79095b4079
https://reviews.llvm.org/D133679 utilizes zstd's multithread API to create one single frame. This provides a higher compression ratio but is significantly slower than concatenating multiple frames. With manual parallelism, it is easier to parallelize memcpy in OutputSection::writeTo for parallel memcpy. In addition, as the individual allocated decompression buffers are much smaller, we can make a wild guess (compressed_size/4) without worrying about a resize (due to wrong guess) would waste memory.
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.