41e87a2f99
* this requires upgrading to wasmparser 0.67.0. * There are no CLIF side changes because the CLIF `select` instruction is polymorphic enough. * on aarch64, there is unfortunately no conditional-move (csel) instruction on vectors. This patch adds a synthetic instruction `VecCSel` which *does* behave like that. At emit time, this is emitted as an if-then-else diamond (4 insns). * aarch64 implementation is otherwise straightforwards.
This is the wasmtime-environ crate, which contains the implementations
of the ModuleEnvironment and FuncEnvironment traits from
cranelift-wasm. They effectively
implement an ABI for basic wasm compilation that defines how linear memories
are allocated, how indirect calls work, and other details. They can be used
for JITing, native object files, or other purposes.