Predefined Version expansion
Dan
murpsoft at hotmail.com
Mon Apr 2 14:18:09 PDT 2007
Walter Bright Wrote:
> > Predefining those so that compiler writers can raise errors if they don't yet support SSE3 instructions, but they do support x86 and MMX, would be a smart thing to do. It would also allow implementors to write code that WON'T compile and try to run if the user's CPU doesn't support it - preventing what could be a devastating crash.
>
> The inline assembler does support all the SSE3 instructions, etc.
Yes, the GDC and DMD implementations support all the SSE3 instructions, but someone with a i486 Pentium Pro does not, and neither might another D implementation implementing the D language spec.
When I use an SSE3 instruction in D, is it going to raise an error if the person's system is only a Pentium Pro?
If that could be done by checking the CPU support for each instruction implicitly, then it would be even better than versioning it all off... but I don't think that's the case - and it's not specified?
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