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[Bug tree-optimization/15524] [4.0 Regression] jump threading on trees is slow with switch statements with large # of cases
- From: "law at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 20 Nov 2004 20:39:26 -0000
- Subject: [Bug tree-optimization/15524] [4.0 Regression] jump threading on trees is slow with switch statements with large # of cases
- References: <20040518194300.15524.pinskia@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From law at redhat dot com 2004-11-20 20:39 -------
Subject: Re: [4.0 Regression] jump threading
on trees is slow with switch statements with large # of cases
On Sat, 2004-11-20 at 21:33 +0100, Eric Botcazou wrote:
> > [ Yes, I got the message regarding the bootstrap comparison failure
> > on darwin. I'm going to try and reproduce it on a relatively old
> > PPC box here. It'll take quite some time though. I do plan on
> > flushing out one more patch while my PPC bootstrap is running. ]
>
> There are problems on x86_64, SPARC, PowerPC and i686, see the PR.
I haven't seen the comparison failure on i686 -- if I had I never
would have checked in the patch. PPC is the only other kind of box
I have here locally.
There's some other approaches I can (and will) try while the PPC
box is doing its thing.
jeff
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15524