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llvm / llvm-project / lld / d80b7dbdc41e16d5cfc7dbfdd34e27e49e1fbb75
commitd80b7dbdc41e16d5cfc7dbfdd34e27e49e1fbb75[log] [tgz]
authorAlexandre Ganea <37383324+aganea@users.noreply.github.com>Thu Oct 05 22:33:58 2023 -0400
committerCopybara-Service <copybara-worker@google.com>Thu Oct 05 19:41:03 2023 -0700
tree41c20452895f299ca274138790da788e528838cc
parent0f8270a5d9940304c6153f085c72292437a50e60 [diff]
[LLD][COFF] Add support for `--time-trace` (#68236)

This adds support for generating Chrome-tracing .json profile traces in
the LLD COFF driver.

Also add the necessary time scopes, so that the profile trace shows in
great detail which tasks are executed.

As an example, this is what we see when linking a Unreal Engine
executable:

![image](https://github.com/llvm/llvm-project/assets/37383324/b2e26eb4-9d37-4cf9-b002-48b604e7dcb7)

GitOrigin-RevId: 356139bd027d65b6843cbd4eda642104cfe6cf8f
17 files changed
tree: 41c20452895f299ca274138790da788e528838cc
  1. cmake/
  2. COFF/
  3. Common/
  4. docs/
  5. ELF/
  6. include/
  7. MachO/
  8. MinGW/
  9. test/
  10. tools/
  11. unittests/
  12. utils/
  13. wasm/
  14. .clang-format
  15. .clang-tidy
  16. .gitignore
  17. CMakeLists.txt
  18. CODE_OWNERS.TXT
  19. LICENSE.TXT
  20. README.md
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.