Reload patch to improve 386 code

Joern Rennecke
Sat Sep 5 15:49:00 GMT 1998

> We actually have most of the stuff to implement this now.  We just need
> to set the alias set for such MEMs so that they have a different set
> than all the MEMs created before reload.

It's not quite that simple.  You also have to know that different stack
slots don't alias each other.

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