* tree-ssa-alias.c (walk_aliased_vdefs_1): Add FUNCTION_ENTRY_REACHED
	parameter.
	(walk_aliased_vdefs): Likewise.
	* tree-ssa-alias.h (walk_aliased_vdefs): Likewise.
	* ipa-prop.c (stmt_may_be_vtbl_ptr_store): Skip clobbers
	(detect_type_change_from_memory_writes): Check if entry was reached.

From-SVN: r212351