re PR tree-optimization/45580 (Building WebKit fails with compiler catching SIGSEGV in gimple_fold_obj_type_ref_known_binfo())

2010-09-21  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/45580
	* tree-ssa-propagate.c (substitute_and_fold): Always replace
	regular uses.
	* gimple-fold.c (gimple_fold_obj_type_ref): For a BINFO without
	virtuals fold the call into a regular indirect one.

	* g++.dg/torture/pr45580.C: New testcase.

From-SVN: r164474