The patch was successfully bootstrapped on x86-64 and ppc64.
Committed as rev 177874.
2011-08-18 Vladimir Makarov <vmaka...@redhat.com>
PR rtl-optimization/49890
* ira-costs.c (setup_regno_cost_classes_by_aclass): Don't exclude
subclasses of class which is superset of a pressure class.
