[PATCH] MIPS32 DSP instructions again

[Eric Christopher]

> 10 new operand formats, 3, 4, 5, 6, 7, 8, 9, 0, ', :.  These
> new DSP instructions are considered as part of the MIPS32
> instructions, so there is no gas flag to enable or disable them.

I've not looked at the rest, but I'm not sure that this part is
acceptable. What you're saying is that these aren't part of any
particular ASE, but also weren't part of the core description that was
published back in 99 or so? I don't think that we should allow
instructions to be assembled for any core that doesn't support them.
Since, IIRC, there are extant MIPS32 parts out in the world that means
we'll need a switch for this.

Your thoughts?

-eric