From: Richard Henderson <rth@redhat.com>
To: Paolo Bonzini <paolo.bonzini@lu.unisi.ch>
Cc: Leehod Baruch <LEEHOD@il.ibm.com>, GCC Development <gcc@gcc.gnu.org>
Subject: Re: Question about merging two instructions.
Date: Mon, 22 Aug 2005 16:30:00 -0000 [thread overview]
Message-ID: <20050822163037.GA31598@redhat.com> (raw)
In-Reply-To: <4309D517.7040106@lu.unisi.ch>
On Mon, Aug 22, 2005 at 03:37:27PM +0200, Paolo Bonzini wrote:
> It may still make sense changing the default case of
> simplify_replace_rtx to invoke replace_rtx rather than returning x. But
> this is unrelated, because nobody is currently passing a SET to
> simplify_replace_rtx (only expressions), and you should do the same:
> *you* said you want to replace on the RHS, so you really want to invoke
> simplify_replace_rtx on the RHS.
Agreed. If you're concerned about the LHS, use reg_overlap_mentioned_p
and abort the optimization.
r~
next prev parent reply other threads:[~2005-08-22 16:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-21 13:52 Leehod Baruch
2005-08-21 16:55 ` Roger Sayle
2005-08-21 17:54 ` Leehod Baruch
2005-08-22 7:38 ` Paolo Bonzini
2005-08-22 13:33 ` Leehod Baruch
2005-08-22 13:37 ` Paolo Bonzini
2005-08-22 16:30 ` Richard Henderson [this message]
2005-08-22 13:49 ` Roger Sayle
2005-08-22 7:10 ` Paolo Bonzini
2005-08-22 14:12 ` Leehod Baruch
2005-08-22 14:42 ` Paolo Bonzini
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