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Promote the wasm32-wasip2 target to Tier 2

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This commit promotes the `wasm32-wasip2` Rust target to tier 2 as
proposed in rust-lang/compiler-team#760. There are two major changes in
this PR:

1. The `dist-various-2` container, which already produces the other WASI
   targets, now has an extra target added for `wasm32-wasip2`.
2. A new `wasm-component-ld` binary is added to all host toolchains when
   LLD is enabled. This is the linker used for the `wasm32-wasip2` target.

This new linker is added for all host toolchains to ensure that all host
toolchains can produce the `wasm32-wasip2` target. This is similar to
how `rust-lld` was originally included for all host toolchains to be
able to produce WebAssembly output when the targets were first added.
The new linker is developed [here][wasm-component-ld] and is pulled in
via a crates.io-based dependency to the tree here.

[wasm-component-ld]: https://github.com/bytecodealliance/wasm-component-ld
This commit is contained in:
Alex Crichton 2024-06-24 12:30:44 -07:00
parent 9dcaa7f92c
commit 2a3e22bf04
9 changed files with 291 additions and 3 deletions
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4
Cargo.toml
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@ -45,6 +45,7 @@ members = [
"src/tools/opt-dist",
"src/tools/coverage-dump",
"src/tools/rustc-perf-wrapper",
"src/tools/wasm-component-ld",
]
exclude = [
@ -104,6 +105,9 @@ rustc-demangle.debug = 0
[profile.release.package.lld-wrapper]
debug = 0
strip = true
[profile.release.package.wasm-component-ld-wrapper]
debug = 0
strip = true
[patch.crates-io]
# See comments in `library/rustc-std-workspace-core/README.md` for what's going on