[PATCH] PR 42327: Add checks for sqrt optab being present before doing pow (x, 0.75) optimization

[Paolo Bonzini]

On 12/07/2010 06:38 PM, Michael Meissner wrote:
> 	* builtins.c (expand_builtin_pow_root): Don't optimize pow(x,y)
> 	where y is 0.25, 1./6., or 0.75 if the target does not have a sqrt
> 	instruction, but do optimize if y is 0.5 or 1./6. since that
                                                     ^^^^^

Did you mean 1./3. here?

> 	changes an expensive call into a cheaper one.

Paolo