Add release notes (#11193)

Author: alexcrichton

RELEASES.md

@@ -4,8 +4,165 @@ Unreleased.
 
 ### Added
 
+* A new `InputFile` type has been added for specifying stdin as a file in WASI.
+  [#10968](https://github.com/bytecodealliance/wasmtime/pull/10968)
+
+* Conditional branches to unconditional traps are now translated to conditional
+  traps during legalization.
+  [#10988](https://github.com/bytecodealliance/wasmtime/pull/10988)
+
+* The `TE` HTTP header can now be specified by guests.
+  [#11002](https://github.com/bytecodealliance/wasmtime/pull/11002)
+
+* Winch on AArch64 should now pass all WebAssembly MVP tests. Note that it is
+  still not yet Tier 1 at this time, however.
+  [#10829](https://github.com/bytecodealliance/wasmtime/pull/10829)
+  [#11013](https://github.com/bytecodealliance/wasmtime/pull/11013)
+  [#11031](https://github.com/bytecodealliance/wasmtime/pull/11031)
+  [#11051](https://github.com/bytecodealliance/wasmtime/pull/11051)
+
+* The x64 backend now has lowering rules for `{add,sub,or,and} mem, imm`
+  [#11043](https://github.com/bytecodealliance/wasmtime/pull/11043)
+
+* Initial support for WASIp2 in the C API has started to land.
+  [#11055](https://github.com/bytecodealliance/wasmtime/pull/11055)
+  [#11172](https://github.com/bytecodealliance/wasmtime/pull/11172)
+
+* Initial support for GC support in the component model has started to land
+  (note that it is not finished yet).
+  [#10967](https://github.com/bytecodealliance/wasmtime/pull/10967)
+  [#11020](https://github.com/bytecodealliance/wasmtime/pull/11020)
+
+* The `wasmtime-wasi-nn` crate now has a feature to use a custom ONNX runtime.
+  [#11060](https://github.com/bytecodealliance/wasmtime/pull/11060)
+
+* Cranelift now optimizes division-by-constant operations to no longer use
+  division.
+  [#11129](https://github.com/bytecodealliance/wasmtime/pull/11129)
+
+* A `native-tls` backend has been added for the wasi-tls implementation.
+  [#11064](https://github.com/bytecodealliance/wasmtime/pull/11064)
+
 ### Changed
 
+* Many more instructions for the x64 backend in Cranelift were migrated to the
+  new assembler.
+  [#10927](https://github.com/bytecodealliance/wasmtime/pull/10927)
+  [#10928](https://github.com/bytecodealliance/wasmtime/pull/10928)
+  [#10918](https://github.com/bytecodealliance/wasmtime/pull/10918)
+  [#10946](https://github.com/bytecodealliance/wasmtime/pull/10946)
+  [#10954](https://github.com/bytecodealliance/wasmtime/pull/10954)
+  [#10958](https://github.com/bytecodealliance/wasmtime/pull/10958)
+  [#10971](https://github.com/bytecodealliance/wasmtime/pull/10971)
+  [#10942](https://github.com/bytecodealliance/wasmtime/pull/10942)
+  [#10975](https://github.com/bytecodealliance/wasmtime/pull/10975)
+  [#11017](https://github.com/bytecodealliance/wasmtime/pull/11017)
+  [#10898](https://github.com/bytecodealliance/wasmtime/pull/10898)
+  [#10836](https://github.com/bytecodealliance/wasmtime/pull/10836)
+  ... (and more)
+
+* Wasmtime internally uses `Pin` for VM data structures to make the internal
+  implementations more sound to use. This has no effect on the public API of
+  Wasmtime.
+  [#10934](https://github.com/bytecodealliance/wasmtime/pull/10934)
+  [#10937](https://github.com/bytecodealliance/wasmtime/pull/10937)
+  [#10943](https://github.com/bytecodealliance/wasmtime/pull/10943)
+  [#10959](https://github.com/bytecodealliance/wasmtime/pull/10959)
+  [#11042](https://github.com/bytecodealliance/wasmtime/pull/11042)
+
+* Fused adapters between components now transfer the `enum` component model type
+  more efficiently.
+  [#10939](https://github.com/bytecodealliance/wasmtime/pull/10939)
+
+* Filenames of `--emit-clif` now match the symbol names found in `*.cwasm`
+  artifacts and include the function name as well.
+  [#10947](https://github.com/bytecodealliance/wasmtime/pull/10947)
+  [#11040](https://github.com/bytecodealliance/wasmtime/pull/11040)
+
+* Wasmtime-internal crates are now all named `wasmtime-internal-*` to even
+  further discourage their use.
+  [#10963](https://github.com/bytecodealliance/wasmtime/pull/10963)
+
+* Codegen of conditional traps with float compares has been improved.
+  [#10966](https://github.com/bytecodealliance/wasmtime/pull/10966)
+
+* More patterns are now optimized in ISLE mid-end rules.
+  [#10978](https://github.com/bytecodealliance/wasmtime/pull/10978)
+  [#10979](https://github.com/bytecodealliance/wasmtime/pull/10979)
+  [#11173](https://github.com/bytecodealliance/wasmtime/pull/11173)
+
+* Winch's support for constants/scratch registers has been improved internally.
+  [#10986](https://github.com/bytecodealliance/wasmtime/pull/10986)
+  [#10998](https://github.com/bytecodealliance/wasmtime/pull/10998)
+
+* The C API artifacts on Windows are now produced with Clang instead of
+  `cl.exe`.
+  [#10890](https://github.com/bytecodealliance/wasmtime/pull/10890)
+
+* WebAssembly operand types are now taken into account during translation to
+  optimize codegen better in the face of subtyping.
+  [#11030](https://github.com/bytecodealliance/wasmtime/pull/11030)
+
+* The behavior of `blocking-write-and-flush` has been updated during flushing
+  when `closed` is found.
+  [#11018](https://github.com/bytecodealliance/wasmtime/pull/11018)
+
+* WASI WITs have been updated to 0.2.6.
+  [#11049](https://github.com/bytecodealliance/wasmtime/pull/11049)
+
+* OpenVINO has been updated to v2025.1.
+  [#11054](https://github.com/bytecodealliance/wasmtime/pull/11054)
+
+* The size of the `wasmtime.addrmap` section in `*.cwasm` artifacts has been
+  shrunk slightly.
+  [#11126](https://github.com/bytecodealliance/wasmtime/pull/11126)
+
+* Authorities in `wasmtime-wasi-http` can now contain the `:` character.
+  [#11145](https://github.com/bytecodealliance/wasmtime/pull/11145)
+
+* Wasmtime now requires Rust 1.86 to compile.
+  [#11142](https://github.com/bytecodealliance/wasmtime/pull/11142)
+
+* Wasmtime's DRC collector has been optimized and has a new more efficient means
+  of managing the set of over-approximated roots on the stack.
+  [#11144](https://github.com/bytecodealliance/wasmtime/pull/11144)
+  [#11148](https://github.com/bytecodealliance/wasmtime/pull/11148)
+  [#11167](https://github.com/bytecodealliance/wasmtime/pull/11167)
+  [#11168](https://github.com/bytecodealliance/wasmtime/pull/11168)
+  [#11169](https://github.com/bytecodealliance/wasmtime/pull/11169)
+  [#11175](https://github.com/bytecodealliance/wasmtime/pull/11175)
+
+* The `ComponentType` trait in Wasmtime now requires the `Send` and `Sync`
+  bounds for all implementors.
+  [#11160](https://github.com/bytecodealliance/wasmtime/pull/11160)
+
+* The `V128` type is now usable on platforms other than aarch64 and x86\_64.
+  [#11165](https://github.com/bytecodealliance/wasmtime/pull/11165)
+
+* Wasmtime's policy on `unsafe` code and guidelines has been added.
+  [#11177](https://github.com/bytecodealliance/wasmtime/pull/11177)
+
+* The `std` crate will no longer implicitly be used on `cfg(unix)` and
+  `cfg(windows)` targets when the `std` Cargo feature is disabled. This means
+  that these platforms now require `std` to be enabled to use the
+  platform-specific implementation of linear memory, for example.
+  [#11152](https://github.com/bytecodealliance/wasmtime/pull/11152)
+
+### Fixed
+
+* A panic when optimizing `icmp` with vectors has been fixed.
+  [#10948](https://github.com/bytecodealliance/wasmtime/pull/10948)
+
+* A panic when lowering `scalar_to_vector` with `i16x8` types has been fixed.
+  [#10949](https://github.com/bytecodealliance/wasmtime/pull/10949)
+
+* The vector state register is now considered clobbered by calls on riscv64 to
+  ensure it's updated across calls.
+  [#11048](https://github.com/bytecodealliance/wasmtime/pull/11048)
+
+* An instance of `gdb` crashing on DWARF emitted by Wasmtime has been fixed.
+  [#11077](https://github.com/bytecodealliance/wasmtime/pull/11077)
+
 --------------------------------------------------------------------------------
 
 Release notes for previous releases of Wasmtime can be found on the respective