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2009-06-19 Richard Guenther <rguenther@suse.de> * tree-ssa-alias.c (ptr_deref_may_alias_decl_p): Handle ADDR_EXPR pointers. (ptr_derefs_may_alias_p): Likewise. (ptr_deref_may_alias_ref_p_1): New function. (ptr_deref_may_alias_ref_p): Likewise. (ref_maybe_used_by_call_p_1): Handle builtins that are not covered by looking at the ESCAPED solution. (call_may_clobber_ref_p_1): Likewise. * tree-ssa-structalias.c (get_constraint_for_ptr_offset): Handle NULL_TREE offset. Do not produce redundant constraints. (process_all_all_constraints): New helper function. (do_structure_copy): Use it. (handle_lhs_call): Likewise. (find_func_aliases): Handle some builtins with pointer arguments and/or return values explicitly. * gcc.c-torture/execute/20090618-1.c: New testcase. From-SVN: r148718
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