Wasmtime GitHub notifications bot (Oct 16 2023 at 16:44): Wasmtime GitHub notifications bot (Oct 16 2023 at 16:44):github-actions[bot] commented on issue #7252:
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Wasmtime GitHub notifications bot (Oct 17 2023 at 15:06):alexcrichton commented on issue #7252:
I'm not sure if these are really all that common enough in practice to warrant new CLIF instructions, especially given that the lowerings aren't too bad to have, but it's also true though that if every platform has a variation of this then it might be reasonable to add.
I do think though that the suite of instructions on x64 is different than on riscv64, for example riscv64 has more immediate-related instructions because on x64 you can fit an entire 32-bit immediate into an instruction but you can't do that on riscv64. That means that
bclriis motivated on riscv64 (or at least that's my inference as to the assumption), whereas on x64 there's only thebclrequivalent (or roughly speaking I think)
Last updated: Dec 23 2024 at 13:07 UTC