| commit | c4ac5bcc8dffb68ff40359496a302416e1d69abe | [log] [tgz] |
|---|---|---|
| author | Jez Ng <jezng@fb.com> | Thu Mar 11 13:28:13 2021 -0500 |
| committer | Copybara-Service <copybara-worker@google.com> | Thu Mar 18 00:35:31 2021 -0700 |
| tree | d2603d37ee41c818be25f1eae696212d223da9c4 | |
| parent | b17bd95fb96f43795d95b8747b7a93d55a0621b2 [diff] |
[lld-macho][nfc] Refactor subtractor reloc handling SUBTRACTOR relocations are always paired with UNSIGNED relocations to indicate a pair of symbols whose address difference we want. Functionally they are like a single relocation: only one pointer gets written / relocated. Previously, we would handle these pairs by skipping over the SUBTRACTOR relocation and writing the pointer when handling the UNSIGNED reloc. This diff reverses things, so we write while handling SUBTRACTORs and skip over the UNSIGNED relocs instead. Being able to distinguish between SUBTRACTOR and UNSIGNED relocs in the write phase (i.e. inside `relocateOne`) is useful for the upcoming range check diff: we want to check that SUBTRACTOR relocs write signed values, but UNSIGNED relocs (naturally) write unsigned values. Reviewed By: #lld-macho, thakis Differential Revision: https://reviews.llvm.org/D98386 GitOrigin-RevId: a723db92d87d098d564ac8ace8b1d24bb02a9fdb
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.
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.