ba228181c2
Linking large Hexagon binaries (e.g. ASan runtime with >8 MiB of text) fails with R_HEX_B22_PCREL / R_HEX_PLT_B22_PCREL relocation overflow on calls to PLT entries, even though the thunk infrastructure exists and needsThunks is set. needsThunk() always used s.getVA() to compute the branch destination, even for PLT calls where the actual destination is the PLT entry. This meant the distance check used the wrong address and failed to create thunks when the PLT entry was out of B22_PCREL range. Fix by using s.getPltVA() when expr == R_PLT_PC. Also override getThunkSectionSpacing() so ThunkSections are pre-created at appropriate intervals for large binaries.
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.