Use predicates for RTL objects

[Arvind Sankar]

On Thu, Aug 08, 2019 at 03:04:53PM +0000, Michael Matz wrote:
> Hi,
> 
> On Wed, 7 Aug 2019, Arvind Sankar wrote:
> 
> > 	=> x->is_a (REG)
> 
> Oh god, please no.  Currently at least the RTL parts of GCC still have 
> mostly a consistent and obvious style, which is a good thing.  I have no 
> idea why anyone would think the above is easier to read than REG_P (x).
> 
> 
> Ciao,
> Michael.
> P.S: Consider this: the current style served us quite well for the last 35 
> or so years, so before suggesting style changes, shouldn't you first work 
> on the sources for some time?

Well, the main point of the email was to ask for review of a patchset
that attempts to make progress on a TODO that has been outstanding for
at least 15 of those 35 years.