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
diff --git a/llvm/lib/Remarks/RemarkParser.cpp b/llvm/lib/Remarks/RemarkParser.cpp
index fba1dcf..5cfca96 100644
--- a/llvm/lib/Remarks/RemarkParser.cpp
+++ b/llvm/lib/Remarks/RemarkParser.cpp
@@ -56,6 +56,9 @@
return createStringError(
std::make_error_code(std::errc::invalid_argument),
"The YAML with string table format requires a parsed string table.");
+ case Format::Bitstream:
+ return createStringError(std::make_error_code(std::errc::invalid_argument),
+ "Parsing bitstream remarks is not supported.");
case Format::Unknown:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"Unknown remark parser format.");
@@ -73,6 +76,9 @@
"table. Use yaml-strtab instead.");
case Format::YAMLStrTab:
return llvm::make_unique<YAMLStrTabRemarkParser>(Buf, std::move(StrTab));
+ case Format::Bitstream:
+ return createStringError(std::make_error_code(std::errc::invalid_argument),
+ "Parsing bitstream remarks is not supported.");
case Format::Unknown:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"Unknown remark parser format.");
@@ -89,6 +95,9 @@
case Format::YAML:
case Format::YAMLStrTab:
return createYAMLParserFromMeta(Buf, std::move(StrTab));
+ case Format::Bitstream:
+ return createStringError(std::make_error_code(std::errc::invalid_argument),
+ "Parsing bitstream remarks is not supported.");
case Format::Unknown:
return createStringError(std::make_error_code(std::errc::invalid_argument),
"Unknown remark parser format.");