[lld][WebAssembly] Preserve segment linking flags in --relocatable output (#210747) `OutputSegment::addInputSegment` copied each input chunk's alignment but never its flags, so a relocatable link serialized `flags=0` for every data segment and dropped `RETAIN` and `STRINGS`. Losing `RETAIN` let the final default `--gc-sections` link discard runtime-registered sections such as Swift's `swift5_*` metadata, corrupting the program. This unions each input segment's flags into the output segment's `linkingFlags` and adds a `lld/test/wasm` test covering `RETAIN`, `STRINGS`, and flag accumulation across coalesced segments. Resolves https://github.com/swiftlang/swift-package-manager/issues/10314. GitOrigin-RevId: 162d9f09299d3951d7c73e6aa00f2e2bac459e26
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.