This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: alias slowdown?

From: "Daniel Berlin" <dberlin at dberlin dot org>
To: "Andrew MacLeod" <amacleod at redhat dot com>
Cc: "gcc mailing list" <gcc at gcc dot gnu dot org>
Date: Fri, 17 Nov 2006 22:19:06 -0500
Subject: Re: alias slowdown?
References: <1163784126.3253.35.camel@localhost.localdomain> <1163786984.3253.38.camel@localhost.localdomain>

On 11/17/06, Andrew MacLeod <amacleod@redhat.com> wrote:

On Fri, 2006-11-17 at 12:22 -0500, Andrew MacLeod wrote:
> I just tried compiling cplusplus_grammer.ii with mainline, checking
> disabled, and had to stop it after 30 minutes (use to be <50 seconds on
> my x86-linux box).  A quick check with GDB seems to show that its
> spending in inordinate amount of time in may_alias:


We used to basically say all of these cases pointed to everything and
anything, and collapse them very quickly.
Now we compute  a correct set of aliases and escaped variables
It takes a while in huge cases like this.
I'm working on fixing it.

Follow-Ups:
- Re: alias slowdown?
  - From: Andrew MacLeod

References:
- alias slowdown?
  - From: Andrew MacLeod
- Re: alias slowdown?
  - From: Andrew MacLeod

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]