[tree-ssa] Don't return but abort() in tree-ssa-ccp on non-GIMPLE with checking enabled

[law@redhat.com]

In message <1055775713.3322.64.camel@frodo.toronto.redhat.com>, Diego Novillo w
rites:
 >On Sun, 2003-06-15 at 18:31, Steven Bosscher wrote:
 >
 >> Bootstrapped C/C++ on i686-pc-cygwin.  Not really obvious because I 
 >> don't know the history of
 >> this check, so... OK?
 >> 
 >Yes, but the check was not needed anyway.  It's a remnant from old
 >code.  Statements that are not in GIMPLE form will not have any real
 >operands for CCP to deal with.   I will be committing a couple of
 >modifications to CCP that get rid of this testing altogether.
Thanks for clarifying the current state of the world.  Consider my
concerns regarding asms and backend builtins a non-issue.

jeff