* flow.c (invalidate_mems_from_autoinc): Rewrite to use for_each_rtx.
        Update prototype and callers.
        (propagate_one_insn): Stack pointer adjustments kill MEMs on
        the mem_set_list which reference the stack pointer, as do
        calls to constant functions as they may clobber outgoing
        argument space.

From-SVN: r53442