forked from OSchip/llvm-project
b7402edce3
This reduces peak memory on my test case from 1960.14MB to 1700.63MB (-260MB, -13.2%) with no measurable impact on CPU time. I'm currently working with a publics stream that is about 277MB. Before this change, we would allocate 277MB of heap memory, serialize publics into them, hold onto that heap memory, open the PDB, and commit into it. After this change, we defer the serialization until commit time. In the last change I made to public writing, I re-sorted the list of publics multiple times in place to avoid allocating new temporary data structures. Deferring serialization until later requires that we don't reorder the publics. Instead of sorting the publics, I partially construct the hash table data structures, store a publics index in them, and then sort the hash table data structures. Later, I replace the index with the symbol record offset. This change also addresses a FIXME and moves the list of global and public records from GSIHashStreamBuilder to GSIStreamBuilder. Now that publics aren't being serialized, it makes even less sense to store them as a list of CVSymbol records. The hash table used to deduplicate globals is moved as well, since that is specific to globals, and not publics. Reviewed By: aganea, hans Differential Revision: https://reviews.llvm.org/D81296 |
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| Common | ||
| ELF | ||
| MachO | ||
| MinGW | ||
| cmake/modules | ||
| docs | ||
| include/lld | ||
| lib | ||
| test | ||
| tools/lld | ||
| unittests | ||
| utils | ||
| wasm | ||
| .clang-format | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| LICENSE.TXT | ||
| README.md | ||
README.md
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.