* alias.c: Include ggc.h.
        (reg_base_value, new_reg_base_value, reg_base_value_size): Make static.
        (record_set): Verify enough room in reg_base_value.
        (init_alias_analysis): Allocate reg_base_value with xcalloc.
        Register it as a GC root.
        (end_alias_analysis): Free reg_base_value.  Remove it as a GC root.
        * Makefile.in (alias.o): Depend on ggc.h.

        * unroll.c (unroll_loop): Verify the insn before a barrier
        is a JUMP_INSN before checking JUMP_LABEL.

Co-Authored-By: Richard Henderson <rth@cygnus.com>

From-SVN: r30147