mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-18 20:27:03 +00:00
501c77da60
These relocations apply to 16-bit Thumb instructions, so reading 16 bits rather than 32 bits ensures the correct bits are masked and written back. This fixes the incorrect masking and aligns the relocation logic with the instruction encoding. Before this patch, 32 bits were read from the ELF object. This did not align with the instruction size of 16 bits, but the masking incidentally made it all work nonetheless. However, this was the case only in little endian. In big endian mode, the read 32-bit word had to have its bytes reversed. With this byte reordering, the masking would be applied to the wrong bits, hence causing the incorrect encoding to be produced as a result of the relocation resolution. The added test checks the result for both little and big endian modes.
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.