Remove the wasm32-wasi target from rustc

This commit is the final step in the journey of renaming the historical
`wasm32-wasi` target in the Rust compiler to `wasm32-wasip1`. Various
steps in this journey so far have been:

* 2023-04-03: rust-lang/compiler-team#607 - initial proposal for this rename
* 2024-11-27: rust-lang/compiler-team#695 - amended schedule/procedure for rename
* 2024-01-29: rust-lang/rust#120468 - initial introduction of `wasm32-wasip1`
* 2024-06-18: rust-lang/rust#126662 - warn on usage of `wasm32-wasi`
* 2024-11-08: this PR - remove the `wasm32-wasi` target

The full transition schedule is in [this comment][comment] and is
summarized with:

* 2024-05-02: Rust 1.78 released with `wasm32-wasip1` target
* 2024-09-05: Rust 1.81 released warning on usage of `wasm32-wasi`
* 2025-01-09: Rust 1.84 to be released without the `wasm32-wasi` target

This means that support on stable for the replacement target of
`wasm32-wasip1` has currently been available for 6 months. Users have
already seen warnings on stable for 2 months about usage of
`wasm32-wasi` and stable users have another 2 months of warnings before
the target is removed from stable.

This commit is intended to be the final step in this transition so the
source tree should no longer mention `wasm32-wasi` except in historical
reference to the older name of the `wasm32-wasip1` target.

[comment]: https://github.com/rust-lang/rust/pull/120468#issuecomment-1977878747

compiler/rustc_session/src/config.rs

@@ -1350,19 +1350,6 @@ pub fn build_target_config(early_dcx: &EarlyDiagCtxt, opts: &Options, sysroot: &
                 early_dcx.early_warn(warning)
             }
 
-            // The `wasm32-wasi` target is being renamed to `wasm32-wasip1` as
-            // part of rust-lang/compiler-team#607 and
-            // rust-lang/compiler-team#695. Warn unconditionally on usage to
-            // raise awareness of the renaming. This code will be deleted in
-            // October 2024.
-            if opts.target_triple.tuple() == "wasm32-wasi" {
-                early_dcx.early_warn(
-                    "the `wasm32-wasi` target is being renamed to \
-                    `wasm32-wasip1` and the `wasm32-wasi` target will be \
-                    removed from nightly in October 2024 and removed from \
-                    stable Rust in January 2025",
-                )
-            }
             if !matches!(target.pointer_width, 16 | 32 | 64) {
                 early_dcx.early_fatal(format!(
                     "target specification was invalid: unrecognized target-pointer-width {}",

compiler/rustc_target/src/spec/mod.rs

@@ -1806,7 +1806,6 @@ supported_targets! {
     ("wasm32-unknown-emscripten", wasm32_unknown_emscripten),
     ("wasm32-unknown-unknown", wasm32_unknown_unknown),
     ("wasm32v1-none", wasm32v1_none),
-    ("wasm32-wasi", wasm32_wasi),
     ("wasm32-wasip1", wasm32_wasip1),
     ("wasm32-wasip2", wasm32_wasip2),
     ("wasm32-wasip1-threads", wasm32_wasip1_threads),

compiler/rustc_target/src/spec/targets/wasm32_wasi.rs

@@ -1,11 +0,0 @@
-//! NB: This target is in the process of being renamed to
-//! `wasm32-wasip1`. For more information see:
-//!
-//! * <https://github.com/rust-lang/compiler-team/issues/607>
-//! * <https://github.com/rust-lang/compiler-team/issues/695>
-
-use crate::spec::Target;
-
-pub(crate) fn target() -> Target {
-    super::wasm32_wasip1::target()
-}

compiler/rustc_target/src/spec/targets/wasm32_wasip1.rs

@@ -17,7 +17,7 @@ pub(crate) fn target() -> Target {
 
     options.os = "wasi".into();
     options.env = "p1".into();
-    options.add_pre_link_args(LinkerFlavor::WasmLld(Cc::Yes), &["--target=wasm32-wasi"]);
+    options.add_pre_link_args(LinkerFlavor::WasmLld(Cc::Yes), &["--target=wasm32-wasip1"]);
 
     options.pre_link_objects_self_contained = crt_objects::pre_wasi_self_contained();
     options.post_link_objects_self_contained = crt_objects::post_wasi_self_contained();
@@ -47,7 +47,7 @@ pub(crate) fn target() -> Target {
     options.entry_name = "__main_void".into();
 
     Target {
-        llvm_target: "wasm32-wasi".into(),
+        llvm_target: "wasm32-wasip1".into(),
         metadata: crate::spec::TargetMetadata {
             description: Some("WebAssembly with WASI".into()),
             tier: Some(2),

compiler/rustc_target/src/spec/targets/wasm32_wasip2.rs

@@ -1,5 +1,5 @@
 //! The `wasm32-wasip2` target is the next evolution of the
-//! wasm32-wasi target. While the wasi specification is still under
+//! wasm32-wasip1 target. While the wasi specification is still under
 //! active development, the preview 2 iteration is considered an "island
 //! of stability" that should allow users to rely on it indefinitely.
 //!

src/ci/docker/host-x86_64/dist-various-2/Dockerfile

@@ -114,7 +114,6 @@ ENV CARGO_TARGET_AARCH64_UNKNOWN_FUCHSIA_RUSTFLAGS \
 ENV TARGETS=x86_64-unknown-fuchsia
 ENV TARGETS=$TARGETS,aarch64-unknown-fuchsia
 ENV TARGETS=$TARGETS,wasm32-unknown-unknown
-ENV TARGETS=$TARGETS,wasm32-wasi
 ENV TARGETS=$TARGETS,wasm32-wasip1
 ENV TARGETS=$TARGETS,wasm32-wasip1-threads
 ENV TARGETS=$TARGETS,wasm32-wasip2

src/doc/rustc/src/platform-support.md

@@ -192,8 +192,8 @@ target | std | notes
 [`thumbv8m.main-none-eabihf`](platform-support/thumbv8m.main-none-eabi.md) | * | Bare Armv8-M Mainline, hardfloat
 [`wasm32-unknown-emscripten`](platform-support/wasm32-unknown-emscripten.md) | ✓ | WebAssembly via Emscripten
 [`wasm32-unknown-unknown`](platform-support/wasm32-unknown-unknown.md) | ✓ | WebAssembly
-`wasm32-wasi` | ✓ | WebAssembly with WASI (undergoing a [rename to `wasm32-wasip1`][wasi-rename])
+[`wasm32-wasip1`](platform-support/wasm32-wasip1.md) | ✓ | WebAssembly with WASIp1
-[`wasm32-wasip1`](platform-support/wasm32-wasip1.md) | ✓ | WebAssembly with WASI
+[`wasm32-wasip2`](platform-support/wasm32-wasip2.md) | ✓ | WebAssembly with WASIp2
 [`wasm32-wasip1-threads`](platform-support/wasm32-wasip1-threads.md) | ✓ | WebAssembly with WASI Preview 1 and threads
 [`wasm32v1-none`](platform-support/wasm32v1-none.md) | * | WebAssembly limited to 1.0 features and no imports
 [`x86_64-apple-ios`](platform-support/apple-ios.md) | ✓ | 64-bit x86 iOS
@@ -377,7 +377,6 @@ target | std | host | notes
 `thumbv7a-pc-windows-msvc` | ✓ |  |
 `thumbv7a-uwp-windows-msvc` | ✓ |  |
 `thumbv7neon-unknown-linux-musleabihf` | ? |  | Thumb2-mode Armv7-A Linux with NEON, musl 1.2.3
-[`wasm32-wasip2`](platform-support/wasm32-wasip2.md) | ✓ |  | WebAssembly
 [`wasm64-unknown-unknown`](platform-support/wasm64-unknown-unknown.md) | ? |  | WebAssembly
 [`x86_64-apple-tvos`](platform-support/apple-tvos.md) | ✓ |  | x86 64-bit tvOS
 [`x86_64-apple-watchos-sim`](platform-support/apple-watchos.md) | ✓ |  | x86 64-bit Apple WatchOS simulator

src/doc/rustc/src/platform-support/wasm32-wasip1.md

@@ -98,10 +98,6 @@ the target with:
 rustup target add wasm32-wasip1
 ```
 
-> **Note**: the `wasm32-wasip1` target is new and may only be available
-> on nightly by the time you're reading this. If `wasm32-wasip1` isn't
-> available on stable Rust then `wasm32-wasi` should be available instead.
-
 Rust programs can be built for that target:
 
 ```text

src/doc/unstable-book/src/compiler-flags/wasm-c-abi.md

@@ -4,7 +4,7 @@ This option controls whether Rust uses the spec-compliant C ABI when compiling
 for the `wasm32-unknown-unknown` target.
 
 This makes it possible to be ABI-compatible with all other spec-compliant Wasm
-like Rusts `wasm32-wasi`.
+like Rusts `wasm32-wasip1`.
 
 This compiler flag is perma-unstable, as it will be enabled by default in the
 future with no option to fall back to the old non-spec-compliant ABI.

src/tools/build-manifest/src/main.rs

@@ -157,7 +157,6 @@ static TARGETS: &[&str] = &[
     "thumbv8m.main-none-eabihf",
     "wasm32-unknown-emscripten",
     "wasm32-unknown-unknown",
-    "wasm32-wasi",
     "wasm32-wasip1",
     "wasm32-wasip1-threads",
     "wasm32-wasip2",

src/tools/compiletest/src/header/tests.rs

@@ -583,10 +583,6 @@ fn wasm_special() {
         ("wasm32-unknown-emscripten", "emscripten", true),
         ("wasm32-unknown-emscripten", "wasm32", true),
         ("wasm32-unknown-emscripten", "wasm32-bare", false),
-        ("wasm32-wasi", "emscripten", false),
-        ("wasm32-wasi", "wasm32", true),
-        ("wasm32-wasi", "wasm32-bare", false),
-        ("wasm32-wasi", "wasi", true),
         ("wasm32-wasip1", "emscripten", false),
         ("wasm32-wasip1", "wasm32", true),
         ("wasm32-wasip1", "wasm32-bare", false),

tests/assembly/targets/targets-elf.rs

@@ -525,9 +525,6 @@
 //@ revisions: wasm32v1_none
 //@ [wasm32v1_none] compile-flags: --target wasm32v1-none
 //@ [wasm32v1_none] needs-llvm-components: webassembly
-//@ revisions: wasm32_wasi
-//@ [wasm32_wasi] compile-flags: --target wasm32-wasi
-//@ [wasm32_wasi] needs-llvm-components: webassembly
 //@ revisions: wasm32_wasip1
 //@ [wasm32_wasip1] compile-flags: --target wasm32-wasip1
 //@ [wasm32_wasip1] needs-llvm-components: webassembly

tests/codegen/repr/transparent-opaque-ptr.rs

@@ -1,12 +1,12 @@
-//@ revisions: aarch64-linux aarch64-darwin wasm32-wasi
+//@ revisions: aarch64-linux aarch64-darwin wasm32-wasip1
 //@ compile-flags: -O -C no-prepopulate-passes
 
 //@[aarch64-linux] compile-flags: --target aarch64-unknown-linux-gnu
 //@[aarch64-linux] needs-llvm-components: aarch64
 //@[aarch64-darwin] compile-flags: --target aarch64-apple-darwin
 //@[aarch64-darwin] needs-llvm-components: aarch64
-//@[wasm32-wasi] compile-flags: --target wasm32-wasi
+//@[wasm32-wasip1] compile-flags: --target wasm32-wasip1
-//@[wasm32-wasi] needs-llvm-components: webassembly
+//@[wasm32-wasip1] needs-llvm-components: webassembly
 
 // See ./transparent.rs
 // Some platforms pass large aggregates using immediate arrays in LLVMIR