jump.c (jump_optimize): Use side_effects_p & may_trap_p instead of rtx_unsafe_p.

jump.c (jump_optimize): Use side_effects_p & may_trap_p instead of rtx_unsafe_p.

        * jump.c (jump_optimize): Use side_effects_p & may_trap_p instead
        of rtx_unsafe_p.  Use modified_between_p instead of reg_set_between_p.
        Allow FP moves to be optimized.
        (rtx_unsafe_p): Delete.

From-SVN: r20770