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Re: Delete moves that are turned into no-ops by reload_cse

From: Bernd Schmidt <bernds_cb1 at t-online dot de>
To: gcc-patches at gcc dot gnu dot org, stevenb dot gcc at gmail dot com, richard at codesourcery dot com
Date: Mon, 27 Feb 2006 16:24:16 +0100
Subject: Re: Delete moves that are turned into no-ops by reload_cse
References: <87d5h8yguj.fsf@talisman.home>

Richard Sandiford wrote:

As well as doing CSE, reload_cse has code to delete no-op moves.
What's slightly odd is that this code is skipped for moves that
were simplified by CSE itself.

This patch fixes that.  I checked that postreload now removes the
no-op that Steven described here:

http://gcc.gnu.org/ml/gcc/2006-02/msg00650.html

Shouldn't we rather find out why inheritance is broken?

Bernd

Follow-Ups:
- Re: Delete moves that are turned into no-ops by reload_cse
  - From: Richard Sandiford

References:
- Delete moves that are turned into no-ops by reload_cse
  - From: Richard Sandiford

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