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llvm / llvm-project / lld / e318e9101dd4ba971e71e6daf81dd2c1537fd1a7
commite318e9101dd4ba971e71e6daf81dd2c1537fd1a7[log] [tgz]
authorFangrui Song <i@maskray.me>Sun Mar 24 14:07:09 2024 -0700
committerCopybara-Service <copybara-worker@google.com>Sun Mar 24 14:13:47 2024 -0700
tree58095cae20b87c36d8edb929a47012071b4549f4
parentf2d3e7b6202a91b31290eb1789a85fadbf4d6a81 [diff]
[ELF] Merge relaIplt into relaDyn

`relaIplt` was added so that IRELATIVE relocations are placed at the end
of .rela.dyn (since https://reviews.llvm.org/D65651) or .rela.plt
(--pack-dyn-relocs=android[+relr]). Unfortunately, handling `relaIplt`
requires special cases all over the code base. We can extend
partitionRels/computeRels to partition both RELATIVE and IRELATIVE
relocations, rendering `relaIplt` unneeded.

The change allows IRELATIVE relocations in the DT_ANDROID_REL[A] table
(untested?!), which may be processed before other types of relocations.
This seems acceptable for Bionic's DEFINE_IFUNC_FOR use cases.

In addition, this change simplies changing .rel[a].dyn to a compact
relocation format (CREL).

SHF_INFO_LINK is removed from .rel[a].dyn with IRELATIVE relocations.
(See https://reviews.llvm.org/D89828).

GitOrigin-RevId: 18a49f03aa2b6bfeb073648b9eb75277a2386fc4
8 files changed
tree: 58095cae20b87c36d8edb929a47012071b4549f4
  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.