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Re: [RFC] PowerPC DFA description
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Daniel Egger <degger at fhm dot edu>
- Cc: Vladimir Makarov <vmakarov at redhat dot com>, dalej at apple dot com, Daniel Berlin <dan at dberlin dot org>, GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 29 May 2002 18:28:57 -0400
- Subject: Re: [RFC] PowerPC DFA description
>>>>> Daniel Egger writes:
Daniel> In contrast to the 7450 which has four AlitVec units (VUI1, VUI2, VFPU
Daniel> and VPU) the 7400 has two units only (VALU and VPU) the former of which
Daniel> having three subunits. Since I couldn't imagine any better way to model
Daniel> that I followed the pattern I though I found in your description by
Daniel> adding a new automaton for the completely seperate vector unit.
That is associating instruction types with function units, not
automata. How many automata per function unit is a different question --
at least the way Red Hat generated the initial description.
David