[PATCH] Recognize sqrt(1.0/x) as rsqrt.d on MIPS4

[Eric Christopher]

> 
> Ok for mainline?
> 
> 
> 2004-08-09  Roger Sayle  <roger@eyesopen.com>
> 
> 	* config/mips/mips.md: New reciprocal square root patterns that
> 	match sqrt(1.0/x) in addition to the existing 1.0/sqrt(x) insns.

OK. I assume you also matched it with a testcase to prove that it was
generated right? :)

-eric

-- 
Eric Christopher <echristo@redhat.com>