On 9/12/23 17:58, Nicholas Piggin wrote:
This is a bit of churn so I might leave it for later in the cycle (or
defer if we get a lot of other changes) since it's a relatively
mechanical change. So don't spend time reviewing details, I'm just
wondering about concept and general approach.
I'm not sure the history of why these are 32-bit, maybe better code gen
on 32-bit host emulating 64-bit? If so, that shouldn't be so important
now that most people use 64-bit systems to develop and test with.
It was probably in order to save space, but I have no specific knowledge.
What does this do to the generated code? I suspect, without looking, that it doesn't
change things much at all on e.g. a ppc64 host, and for an x86_64 host merely changes the
types of some instructions (which, considering the rex64 encoding, might consume a few
more bytes).
r~
