commit | 5842a56cb02050d32708940db1476d58c5609e0b | [log] [tgz] |
---|---|---|
author | Nico Weber <nicolasweber@gmx.de> | Sat Sep 15 18:37:22 2018 +0000 |
committer | Nico Weber <nicolasweber@gmx.de> | Sat Sep 15 18:37:22 2018 +0000 |
tree | c713a6c2c19f68c14d6a01d38583c95f63213f2d | |
parent | dda930c4ebce41d12ec8bc148b8189f28595deca [diff] |
lld-link: Set PDB GUID to hash of PDB contents instead of to a random byte sequence. Previously, lld-link would use a random byte sequence as the PDB GUID. Instead, use a hash of the PDB file contents. To not disturb llvm-pdbutil pdb2yaml, the hash generation is an opt-in feature on InfoStreamBuilder and ldb/COFF/PDB.cpp always sets it. Since writing the PDB computes this ID which also goes in the exe, the PDB writing code now must be called before writeBuildId(). writeBuildId() for that reason is no longer included in the "Code Layout" timer. Since the PDB GUID is now a function of the PDB contents, the PDB Age is always set to 1. There was a long comment above loadExistingBuildId (now gone) about how not changing the GUID and only incrementing the age was important, but according to the discussion in PR35914 that comment was incorrect. Differential Revision: https://reviews.llvm.org/D51956 git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@342334 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.