| commit | f2a1028469505507e44e9a8b67aa64b378a81572 | [log] [tgz] |
|---|---|---|
| author | Peter Collingbourne <peter@pcc.me.uk> | Tue Jan 22 23:51:35 2019 +0000 |
| committer | Peter Collingbourne <peter@pcc.me.uk> | Tue Jan 22 23:51:35 2019 +0000 |
| tree | 05d3e563d0de02ac6582e5c9ab6af0094ab7edc9 | |
| parent | 476c47495259e709b3ce0380e54c7e3b2031790c [diff] |
COFF, ELF: Adjust ICF hash computation to account for self relocations. It turns out that sections in PGO instrumented object files on Windows contain a large number of relocations pointing to themselves. With r347429 this can cause many sections to receive the same hash (usually zero) as a result of a section's hash being xor'ed with itself. This patch causes the COFF and ELF linkers to avoid this problem by adding the hash of the relocated section instead of xor'ing it. On my machine this causes the regressing test case provided by Mozilla to terminate in 2m41s. Differential Revision: https://reviews.llvm.org/D56955 git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@351898 91177308-0d34-0410-b5e6-96231b3b80d8
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.
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.