cse patch to not extend hard reg lifetimes in bad situations
Bernd Schmidt
bernds@redhat.com
Tue Jul 3 03:29:00 GMT 2001
On Mon, 2 Jul 2001, Geoffrey Keating wrote:
> The port is not SMALL_REGISTER_CLASSES because it actually has lots of
> general registers, only a few instructions have really small register
> choices.
This is precisely the situation where you want SMALL_REGISTER_CLASSES to
be defined. It doesn't matter how many registers there are, if one class
is small enough to cause problems like this you need to define this macro.
Bernd
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