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- Subject: Re: LuaJIT and SSE2
- From: Mike Pall <mikelu-1006@...>
- Date: Fri, 18 Jun 2010 12:43:33 +0200
Peter Harris wrote:
> I disabled the check for SSE2 on my SSE machine (Pentium-3), and
> LuaJIT seemed to run fine in my (extremely limited) test. Depending on
> just how old Petri's "older AMD setup" is, it may have SSE.
Don't do that. It will crash on the first JIT-compiled function
that uses some floating-point op.
> Does LuaJIT use much SSE2 that isn't in SSE? I seem to recall SSE2
> added mostly integer operations, and a few cache prefetch type
> instructions, but not so much in the way of floating point
Wrong. SSE only supports single-precision floats, which is not