[PATCH] Fast-math fold: x / (y * sqrt(z)) -> x * rsqrt(z) / y

[Bill Schmidt]

Sorry to hear about nonresponsiveness from the compile farm.  You should usually be able to find Laurent Guerby on irc.oftc.net #gcc as "guerby" -- you may want to ping him directly that way.

http://reviews.llvm.org/D5628