2019-07-16 23:24:59 +08:00
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//===- 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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Reland: [Remarks] Add an LLVM-bitstream-based remark serializer
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
2019-07-31 08:13:51 +08:00
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.Case("yaml-strtab", Format::YAMLStrTab)
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.Case("bitstream", Format::Bitstream)
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2019-07-16 23:24:59 +08:00
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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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2019-07-25 00:36:35 +08:00
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"Unknown remark format: '%s'",
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2019-07-16 23:24:59 +08:00
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FormatStr.data());
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return Result;
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}
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