a5cd5d351d
Instead of always generating __wasm_apply_data_relocs when relevant options like -pie and -shared are specified, generate it only when the relevant relocations are actually necessary. Note: omitting empty __wasm_apply_data_relocs is not a problem because the export is optional in the spec (DynamicLinking.md) and all runtime linker implementations I'm aware of implement it that way. (emscripten, toywasm, wasm-tools) Motivations: * This possibly reduces the module size * This is also a preparation to fix https://github.com/llvm/llvm-project/issues/107387, for which it isn't obvious if we need these relocations at the time of createSyntheticSymbols. (unless we introduce a new explicit option like --non-pie-dynamic-link.)
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.