forked from OSchip/llvm-project
11201315d5
Bitcode writer does not flush buffer until the end by default. This is fine to small bitcode files. When -flto,--plugin-opt=emit-llvm,-gmlt are used, the final bitcode file is large, for example, >8G. Keeping all data in memory consumes a lot of memory. This change allows bitcode writer flush data to disk early when buffered data size is above some threshold. This is only enabled when lld emits LLVM bitcode. One issue to address is backpatching bitcode: subblock length, function body indexes, meta data indexes need to backfill. If buffer can be flushed partially, we introduced raw_fd_stream that supports read/seek/write, and enables backpatching bitcode flushed in disk. Reviewed-by: tejohnson, MaskRay Differential Revision: https://reviews.llvm.org/D86905 |
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| .. | ||
| COFF | ||
| 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.