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Re: Question on scalar replacement

From: Diego Novillo <dnovillo at redhat dot com>
To: Richard Henderson <rth at redhat dot com>
Cc: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>, Jason Merrill <jason at redhat dot com>
Date: Mon, 14 Jun 2004 13:43:19 -0400
Subject: Re: Question on scalar replacement
Organization: Red Hat Canada
References: <10406141407.AA05618@vlsi1.ultra.nyu.edu> <1087222653.22679.69.camel@localhost.localdomain> <20040614173950.GA28116@redhat.com>

On Mon, 2004-06-14 at 13:39, Richard Henderson wrote:
> On Mon, Jun 14, 2004 at 10:17:34AM -0400, Diego Novillo wrote:
> > Jason, is a.f = foo() valid GIMPLE?  If not, then the bug is in the
> > gimplifier.  Otherwise, the patch I sent should be OK.
> 
> We can do better than your patch.  If is_sra_candidate_ref, we
> can scalarize 
> 
> 	s.f = foo()
> 
> to 
> 
> 	SR.105 = foo()
> 
> rather than
> 
> 	s.f = foo()
> 	SR.100 = s.a;
> 	SR.101 = s.b;
> 	SR.102 = s.c;
> 	SR.103 = s.d;
> 	SR.104 = s.e;
> 	SR.105 = s.f;
> 
> 
Huh?

References:
- Re: Question on scalar replacement
  - From: Richard Kenner
- Re: Question on scalar replacement
  - From: Diego Novillo
- Re: Question on scalar replacement
  - From: Richard Henderson

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