From mboxrd@z Thu Jan  1 00:00:00 1970
From: jtc@redback.com (J.T. Conklin)
To: Jim Blandy <jimb@zwingli.cygnus.com>
Cc: Michael Elizabeth Chastain <chastain@cygnus.com>, gdb-patches@sources.redhat.com
Subject: Re: [RFA] Revised C++ ABI abstraction patches
Date: Thu, 15 Mar 2001 11:35:00 -0000
Message-id: <5mae6mu8pc.fsf@jtc.redback.com>
References: <200103151850.KAA30796@bosch.cygnus.com> <nplmq63lb6.fsf@zwingli.cygnus.com>
X-SW-Source: 2001-03/msg00246.html

>>>>> "Jim" == Jim Blandy <jimb@zwingli.cygnus.com> writes:
Jim> And besides, function calls are so slow.  Remember, GDB's performance
Jim> matters a lot --- it's used to debug real-time operating systems!
Jim> :(

I don't know whether you're being facetious, but IMHO avoiding
function call overhead is not a good argument for making a piece of
code a macro instead of a function.  I've seen many circumstances
where macros (or inlined functions) decrease the overall performance
of a system because the added code results in i-cache thrashing.

I think we should be addressing performance problems that are the
result of poor algorithms rather than spending any time bothering
with microoptimizations.

        --jtc

-- 
J.T. Conklin
RedBack Networks