| commit | 1fddb9a84b88c0326491d304deb1ea37e5e80964 | [log] [tgz] |
|---|---|---|
| author | Jinyang He <hejinyang@loongson.cn> | Tue Mar 05 15:50:14 2024 +0800 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Mar 04 23:56:58 2024 -0800 |
| tree | a41bc18568d1570931db207d2f2aa365f1e731c5 | |
| parent | 403b56d078ee3c7a57c892f3d33a4eebf80093b9 [diff] |
[lld][LoongArch] Support the R_LARCH_{ADD,SUB}_ULEB128 relocation types (#81133)
For a label difference like `.uleb128 A-B`, MC generates a pair of
R_LARCH_{ADD,SUB}_ULEB128 if A-B cannot be folded as a constant. GNU
assembler generates a pair of relocations in more cases (when A or B is
in a code section with linker relaxation). It is similar to RISCV.
R_LARCH_{ADD,SUB}_ULEB128 relocations are created by Clang and GCC in
`.gcc_except_table` and other debug sections with linker relaxation
enabled. On LoongArch, first read the buf and count the available space.
Then add or sub the value. Finally truncate the expected value and fill
it into the available space.
GitOrigin-RevId: eaa9ef678c63bf392ec2d5b736605db7ea7e7338
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.