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Re: [PATCH] Make CSE path following use the CFG
"Steven Bosscher" <stevenb.gcc@gmail.com> writes:
> On 12/11/06, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
>> Fortunately, there appears to be a more serious problem than the typo.
>
> And another one, where I intended to traverse the CFG in topological
> sort, and I actually asked for a DFS sort.
>
>> For CC0-targets, we clear prev_insn_cc0 too early now. I've hacked
>> together the attached patch, but I can't test it right now (0:00 AM,
>> work tomorrow, etc.). I wanted to post it anyway because maybe it
>> helps people forward, and maybe someone can help me by testing this on
>> a CC0-target;-)
>
> The patch below *should* fix both the CC0 problems and the HPPA/MIPSEL
> problems. I have built an AVR cross-compiler with this, and I have
> verified that the test case from PR30149 does not ICE anymore with
> this patch. I have asked for some assistance to have this patch
> bootstrapped&tested properly.
FWIW, the original cc0 patch seemed to work great on a locally-modified
m68k tree. Thanks for the quick fix.
Richard