Commits on Jun 27, 2022

1. Cranelift/x64: fix register allocator metadata for 8-bit divides. …

   `idiv` on x86-64 only reads `rdx`/`edx`/`dx`/`dl` for divides with width
   greater than 8 bits; for an 8-bit divide, it reads the whole 16-bit
   divisor from `ax`, as our CISC ancestors intended. This PR fixes the
   metadata to avoid a regalloc panic (due to undefined `rdx`) in this
   case. Does not affect Wasmtime or other Wasm-frontend embedders.

   

   cfallin committed Jun 27, 2022
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