649cac3b62
Linker relaxation may change relocations (offsets and types). However, when --emit-relocs is used, relocations are simply copied from the input section causing a mismatch with the corresponding (relaxed) code section. This patch fixes this as follows: for non-relocatable RISC-V binaries, `InputSection::copyRelocations` reads relocations from the relocated section's `relocations` array (since this gets updated by the relaxation code). For all other cases, relocations are read from the input section directly as before. In order to reuse as much code as possible, and to keep the diff small, the original `InputSection::copyRelocations` is changed to accept the relocations as a range of `Relocation` objects. This means that, in the general case when reading from the input section, raw relocations need to be converted to `Relocation`s first, which introduces quite a bit of boiler plate. It also means there's a slight code size increase due to the extra instantiations of `copyRelocations` (for both range types). Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D159082
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.