Re: [PATCH] Implement switch statements with bit tests

["Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>]

 > From: Roger Sayle <roger@www.eyesopen.com>
 > 
 > I believe that we already have testsuite entries containg suitable
 > switch statements that would have failed if I'd screwed things up.
 > 
 > This is in addition to the 230+ switch statements that have to be
 > implement correctly to complete a GCC bootstrap, and the 5100+
 > corner cases that we need to determine must be implemented using
 > another method, and ignore. :>
 > Roger

True.  However some targets are not meant for bootstrapping,
e.g. cross-only targets.  If you build them with say gcc-2.95.x,
you'll never be alerted to the fact that switches specifically may be
broken in the resulting compiler (for just that config) by your patch
and it'll be a lot harder to track down.

Plus like I said, it'll help allay (prevent!) all the concerns raised
if you can say, "the testcase I wrote has your corner case and still
passes."

You're not still gun-shy because of 20020720-1.c are you? :-)
I'm *not* saying you need to verify the opt is performed on all
targets, just that correct code if produced.

--
Kaveh R. Ghazi			ghazi@caip.rutgers.edu