[43.0.0] A few more backports (#12795)

* Fix the x86 preset names (#12792)

cg_clif needs them to match the target-cpu names of LLVM.

* Add `Send` to `p2::WasiHttpHooks` trait (#12793)

This means that the trait object `&mut dyn p2::WasiHttpHooks` is itself
`Send` which is generally necessary for `async` operation.

* Update release notes

---------

Co-authored-by: bjorn3 <17426603+bjorn3@users.noreply.github.com>

Author: alexcrichton

RELEASES.md

@@ -4,7 +4,7 @@ Unreleased.
 
 ### Added
 
-* Wasmtime now supports the WASIp3 snapshot `0.3.0-rc-2026-02-09`.
+* Wasmtime now supports the WASIp3 snapshot `0.3.0-rc-2026-03-15`.
   [#12557](https://github.com/bytecodealliance/wasmtime/pull/12557)
 
 * The number of frames captured in backtrace collection can now be configured.

cranelift/codegen/meta/src/isa/x86.rs

@@ -407,19 +407,19 @@ pub(crate) fn define() -> TargetIsa {
 
     // Generic
 
-    settings.add_preset("x86_64", "Generic x86-64 microarchitecture.", preset!());
+    settings.add_preset("x86-64", "Generic x86-64 microarchitecture.", preset!());
     let x86_64_v2 = settings.add_preset(
-        "x86_64_v2",
+        "x86-64-v2",
         "Generic x86-64 (V2) microarchitecture.",
         preset!(sse42 && has_popcnt && has_cmpxchg16b),
     );
     let x86_64_v3 = settings.add_preset(
-        "x86_64_v3",
+        "x86-64-v3",
         "Generic x86-64 (V3) microarchitecture.",
         preset!(x86_64_v2 && has_bmi1 && has_bmi2 && has_fma && has_lzcnt && has_avx2),
     );
     settings.add_preset(
-        "x86_64_v4",
+        "x86-64-v4",
         "Generic x86-64 (V4) microarchitecture.",
         preset!(x86_64_v3 && has_avx512dq && has_avx512vl),
     );

crates/wasi-http/src/p2/mod.rs

@@ -282,7 +282,7 @@ pub use self::error::*;
 ///     }
 /// }
 /// ```
-pub trait WasiHttpHooks {
+pub trait WasiHttpHooks: Send {
     /// Send an outgoing request.
     #[cfg(feature = "default-send-request")]
     fn send_request(