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75722a7d1f
Add a new serializer, using a binary format based on the LLVM bitstream format. This format provides a way to serialize the remarks in two modes: 1) Separate mode: the metadata is separate from the remark entries. 2) Standalone mode: the metadata and the remark entries are in the same file. The format contains: * a meta block: container version, container type, string table, external file path, remark version * a remark block: type, remark name, pass name, function name, debug file, debug line, debug column, hotness, arguments (key, value, debug file, debug line, debug column) A string table is required for this format, which will be dumped in the meta block to be consumed before parsing the remark blocks. On clang itself, we noticed a size reduction of 13.4x compared to YAML, and a compile-time reduction of between 1.7% and 3.5% on CTMark. Differential Revision: https://reviews.llvm.org/D63466 Original llvm-svn: 367364 Revert llvm-svn: 367370 llvm-svn: 367372
33 lines
1.2 KiB
C++
33 lines
1.2 KiB
C++
//===- RemarkFormat.cpp --------------------------------------------------===//
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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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// Implementation of utilities to handle the different remark formats.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Remarks/RemarkFormat.h"
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#include "llvm/ADT/StringSwitch.h"
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using namespace llvm;
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using namespace llvm::remarks;
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Expected<Format> llvm::remarks::parseFormat(StringRef FormatStr) {
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auto Result = StringSwitch<Format>(FormatStr)
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.Cases("", "yaml", Format::YAML)
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.Case("yaml-strtab", Format::YAMLStrTab)
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.Case("bitstream", Format::Bitstream)
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.Default(Format::Unknown);
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if (Result == Format::Unknown)
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return createStringError(std::make_error_code(std::errc::invalid_argument),
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"Unknown remark format: '%s'",
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FormatStr.data());
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return Result;
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}
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