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bbe8cd1333
The module paths string table mapped to both an id sequentially assigned during LTO linking, and the module hash. The former is leftover from before the module hash was added for caching and subsequently replaced use of the module id when renaming promoted symbols (to avoid affects due to link order changes). The sequentially assigned module id was not removed, however, as it was still a convenience when serializing to/from bitcode and assembly. This patch removes the module id from this table, since it isn't strictly needed and can lead to confusion on when it is appropriate to use (e.g. see fix in D156525). It also takes a (likely not significant) amount of overhead. Where an integer module id is needed (e.g. bitcode writing), one is assigned on the fly. There are a couple of test changes since the paths are now sorted alphanumerically when assigning ids on the fly during assembly writing, in order to ensure deterministic behavior. Differential Revision: https://reviews.llvm.org/D156730
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.