debug location of a call instruction.
Definition: SampleProf.cpp:215
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
SI
StandardInstrumentations SI(Debug, VerifyEach)
llvm::sampleprof::operator<<
raw_ostream & operator<<(raw_ostream &OS, const LineLocation &Loc)
Definition: SampleProf.cpp:111
llvm::sampleprof::FunctionSamples::UseMD5
static bool UseMD5
Whether the profile uses MD5 to represent string.
Definition: SampleProf.h:892
llvm::PseudoProbeDwarfDiscriminator::extractProbeIndex
static uint32_t extractProbeIndex(uint32_t Value)
Definition: PseudoProbe.h:59
llvm::sampleprof::FunctionSamples::getOffset
static unsigned getOffset(const DILocation *DIL)
Returns the line offset to the start line of the subprogram.
Definition: SampleProf.cpp:210
llvm::sampleprof::LineLocation
Represents the relative location of an instruction.
Definition: SampleProf.h:264
llvm::StringSet
StringSet - A wrapper for StringMap that provides set-like functionality.
Definition: StringSet.h:22
llvm::MergeResult
sampleprof_error MergeResult(sampleprof_error &Accumulator, sampleprof_error Result)
Definition: SampleProf.h:65
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:58
llvm::sampleprof::SampleSorter
Sort a LocationT->SampleT map by LocationT.
Definition: SampleProf.h:968
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:136
llvm::sampleprof_error::unrecognized_format
@ unrecognized_format
Compiler.h
llvm::sampleprof::ProfileSymbolList::add
void add(StringRef Name, bool copy=false)
copy indicates whether we need to copy the underlying memory for the input Name.
Definition: SampleProf.h:1013
llvm::sampleprof::FunctionSamples::print
void print(raw_ostream &OS=dbgs(), unsigned Indent=0) const
Print the samples collected for a function on stream OS.
Definition: SampleProf.cpp:164
S
add sub stmia L5 ldr r0 bl L_printf $stub Instead of a and a wouldn t it be better to do three moves *Return an aggregate type is even return S
Definition: README.txt:210
llvm::sampleprof::FunctionSamples::findFunctionSamplesAt
const FunctionSamples * findFunctionSamplesAt(const LineLocation &Loc, StringRef CalleeName, SampleProfileReaderItaniumRemapper *Remapper) const
Returns a pointer to FunctionSamples at the given callsite location Loc with callee CalleeName.
Definition: SampleProf.cpp:270
llvm::sampleprof_error::ostream_seek_unsupported
@ ostream_seek_unsupported
name
static const char * name
Definition: SVEIntrinsicOpts.cpp:84
llvm::sampleprof::ProfileSymbolList::write
std::error_code write(raw_ostream &OS)
Definition: SampleProf.cpp:405
llvm::sampleprof::LineLocation::print
void print(raw_ostream &OS) const
Definition: SampleProf.cpp:105
llvm::sampleprof::SampleRecord::print
void print(raw_ostream &OS, unsigned Indent) const
Print the sample record to the stream OS indented by Indent.
Definition: SampleProf.cpp:143
llvm::sort
void sort(IteratorTy Start, IteratorTy End)
Definition: STLExtras.h:1423
llvm::sampleprof::SampleRecord
Representation of a single sample record.
Definition: SampleProf.h:299
llvm::sampleprof_error::compress_failed
@ compress_failed
PseudoProbe.h
llvm::sampleprof_error
sampleprof_error
Definition: SampleProf.h:42
llvm::sampleprof::FunctionSamples::merge
sampleprof_error merge(const FunctionSamples &Other, uint64_t Weight=1)
Merge the samples in Other into this one.
Definition: SampleProf.h:706
llvm::sampleprof_error::zlib_unavailable
@ zlib_unavailable
llvm::sampleprof_error::too_large
@ too_large
llvm::sampleprof::SampleRecord::addCalledTarget
sampleprof_error addCalledTarget(StringRef F, uint64_t S, uint64_t Weight=1)
Add called function F with samples S.
Definition: SampleProf.h:332
llvm::sampleprof_error::success
@ success
llvm::sampleprof::FunctionSamples::getCanonicalFnName
static StringRef getCanonicalFnName(const Function &F)
Return the canonical name for a function, taking into account suffix elision policy attributes.
Definition: SampleProf.h:793
llvm::DILocation::getBaseDiscriminator
unsigned getBaseDiscriminator() const
Returns the base discriminator stored in the discriminator.
Definition: DebugInfoMetadata.h:2200
llvm::sampleprof::SampleContextTrimmer::canonicalizeContextProfiles
void canonicalizeContextProfiles()
Definition: SampleProf.cpp:377
llvm::sampleprof::SampleRecord::dump
void dump() const
Definition: SampleProf.cpp:154
llvm::raw_ostream::indent
raw_ostream & indent(unsigned NumSpaces)
indent - Insert 'NumSpaces' spaces.
Definition: raw_ostream.cpp:497
llvm::sampleprof::SampleRecord::merge
sampleprof_error merge(const SampleRecord &Other, uint64_t Weight=1)
Merge the samples in Other into this record.
Definition: SampleProf.cpp:119
llvm::sampleprof::FunctionSamples::InvalidProbeCount
static constexpr uint64_t InvalidProbeCount
Definition: SampleProf.h:879
llvm::X86AS::FS
@ FS
Definition: X86.h:188
llvm::sampleprof::SampleProfileReaderItaniumRemapper
SampleProfileReaderItaniumRemapper remaps the profile data from a sample profile data reader,...
Definition: SampleProfReader.h:262
llvm::sampleprof_error::truncated_name_table
@ truncated_name_table
llvm::sampleprof::ProfileSymbolList::dump
void dump(raw_ostream &OS=dbgs()) const
Definition: SampleProf.cpp:421
ProfileSymbolListCutOff
static cl::opt< uint64_t > ProfileSymbolListCutOff("profile-symbol-list-cutoff", cl::Hidden, cl::init(-1), cl::ZeroOrMore, cl::desc("Cutoff value about how many symbols in profile symbol list " "will be used. This is very useful for performance debugging"))
llvm::sampleprof::FunctionSamples::getNameWithContext
StringRef getNameWithContext() const
Return function name with context.
Definition: SampleProf.h:780
llvm::cl::desc
Definition: CommandLine.h:414
raw_ostream.h
error_category
static ManagedStatic< _object_error_category > error_category
Definition: Error.cpp:76
llvm::sampleprof_error::truncated
@ truncated
Debug.h
llvm::sampleprof::SampleRecord::addSamples
sampleprof_error addSamples(uint64_t S, uint64_t Weight=1)
Increment the number of samples for this record by S.
Definition: SampleProf.h:320
llvm::StringMap::try_emplace
std::pair< iterator, bool > try_emplace(StringRef Key, ArgsTy &&... Args)
Emplace a new element for the specified key into the map if the key isn't already in the map.
Definition: StringMap.h:315
llvm::sampleprof_error::bad_magic
@ bad_magic
Other
Optional< std::vector< StOtherPiece > > Other
Definition: ELFYAML.cpp:1169
llvm::sampleprof::FunctionSamples::findFunctionSamples
const FunctionSamples * findFunctionSamples(const DILocation *DIL, SampleProfileReaderItaniumRemapper *Remapper=nullptr) const
Get the FunctionSamples of the inline instance where DIL originates from.
Definition: SampleProf.cpp:229
llvm::sampleprof::FunctionSamples::setName
void setName(StringRef FunctionName)
Set the name of the function.
Definition: SampleProf.h:774