linux-kernel - Re: [PATCH] arch/sparc: Avoid DCTI Couples

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Message-Id: <20170310.153316.617706828550364653.davem@davemloft.net>
Date:   Fri, 10 Mar 2017 15:33:16 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     babu.moger@...cle.com
Cc:     rob.gardner@...cle.com, khalid.aziz@...cle.com,
        allen.pais@...cle.com, viro@...iv.linux.org.uk,
        sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arch/sparc: Avoid DCTI Couples

From: Babu Moger <babu.moger@...cle.com>
Date: Fri, 10 Mar 2017 15:47:03 -0700

> Avoid un-intended DCTI Couples. Use of DCTI couples is deprecated.
> Refer UltraSPARC Architecture 2005(Section 6.3.4.7 - DCTI Couples).
> http://www.oracle.com/technetwork/systems/opensparc/1537734

An annulled branch-always has no delay slot.

These code sequences are intentional to keep code size down.

I'm not applying this.