contrib/gcc/loop-iv.c

168 lowpart_subreg (enum machine_mode outer_mode, rtx expr,
171   return simplify_gen_subreg (outer_mode, expr, inner_mode,
172 			      subreg_lowpart_offset (outer_mode, inner_mode));
599 		enum rtx_code *extend, enum machine_mode outer_mode,
641       if (GET_MODE (rhs) != outer_mode)
653 	  if (GET_MODE (SUBREG_REG (op0)) != outer_mode)
662       if (GET_MODE (rhs) != outer_mode)
682       if (GET_MODE (nextr) != outer_mode)
700       *inner_mode = outer_mode;
704 			    inner_step, inner_mode, extend, outer_mode,
716       *inner_step = simplify_gen_binary (PLUS, outer_mode,
730       if (*inner_mode == outer_mode
732 	  || GET_MODE (rhs) != outer_mode)
733 	*inner_step = simplify_gen_binary (code, outer_mode,
736 	*outer_step = simplify_gen_binary (code, outer_mode,
766 	      enum machine_mode *outer_mode, rtx *outer_step)
768   *outer_mode = GET_MODE (reg);
771 		       inner_step, inner_mode, extend, *outer_mode,
775   gcc_assert ((*inner_mode == *outer_mode) != (*extend != UNKNOWN));
776   gcc_assert (*inner_mode != *outer_mode || *outer_step == const0_rtx);
826   enum machine_mode inner_mode, outer_mode;
863 		     &outer_mode, &outer_step))
870      where es means extend of subreg between inner_mode and outer_mode.
875   iv->base = simplify_gen_binary (MINUS, outer_mode, def, outer_step);
876   iv->step = simplify_gen_binary (PLUS, outer_mode, inner_step, outer_step);
878   iv->extend_mode = outer_mode;
882   iv->first_special = inner_mode != outer_mode;