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Re: [3.3/mainilne] Fix kernel misscopmiilation for hammer
- From: Richard Henderson <rth at redhat dot com>
- To: Jan Hubicka <jh at suse dot cz>, gcc-patches at gcc dot gnu dot org
- Date: Thu, 3 Apr 2003 12:24:21 -0800
- Subject: Re: [3.3/mainilne] Fix kernel misscopmiilation for hammer
- References: <20030225224532.GC30993@kam.mff.cuni.cz> <20030225224749.GA13285@redhat.com> <20030225225021.GD30993@kam.mff.cuni.cz> <20030225225133.GC13285@redhat.com> <20030226110629.GA14922@kam.mff.cuni.cz> <20030226171444.GA22942@redhat.com> <20030226193740.GK27482@kam.mff.cuni.cz> <20030304013821.GS12472@redhat.com> <20030403200627.GT19620@kam.mff.cuni.cz> <20030403201922.GB29525@redhat.com>
On Thu, Apr 03, 2003 at 12:19:22PM -0800, Richard Henderson wrote:
> On Thu, Apr 03, 2003 at 10:06:27PM +0200, Jan Hubicka wrote:
> > Did you had chance to look into this?
>
> http://gcc.gnu.org/ml/gcc-patches/2003-03/msg00353.html
Actually, I take that back. I remember now why the one matched
and the other didn't. Volatile memories are not re-recognized
unless volatile_ok is true. Which it isn't during combine.
Your movabs patterns effectively ignore the MEM, and so don't
get rejected as they do with the preceeding movsi patterns.
r~