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A question about mov pattern
- From: Revital1 Eres <ERES at il dot ibm dot com>
- To: gcc at gcc dot gnu dot org
- Date: Thu, 24 Jun 2010 11:02:14 +0300
- Subject: A question about mov pattern
In the new target I'm working on there are branch regs and gprs.
The loads and store instructions are only to/from the gprs, so if a
branch reg needs to be spilled it first needs to be moved to a gpr and
then stored to memory. I've implemented mov pattern in the machine
description file for the gprs and a mov pattern between gprs and branch
regs; however I'm am not sure if I need to add more to model the behavior
described above and if so how to do it.