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llvm / lld / 5deb4e286736c1b27fca9d1324fdbbcd2d790d52
commit5deb4e286736c1b27fca9d1324fdbbcd2d790d52[log] [tgz]
authorBob Haarman <llvm@inglorion.net>Wed Feb 20 00:26:01 2019 +0000
committerBob Haarman <llvm@inglorion.net>Wed Feb 20 00:26:01 2019 +0000
tree74a431be767a1fbb85d41045a2a270ff25d09462
parentf963bf876e440891e7103c9a6cdd52a9ab3fec42 [diff]
[lld-link] preserve @llvm.used symbols in LTO

Summary:
We translate @llvm.used to COFF by generating /include directives
in the .drectve section. However, in LTO links, this happens after
directives have already been processed, so the new directives do
not take effect. This change marks @llvm.used symbols as GCRoots
so that they are preserved as intended.

Fixes PR40733.

Reviewers: rnk, pcc, ruiu

Reviewed By: ruiu

Subscribers: mehdi_amini, steven_wu, dexonsmith, dang, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58255

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@354410 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed
tree: 74a431be767a1fbb85d41045a2a270ff25d09462
  1. cmake/
  2. COFF/
  3. Common/
  4. docs/
  5. ELF/
  6. include/
  7. lib/
  8. MinGW/
  9. test/
  10. tools/
  11. unittests/
  12. utils/
  13. wasm/
  14. .arcconfig
  15. .clang-format
  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.