* emit-rtl.c (gen_lowpart_common): Suppress last change if __complex__.
        * emit-rtl.c (hard-reg-set.h): Include.
        (get_lowpart_common): Don't make new REG for hard reg in a
        class that cannot change size.
        * Makefile.in (emit-rtl.o): Depend on hard-reg-set.h.
        * combine.c: Revert previous patch.

Co-Authored-By: Richard Kenner <kenner@vlsi1.ultra.nyu.edu>

From-SVN: r18109