Different classes for base registers

[Rask Ingemann Lambertsen]

On Tue, May 29, 2007 at 03:56:38PM +0300, Tal Agmon wrote:
> Hi,
> 
> I'm working on a new target port in which there are different base
> registers 
> allowed depending on the offset:
> r0-r7 are allowed as base register only when the offset is zero.
> r6-r7 are allowed as base register for every offset.

   I think a new macro along the lines of MODE_CODE_BASE_REG_CLASS might do
the trick.

   Perhaps this family of macros needs to be cleaned up, so you have:

RTX_BASE_REG_CLASS(x)
RTX_INDEX_REG_CLASS(x)

where x is the address expression as an RTX.

-- 
Rask Ingemann Lambertsen