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From: John Baldwin <jhb@freebsd.org>
To: Edward Tomasz Napierala <trasz@freebsd.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: Re: svn commit: r316486 - head/sys/mips/mips
Date: Tue, 04 Apr 2017 09:20:34 -0700
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On Tuesday, April 04, 2017 08:17:03 AM Edward Tomasz Napierala wrote:
> Author: trasz
> Date: Tue Apr  4 08:17:03 2017
> New Revision: 316486
> URL: https://svnweb.freebsd.org/changeset/base/316486
> 
> Log:
>   Remove dead code/ifdef.
>   
>   MFC after:	2 weeks
>   Sponsored by:	DARPA, AFRL

I'm not quite sure how dead this.  We do reserve space in 'struct reg'
for IC in regnum.h:

/*
 * IC is valid only on RM7K and RM9K processors. Access to this is
 * controlled by IC_INT_REG which defined in kernel config
 */
#define IC      38

OTOH, I can't find other references to IC outside of regnum.h and what
you just removed.

-- 
John Baldwin