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efc0fe5a72
Summary: Before, superfluous warnings were emitted for the following two cases: 1) When from symbol was in a discarded section. The profile should be thought of as affiliated to the section. It makes sense to ignore the profile if the section is discarded. 2) When to symbol was in a shared object. The object file containing the profile may not know about the to symbol, which can reside in another object file (useful profile) or a shared object (not useful as symbols in the shared object are fixed and unorderable). It makes sense to ignore the profile from the object file. Note, the warning when to symbol was undefined was suppressed in D53044, which is still useful for --symbol-ordering-file= This patch silences the warnings. The check is actually more relaxed (no warnings if either From or To is not Defined) for simplicity and I don't see a compelling reason to warn on more cases. Reviewers: ruiu, davidxl, espindola, Bigcheese Reviewed By: ruiu Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D53470 llvm-svn: 344974
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.