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Re: bb-reorder crashes on potential-fall-through computed jumps
- To: Richard Henderson <rth at redhat dot com>
- Subject: Re: bb-reorder crashes on potential-fall-through computed jumps
- From: Alexandre Oliva <aoliva at redhat dot com>
- Date: 05 Feb 2001 17:33:19 -0200
- Cc: gcc-patches at gcc dot gnu dot org
- Organization: GCC Team, Red Hat
- References: <ork878opq8.fsf@guarana.lsd.ic.unicamp.br><20010205110931.E21066@redhat.com>
On Feb 5, 2001, Richard Henderson <rth@redhat.com> wrote:
> On Fri, Feb 02, 2001 at 05:21:35PM -0200, Alexandre Oliva wrote:
>> The problem is that the subsequent basic block is indeed one of the
>> potential edges, so the jump is considered as a potential fall-through,
>> so we end up crashing.
> That would be incorrect. Only conditional branches have fall-through.
> If we're considering a computed branch to the next block to be fall-
> through we're wrong.
Ok. The first time I met this problem, it was a conditional jump
indeed. This time, I just assumed it was the same problem. I'll
investigate some more.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me