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//=-- SampleProf.cpp - Sample profiling format support --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains common definitions used in the reading and writing of
// sample profile data.
//
//===----------------------------------------------------------------------===//
#include "llvm/ProfileData/SampleProf.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/raw_ostream.h"
#include <string>
#include <system_error>
using namespace llvm;
using namespace sampleprof;
namespace {
// FIXME: This class is only here to support the transition to llvm::Error. It
// will be removed once this transition is complete. Clients should prefer to
// deal with the Error value directly, rather than converting to error_code.
class SampleProfErrorCategoryType : public std::error_category {
const char *name() const noexcept override { return "llvm.sampleprof"; }
std::string message(int IE) const override {
sampleprof_error E = static_cast<sampleprof_error>(IE);
switch (E) {
case sampleprof_error::success:
return "Success";
case sampleprof_error::bad_magic:
return "Invalid sample profile data (bad magic)";
case sampleprof_error::unsupported_version:
return "Unsupported sample profile format version";
case sampleprof_error::too_large:
return "Too much profile data";
case sampleprof_error::truncated:
return "Truncated profile data";
case sampleprof_error::malformed:
return "Malformed sample profile data";
case sampleprof_error::unrecognized_format:
return "Unrecognized sample profile encoding format";
case sampleprof_error::unsupported_writing_format:
return "Profile encoding format unsupported for writing operations";
case sampleprof_error::truncated_name_table:
return "Truncated function name table";
case sampleprof_error::not_implemented:
return "Unimplemented feature";
case sampleprof_error::counter_overflow:
return "Counter overflow";
}
llvm_unreachable("A value of sampleprof_error has no message.");
}
};
} // end anonymous namespace
static ManagedStatic<SampleProfErrorCategoryType> ErrorCategory;
const std::error_category &llvm::sampleprof_category() {
return *ErrorCategory;
}
void LineLocation::print(raw_ostream &OS) const {
OS << LineOffset;
if (Discriminator > 0)
OS << "." << Discriminator;
}
raw_ostream &llvm::sampleprof::operator<<(raw_ostream &OS,
const LineLocation &Loc) {
Loc.print(OS);
return OS;
}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void LineLocation::dump() const { print(dbgs()); }
#endif
/// \brief Print the sample record to the stream \p OS indented by \p Indent.
void SampleRecord::print(raw_ostream &OS, unsigned Indent) const {
OS << NumSamples;
if (hasCalls()) {
OS << ", calls:";
for (const auto &I : getCallTargets())
OS << " " << I.first() << ":" << I.second;
}
OS << "\n";
}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void SampleRecord::dump() const { print(dbgs(), 0); }
#endif
raw_ostream &llvm::sampleprof::operator<<(raw_ostream &OS,
const SampleRecord &Sample) {
Sample.print(OS, 0);
return OS;
}
/// \brief Print the samples collected for a function on stream \p OS.
void FunctionSamples::print(raw_ostream &OS, unsigned Indent) const {
OS << TotalSamples << ", " << TotalHeadSamples << ", " << BodySamples.size()
<< " sampled lines\n";
OS.indent(Indent);
if (!BodySamples.empty()) {
OS << "Samples collected in the function's body {\n";
SampleSorter<LineLocation, SampleRecord> SortedBodySamples(BodySamples);
for (const auto &SI : SortedBodySamples.get()) {
OS.indent(Indent + 2);
OS << SI->first << ": " << SI->second;
}
OS.indent(Indent);
OS << "}\n";
} else {
OS << "No samples collected in the function's body\n";
}
OS.indent(Indent);
if (!CallsiteSamples.empty()) {
OS << "Samples collected in inlined callsites {\n";
SampleSorter<LineLocation, FunctionSamplesMap> SortedCallsiteSamples(
CallsiteSamples);
for (const auto &CS : SortedCallsiteSamples.get()) {
for (const auto &FS : CS->second) {
OS.indent(Indent + 2);
OS << CS->first << ": inlined callee: " << FS.second.getName() << ": ";
FS.second.print(OS, Indent + 4);
}
}
OS << "}\n";
} else {
OS << "No inlined callsites in this function\n";
}
}
raw_ostream &llvm::sampleprof::operator<<(raw_ostream &OS,
const FunctionSamples &FS) {
FS.print(OS);
return OS;
}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void FunctionSamples::dump() const { print(dbgs(), 0); }
#endif
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