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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
//===- InstrProfWriter.h - Instrumented profiling writer --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing profiling data for instrumentation
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// based PGO and coverage.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PROFILEDATA_INSTRPROFWRITER_H
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#define LLVM_PROFILEDATA_INSTRPROFWRITER_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <cstdint>
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#include <memory>
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namespace llvm {
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/// Writer for instrumentation based profile data.
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class InstrProfRecordWriterTrait;
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class ProfOStream;
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class raw_fd_ostream;
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class InstrProfWriter {
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public:
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using ProfilingData = SmallDenseMap<uint64_t, InstrProfRecord>;
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enum ProfKind { PF_Unknown = 0, PF_FE, PF_IRLevel };
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private:
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bool Sparse;
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StringMap<ProfilingData> FunctionData;
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ProfKind ProfileKind = PF_Unknown;
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// Use raw pointer here for the incomplete type object.
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InstrProfRecordWriterTrait *InfoObj;
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public:
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InstrProfWriter(bool Sparse = false);
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~InstrProfWriter();
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/// Add function counts for the given function. If there are already counts
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/// for this function and the hash and number of counts match, each counter is
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/// summed. Optionally scale counts by \p Weight.
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void addRecord(NamedInstrProfRecord &&I, uint64_t Weight,
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function_ref<void(Error)> Warn);
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void addRecord(NamedInstrProfRecord &&I, function_ref<void(Error)> Warn) {
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addRecord(std::move(I), 1, Warn);
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}
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/// Merge existing function counts from the given writer.
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void mergeRecordsFromWriter(InstrProfWriter &&IPW,
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function_ref<void(Error)> Warn);
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/// Write the profile to \c OS
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void write(raw_fd_ostream &OS);
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/// Write the profile in text format to \c OS
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Error writeText(raw_fd_ostream &OS);
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/// Write \c Record in text format to \c OS
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static void writeRecordInText(StringRef Name, uint64_t Hash,
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const InstrProfRecord &Counters,
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InstrProfSymtab &Symtab, raw_fd_ostream &OS);
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/// Write the profile, returning the raw data. For testing.
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std::unique_ptr<MemoryBuffer> writeBuffer();
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/// Set the ProfileKind. Report error if mixing FE and IR level profiles.
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Error setIsIRLevelProfile(bool IsIRLevel) {
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if (ProfileKind == PF_Unknown) {
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ProfileKind = IsIRLevel ? PF_IRLevel: PF_FE;
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return Error::success();
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}
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return (IsIRLevel == (ProfileKind == PF_IRLevel))
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? Error::success()
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: make_error<InstrProfError>(
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instrprof_error::unsupported_version);
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}
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// Internal interface for testing purpose only.
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void setValueProfDataEndianness(support::endianness Endianness);
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void setOutputSparse(bool Sparse);
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private:
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void addRecord(StringRef Name, uint64_t Hash, InstrProfRecord &&I,
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uint64_t Weight, function_ref<void(Error)> Warn);
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bool shouldEncodeData(const ProfilingData &PD);
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void writeImpl(ProfOStream &OS);
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};
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} // end namespace llvm
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#endif // LLVM_PROFILEDATA_INSTRPROFWRITER_H
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