re PR tree-optimization/55260 (ICE: in ipa_get_parm_lattices, at ipa-cp.c:263 with -O2 -fno-inline -fipa-cp-clone)

2012-11-21  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/55260
	* ipa-cp.c (intersect_aggregates_with_edge): New function.
	(find_aggregate_values_for_callers_subset): Part moved to the function
	above.  Call it.
	(cgraph_edge_brings_all_agg_vals_for_node): Reimplemented using
	intersect_aggregates_with_edge.

	* testsuite/g++.dg/torture/pr55260-2.C: New test.

From-SVN: r193700