fc33861d48
The idea is to make scanRelocations mark some actions are needed (GOT/PLT/etc) and postpone the real work to postScanRelocations. It gives some flexibility: * Make it feasible to support .plt.got (PR32938): we need to know whether GLOB_DAT and JUMP_SLOT are both needed. * Make non-preemptible IFUNC handling slightly cleaner: avoid setting/clearing sym.gotInIgot * -z nocopyrel: report all copy relocation places for one symbol * Make parallel relocation scanning possible (if we can avoid all stateful operations and make Symbol attributes atomic), but parallelism may not be the appealing choice * Make GOT deduplication feasible Since this patch moves a large chunk of code out of ELFT templates. My x86-64 executable is actually a few hundred bytes smaller. For ppc32-ifunc-nonpreemptible-pic.s: I remove absolute relocation references to non-preemptible ifunc because absolute relocation references are incorrect in -fpie mode. Reviewed By: peter.smith, ikudrin Differential Revision: https://reviews.llvm.org/D114783
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.