condition codes, haifa-sched and virtual-stack-vars

[Richard Henderson]

On Wed, Jan 30, 2002 at 10:41:43PM +0100, Ulrich Weigand wrote:
> On s390, while we do have a load-address pattern, it is somewhat
> restricted (e.g. it accepts only immediate offsets in the 0..4095
> range).  I've tried to trick reload into using LA anyway, by 
> providing a generic 'add' pattern and splitters to massage the
> result into a form acceptable by LA afterward.

On i386 we have a peephole2 that converts lea to add if the
flags register is dead.


r~