mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
utils/sort_includes.py. I clearly haven't done this in a while, so more changed than usual. This even uncovered a missing include from the InstrProf library that I've added. No functionality changed here, just mechanical cleanup of the include order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225974 91177308-0d34-0410-b5e6-96231b3b80d8
127 lines
3.9 KiB
C++
127 lines
3.9 KiB
C++
//===- SampleProfWriter.cpp - Write LLVM sample profile data --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the class that writes LLVM sample profiles. It
|
|
// supports two file formats: text and binary. The textual representation
|
|
// is useful for debugging and testing purposes. The binary representation
|
|
// is more compact, resulting in smaller file sizes. However, they can
|
|
// both be used interchangeably.
|
|
//
|
|
// See lib/ProfileData/SampleProfReader.cpp for documentation on each of the
|
|
// supported formats.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/ProfileData/SampleProfWriter.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/ErrorOr.h"
|
|
#include "llvm/Support/LEB128.h"
|
|
#include "llvm/Support/LineIterator.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/Regex.h"
|
|
|
|
using namespace llvm::sampleprof;
|
|
using namespace llvm;
|
|
|
|
/// \brief Write samples to a text file.
|
|
bool SampleProfileWriterText::write(StringRef FName, const FunctionSamples &S) {
|
|
if (S.empty())
|
|
return true;
|
|
|
|
OS << FName << ":" << S.getTotalSamples() << ":" << S.getHeadSamples()
|
|
<< "\n";
|
|
|
|
for (const auto &I : S.getBodySamples()) {
|
|
LineLocation Loc = I.first;
|
|
const SampleRecord &Sample = I.second;
|
|
if (Loc.Discriminator == 0)
|
|
OS << Loc.LineOffset << ": ";
|
|
else
|
|
OS << Loc.LineOffset << "." << Loc.Discriminator << ": ";
|
|
|
|
OS << Sample.getSamples();
|
|
|
|
for (const auto &J : Sample.getCallTargets())
|
|
OS << " " << J.first() << ":" << J.second;
|
|
OS << "\n";
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
SampleProfileWriterBinary::SampleProfileWriterBinary(StringRef F,
|
|
std::error_code &EC)
|
|
: SampleProfileWriter(F, EC, sys::fs::F_None) {
|
|
if (EC)
|
|
return;
|
|
|
|
// Write the file header.
|
|
encodeULEB128(SPMagic(), OS);
|
|
encodeULEB128(SPVersion(), OS);
|
|
}
|
|
|
|
/// \brief Write samples to a binary file.
|
|
///
|
|
/// \returns true if the samples were written successfully, false otherwise.
|
|
bool SampleProfileWriterBinary::write(StringRef FName,
|
|
const FunctionSamples &S) {
|
|
if (S.empty())
|
|
return true;
|
|
|
|
OS << FName;
|
|
encodeULEB128(0, OS);
|
|
encodeULEB128(S.getTotalSamples(), OS);
|
|
encodeULEB128(S.getHeadSamples(), OS);
|
|
encodeULEB128(S.getBodySamples().size(), OS);
|
|
for (const auto &I : S.getBodySamples()) {
|
|
LineLocation Loc = I.first;
|
|
const SampleRecord &Sample = I.second;
|
|
encodeULEB128(Loc.LineOffset, OS);
|
|
encodeULEB128(Loc.Discriminator, OS);
|
|
encodeULEB128(Sample.getSamples(), OS);
|
|
encodeULEB128(Sample.getCallTargets().size(), OS);
|
|
for (const auto &J : Sample.getCallTargets()) {
|
|
std::string Callee = J.first();
|
|
unsigned CalleeSamples = J.second;
|
|
OS << Callee;
|
|
encodeULEB128(0, OS);
|
|
encodeULEB128(CalleeSamples, OS);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/// \brief Create a sample profile writer based on the specified format.
|
|
///
|
|
/// \param Filename The file to create.
|
|
///
|
|
/// \param Writer The writer to instantiate according to the specified format.
|
|
///
|
|
/// \param Format Encoding format for the profile file.
|
|
///
|
|
/// \returns an error code indicating the status of the created writer.
|
|
ErrorOr<std::unique_ptr<SampleProfileWriter>>
|
|
SampleProfileWriter::create(StringRef Filename, SampleProfileFormat Format) {
|
|
std::error_code EC;
|
|
std::unique_ptr<SampleProfileWriter> Writer;
|
|
|
|
if (Format == SPF_Binary)
|
|
Writer.reset(new SampleProfileWriterBinary(Filename, EC));
|
|
else if (Format == SPF_Text)
|
|
Writer.reset(new SampleProfileWriterText(Filename, EC));
|
|
else
|
|
EC = sampleprof_error::unrecognized_format;
|
|
|
|
if (EC)
|
|
return EC;
|
|
|
|
return std::move(Writer);
|
|
}
|