58f3c5e696
This supersedes https://github.com/llvm/llvm-project/pull/87818 and fixes https://github.com/llvm/llvm-project/issues/52767 When calculating arm64 thunks, we make a few assumptions that may not hold when considering code sections outside of `__text`: 1. That a section needs thunks only if its size is larger than the branch range. 2. That any calls into `__stubs` are necessarily forward jumps (that is, the section with the jump is ordered before `__stubs`) Sections like this exist in the wild, most prominently the `__lcxx_overrides` section introduced in https://github.com/llvm/llvm-project/pull/69498 This change: - Ensures that if one section in `__TEXT` gets thunks, all of them do. - Makes all code sections in `__TEXT` contiguous (and guaranteed to be placed before `__stubs`)
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.