Re: adding a new register type to i386.h, and add spill/fill support

[Tyler Anderson <tyleranderson5 at yahoo dot com>]

I've gotten much further. I've added the new register
type to just about everywhere I can think of.

Then I was getting a cannot find a spill register
error.

Any thoughts?
Tyler


--- Ian Lance Taylor <ian@airs.com> wrote:

> Tyler Anderson <tyleranderson5@yahoo.com> writes:
> 
> > I've already added the new type to i386.h,
> however, I
> > think I'm missing something in the #define
> > REG_CLASS_CONTENTS section. Could anyone point me
> to
> > more documentation about what each bit means? We
> need
> > to add a new register type, and extend the # of
> > existing registers. Extending the # of a register
> > seems easy, but it's unclear to me if it has been
> done
> > right since I don't know what each bit set in the
> > REG_CLASS_CONTENTS define is.
> 
> Well, there is documentation in the internals
> manual, of course.
> 
> Each bit in each entry in REG_CLASS_CONTENTS
> corresponds to a
> particular register.  Which register it means is
> target specific, but
> you can figure it out based on, e.g.,
> REGISTER_NAMES.  For example,
> for the i386, bit 0 is ax, bit 1 is dx, etc.
> 
> Ian
> 



		
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