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: possible gcse failure: not able to eliminate redundant loads

From: Geoff Keating <geoffk at geoffk dot org>
To: Richard Henderson <rth at redhat dot com>
Cc: Daniel Berlin <dberlin at dberlin dot org>, Dale Johannesen <dalej at apple dot com>, "Sanjiv Kumar Gupta, Noida" <sanjivg at noida dot hcltech dot com>, gcc at gcc dot gnu dot org
Date: 12 Dec 2002 15:19:08 -0800
Subject: Re: possible gcse failure: not able to eliminate redundant loads
References: <20021212210010.GD23940@redhat.com><200212122102.QAA22828@makai.watson.ibm.com><20021212222853.GA28987@redhat.com>

Richard Henderson <rth@redhat.com> writes:

> On Thu, Dec 12, 2002 at 04:02:07PM -0500, David Edelsohn wrote:
> > Richard> Both.  We hoist values read-write when we can.
> > 
> > 	GCC should but it doesn't.
> 
> My point exactly.
> 
> We have the code for it, but alias.c isn't helping.

It looks like memrefs_conflict_p is supposed to be able to prove that
a[2] and a[4] don't alias, I wonder why it's not working?

-- 
- Geoffrey Keating <geoffk@geoffk.org>

References:
- Re: possible gcse failure: not able to eliminate redundant loads
  - From: Richard Henderson
- Re: possible gcse failure: not able to eliminate redundant loads
  - From: David Edelsohn
- Re: possible gcse failure: not able to eliminate redundant loads
  - From: Richard Henderson

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