Wasmtime GitHub notifications bot (Dec 11 2020 at 17:40): Wasmtime GitHub notifications bot (Dec 11 2020 at 17:40):bjorn3 commented on Issue #2496:
The problem here as far as I understand it is that for 8bit operations there are registers for which it is not allowed to omit the rex prefix even if a plain rex prefix without any bits set is used. Normally the
rexprefix would be considered as unused in this case. In any case using the 32bit variant avoids a potential partial register stall.
Wasmtime GitHub notifications bot (Dec 11 2020 at 18:45):abrown commented on Issue #2496:
Honestly, it is probably too much work (on legacy code) to change the
infer_rexstuff to understand which registers need REX prefixes for this specific instruction but I'll leave it up to @bnjbvr.
Last updated: Dec 23 2024 at 12:05 UTC