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Because the smallest Wasm scalar type is i32, users of the `i8x16.replace_lane` and `i16x8.replace_lane` instructions will only be able to pass `i32` values as operands. These values must be reduced by dropping the upper bits (see https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md#replace-lane-value) using Cranelift's `ireduce` instruction.
This crate performs the translation from a wasm module in binary format to the in-memory form of the Cranelift IR.
If you're looking for a complete WebAssembly implementation that uses this library, see Wasmtime.