http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59429
--- Comment #10 from Jeffrey A. Law <law at redhat dot com> --- So if you go into a cascaded if-else form, don't we have to recover the COND_EXPR form to get good code? Remember, that to get good code here, we need to discover a non-branching form of one (or more) COND/COND_EXPR expressions and we'd really like to avoid arithmetic in that non-branching form. ie, do a comparison and use the result after casting it from a bool to a suitable integer type. So I guess whatever form we want ought to be driven by which is easier to analyze/rewrite into a COND_EXPR form that will be expanded into a setcc insn without any arithmetic on the result.
