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There is no ELF support at the moment.
Remove all the references to the `.remarks` section.
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Emit a remarks section by default for the following formats:
* bitstream
* yaml-strtab
while still providing -remarks-section=<bool> to override the defaults.
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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
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This reverts commit r367364.
Breaks some bots: http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-gn/builds/3161/steps/annotate/logs/stdio
llvm-svn: 367370
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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
llvm-svn: 367364
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The default mode is separate, where the metadata is serialized
separately from the remarks.
Another mode is the standalone mode, where the metadata is serialized
before the remarks, on the same stream.
llvm-svn: 367328
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This adds support to the yaml remark parser to be able to parse remarks
directly from the metadata.
This supports parsing separate metadata and following the external file
with the associated metadata, and also a standalone file containing
metadata + remarks all together.
Original llvm-svn: 367148
Revert llvm-svn: 367151
This has a fix for gcc builds.
llvm-svn: 367155
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This reverts r367148.
Seems to fail on
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fuzzer/builds/27768.
llvm-svn: 367151
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This adds support to the yaml remark parser to be able to parse remarks
directly from the metadata.
This supports parsing separate metadata and following the external file
with the associated metadata, and also a standalone file containing
metadata + remarks all together.
llvm-svn: 367148
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This exposes better support to use a string table with a format through
an actual new remark::Format, called yaml-strtab.
This can now be used with -fsave-optimization-record=yaml-strtab.
llvm-svn: 366849
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Before, everything was based on some kind of type erased parser
implementation which container a lot of boilerplate code when multiple
formats were to be supported.
This simplifies it by:
* the remark now owns its arguments
* *always* returning an error from the implementation side
* working around the way the YAML parser reports errors: catch them through
callbacks and re-insert them in a proper llvm::Error
* add a CParser wrapper that is used when implementing the C API to
avoid cluttering the C++ API with useless state
* LLVMRemarkParserGetNext now returns an object that needs to be
released to avoid leaking resources
* add a new API to dispose of a remark entry: LLVMRemarkEntryDispose
llvm-svn: 366217
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This adds documentation that describes remarks in LLVM.
It aims at explaining what remarks are, how to enable them, and what
users can do with the different modes.
It lists all the available flags in LLVM (excluding clang), and
describes the expected YAML structure as well as the tools that support
the YAML format today.
Differential Revision: https://reviews.llvm.org/D64355
llvm-svn: 365578
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