Re: Unify gcse and cse exp{r,}_equiv_p functions

[Paolo Bonzini <bonzini at gnu dot org>]

> If the extra argument really bothers you, we could also just unify
> all the validate, equal_values, and for_gcse arguments and turn them
> into flags.

No, what bothers me is that there are already a lot of functions that 
are like "do some check and then recurse looking at the RTL code 
format".  I don't see much convenience in unifying two of these 
functions, if the way you do it is simply to a flag that picks one of 
two checks.

But since you do not like the hook-based solution and you wrote the 
original patch, it is my duty to profile this alternative solution and 
post a proper patch. :-)

Paolo