Download Wasmtime 31.0.0

31.0.0
Released 2025-03-20.
Added
- Winch's implementation of the SIMD proposal for WebAssembly is now
feature-complete (but still being fuzzed).
#10180
#10170
#10203
#10202
#10210
#10213
#10224
#10205
#10226
#10228
#10236
#10241
#10243
#10247
#10271
#10284
#10288
#10296
- The pytorch implementation in wasmtime-wasi-nn now has GPU support.
#10204
- Cranelift now supports emitting the AArch64 extr instruction.
#10229
- Cranelift now supports emitting the x64 shld instruction.
#10233
- Initial support for the stack-switching proposal has started to land, but it
is not complete just yet.
#10251
#10265
#10255
Changed
- Pulley's implementation of loads/stores to linear memory has changed to
better support optimizations and reduction of interpreter opcodes in the
final binary.
#10154
- Cranelift's verifier now ensures that integers used as address types have the
correct width.
#10209
- Wasmtime and Cranelift's minimum supported version of Rust is now 1.83.0.
#10264
- Wasmtime now mentions the filename when the input cannot be opened on the CLI.
#10292
- All types are now generated in component::bindgen!, even if they're not
reachable.
#10311
- Tables allocated with the system allocator now use alloc_zeroed (aka
calloc) for allocation.
#10313
Fixed
- GC: the is-null-or-i31ref checks have been fixed.
#10221
- GC: an incorrect assertion and canonicalized types for runtime usage has been
fixed.
#10223
- GC: subtype checks for imported globals during instantiation have been fixed.
#10304
- GC: exposing references to wasm in the gc_alloc_raw libcall has been fixed.
#10322
- Winch's fuel checks correctly sync fuel before the check now.
#10231
- Winch's treatment of stores and other trapping ops has been fixed on AArch64.
#10201
- Winch's handling of the shadow stack pointer has been fixed on AArch64.
#10263
- Winch's handling of address calculations has been fixed on AArch64.
#10297
- Winch's handling of multivalue return of constants has ben fixed.
#10315