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llvm-project/lld
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Fangrui Song 7cd0c45364 [ELF] Simplify SectionBase::partition handling and make it live by default. NFC 
Previously an InputSectionBase is dead (`partition==0`) by default.
SyntheticSection calls markLive and BssSection overrides that with markDead.

It is more natural to make InputSectionBase live by default and let
--gc-sections mark InputSectionBase dead.

When linking a Release build of clang:

* --no-gc-sections:, the removed `inputSections` loop decreases markLive time from 4ms to 1ms.
* --gc-sections: the extra `inputSections` loop increases markLive time from 0.181296s to 0.188526s.
  This is as of we lose the removing one `inputSections` loop optimization (4374824ccf).
  I believe the loss can be mitigated if we refactor markLive.
 		2022-01-30 15:12:09 -08:00
..
COFF Revert "Rename llvm::array_lengthof into llvm::size to match std::size from C++17" 2022-01-26 16:55:53 +01:00
Common [lld] Add module name to LTO inline asm diagnostic 2022-01-28 11:32:42 -08:00
ELF [ELF] Simplify SectionBase::partition handling and make it live by default. NFC 2022-01-30 15:12:09 -08:00
MachO [lld-macho] Add support for -add_empty_section 2022-01-30 10:03:41 -08:00
MinGW [LLD][MinGW] Add --heap argument support 2022-01-30 00:01:45 +02:00
cmake/modules [CMake] Factor out config prefix finding logic 2022-01-07 20:16:18 +00:00
docs [ELF] Update help messages to prefer canonical name for some long options 2022-01-06 00:43:46 -08:00
include/lld Re-land [LLD] Remove global state in lldCommon 2022-01-20 14:53:26 -05:00
test [lld-macho] Add support for -add_empty_section 2022-01-30 10:03:41 -08:00
tools/lld Re-land [LLD] Remove global state in lldCommon 2022-01-20 14:53:26 -05:00
utils
…
wasm [lld][WebAssembly] Handle TLS symbols in older object file 2022-01-27 17:27:09 -08:00
.clang-format
…
.clang-tidy NFC: .clang-tidy: Inherit configs from parents to improve maintainability 2021-06-08 08:25:59 -07:00
.gitignore
…
CMakeLists.txt [cmake] Make include(GNUInstallDirs) always below project(..) 2022-01-20 18:59:17 +00:00
CODE_OWNERS.TXT Add code owners of new MachO port 2020-09-02 19:32:12 -07:00
LICENSE.TXT
…
README.md [doc] Place sha256 in lld/README.md into backticks 2021-01-12 10:19:40 -08:00

README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.

Benchmarking

In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.

It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz

The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.