Re: disabled JIT compiler for cpu with no sse2 support
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- Subject: Re: disabled JIT compiler for cpu with no sse2 support
- From: Pan Shi Zhu <pan.shizhu@...>
- Date: Fri, 5 Mar 2010 16:06:17 +0800
>
> , as many other embedded cpu do not suport sse instructions
>
This is true, but they do not support x87 instructions too. (like all
ARM cpus and MIPS cpus who does not have hardware floating-point
support at all)
I'd say 99% embedded cpus support sse or have no hardware
floating-point support at all.
The fact is we could use integer as lua number and avoid
floating-point operations, I don't know if LuaJit works under this
condition without sse, but I think this is a definitely useful
feature: support non-sse CPU when lua number is integer.