Re: [patch] ppc ccX splitters

[Clinton Popetz <cpopetz at cygnus dot com>]

On Mon, Feb 21, 2000 at 09:39:30PM -0300, Horst von Brand wrote:
> Michael Meissner <meissner@cygnus.com> said:
> > On Mon, Feb 21, 2000 at 09:05:25AM -0600, Clinton Popetz wrote:
> 
> > > This is all done with a perl script (which I can provide to anyone that
> > > is interested.)  It matched 170 patterns, which means we have 170 new
> > > splits.  There were three insns for which I had to modify the output
> > > template by hand, as they were C code.  Also, I had to fix the
> > > anddi3_internal{2,3} cases by hand, since there is no andi (only andi.)
> 
> > I can attest to the fact that if you do the 170 patterns by hand as I
> > originally did, somewhere around pattern 150 you accidently put in %4
> > when you meant %5.  Good work with the perl script.
> 
> In that case, I'd vote for generating (this part of) the .md file from
> templates by this script (or a variant). As things stand, if one of both
> alternatives gets fixed, the other one surely won't be...

I agree that this really needs templatizing, but after talking to Jeff Law, I'm
not convinced there's a way to automate this within the current system.  I
think it's a bad idea to maintain the md file and the script in it's current
state, as the latter is too dependent on long term stability of the regexen I
hacked together.

What would be nice is to have a preprocessing step that expanded the md file
before the gen* saw it.  In this particular case, we could automate the
addition of the ?y alternatives, and the generation of the splits.  

If this is considered a useful long term direction, I can try to come up with a
syntax for it.

				-Clint