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How to tell reload to properly store a register?
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: GCC Development <gcc at gcc dot gnu dot org>
- Date: Sat, 30 Apr 2011 05:51:54 -0700
- Subject: How to tell reload to properly store a register?
My target needs a scratch register to store a register in one register class
and it needs to use memory to copy from one register class to another.
I have store and reload_out patterns for those registers. When reload
tries to copy data from one register class to another, it just stores the
register without using the proper reload_out pattern which has a scratch
register.
How can I tell reload to always use a scratch register when storing a
register?
Thanks.
--
H.J.