* config/v850/v850.c (v850_reorg): Only call alter_subreg on
	REG or MEM subregs, pass rtx * instead of rtx to it.
	* config/i860/i860.c (output_delayed_branch, output_delay_insn): Pass
	rtx * instead of rtx to alter_subreg.
	* config/m32r/m32r.c (gen_split_move_double): Likewise.
	* config/pj/pj.c (pj_output_rval): Likewise.

From-SVN: r51182