[Bug tree-optimization/55016] request for specific builtins for rcp and rsqrt

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55016

--- Comment #2 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 2012-10-23 05:19:37 UTC ---
For the application I have in mind a global flag will such as -ffaster-math
will not be suitable
as it would affect also places where full "single precision" is still required.
I would like just to profit of the rcp and rsqrt instructions for cases where
their low "precision" is enough.