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Re: Don't run PRE at -Os

From: Daniel Berlin <dberlin at dberlin dot org>
To: Mostafa Hagog <MUSTAFA at il dot ibm dot com>
Cc: Andrew Pinski <pinskia at physics dot uc dot edu>, Diego Novillo <dnovillo at redhat dot com>, gcc-patches at gcc dot gnu dot org
Date: Sun, 31 Oct 2004 09:41:40 -0500 (EST)
Subject: Re: Don't run PRE at -Os
References: <OF0781A4D0.7AE6082A-ONC2256F3E.003206B8-C2256F3E.00327EB6@il.ibm.com>

On Sun, 31 Oct 2004, Mostafa Hagog wrote:

gcc-patches-owner@gcc.gnu.org wrote on 28/10/2004 20:37:13:
On Oct 28, 2004, at 2:23 PM, Diego Novillo wrote:
PRE tends to generate bigger code at -Os.  There's a PR associated with
this that was mentioned today on IRC.  I don't recall which was it,
though.
Does this mean that we are disabling also the removal of fully redundant
expressions?

No.
We specifically keep that on at -Os.

References:
- Re: Don't run PRE at -Os
  - From: Mostafa Hagog

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