313   enum machine_mode to_mode = GET_MODE (to);  in convert_move()  local
315   int to_real = SCALAR_FLOAT_MODE_P (to_mode);  in convert_move()
326   gcc_assert (to_mode != BLKmode);  in convert_move()
340 	  >= GET_MODE_PRECISION (to_mode))  in convert_move()
342     from = gen_lowpart (to_mode, from), from_mode = to_mode;  in convert_move()
346   if (to_mode == from_mode  in convert_move()
353   if (VECTOR_MODE_P (to_mode) || VECTOR_MODE_P (from_mode))  in convert_move()
355       gcc_assert (GET_MODE_BITSIZE (from_mode) == GET_MODE_BITSIZE (to_mode));  in convert_move()
357       if (VECTOR_MODE_P (to_mode))  in convert_move()
358 	from = simplify_gen_subreg (to_mode, from, GET_MODE (from), 0);  in convert_move()
379 		   != GET_MODE_PRECISION (to_mode))  in convert_move()
381 		      != DECIMAL_FLOAT_MODE_P (to_mode)));  in convert_move()
383       if (GET_MODE_PRECISION (from_mode) == GET_MODE_PRECISION (to_mode))  in convert_move()
386       else if (GET_MODE_PRECISION (from_mode) < GET_MODE_PRECISION (to_mode))  in convert_move()
393       code = convert_optab_handler (tab, to_mode, from_mode);  in convert_move()
402       libcall = convert_optab_libfunc (tab, to_mode, from_mode);  in convert_move()
408       value = emit_library_call_value (libcall, NULL_RTX, LCT_CONST, to_mode,  in convert_move()
413 			  tab == trunc_optab ? gen_rtx_FLOAT_TRUNCATE (to_mode,  in convert_move()
415 			  : gen_rtx_FLOAT_EXTEND (to_mode, from));  in convert_move()
422   if (GET_MODE_CLASS (to_mode) == MODE_PARTIAL_INT)  in convert_move()
425 	= smallest_mode_for_size (GET_MODE_BITSIZE (to_mode), MODE_INT);  in convert_move()
427       gcc_assert (convert_optab_handler (trunc_optab, to_mode, full_mode)  in convert_move()
432       emit_unop_insn (convert_optab_handler (trunc_optab, to_mode, full_mode),  in convert_move()
445       if (to_mode == full_mode)  in convert_move()
464 	       ALL_SCALAR_FIXED_POINT_MODE_P (to_mode));  in convert_move()
470       if (GET_MODE_CLASS (from_mode) == GET_MODE_CLASS (to_mode)  in convert_move()
471 	  && GET_MODE_SIZE (from_mode) < GET_MODE_SIZE (to_mode))  in convert_move()
481   if (GET_MODE_PRECISION (from_mode) < GET_MODE_PRECISION (to_mode)  in convert_move()
482       && GET_MODE_PRECISION (to_mode) > BITS_PER_WORD)  in convert_move()
490       int nwords = CEIL (GET_MODE_SIZE (to_mode), UNITS_PER_WORD);  in convert_move()
493       if ((code = can_extend_p (to_mode, from_mode, unsignedp))  in convert_move()
507 	       && ((code = can_extend_p (to_mode, word_mode, unsignedp))  in convert_move()
554 	  rtx subword = operand_subword (to, index, 1, to_mode);  in convert_move()
571       && GET_MODE_PRECISION (to_mode) <= BITS_PER_WORD)  in convert_move()
575 	     && direct_load[(int) to_mode]  in convert_move()
588   if (GET_MODE_BITSIZE (to_mode) < GET_MODE_BITSIZE (from_mode)  in convert_move()
589       && TRULY_NOOP_TRUNCATION_MODES_P (to_mode, from_mode))  in convert_move()
593 	     && direct_load[(int) to_mode]  in convert_move()
599 	  && ! HARD_REGNO_MODE_OK (REGNO (from), to_mode))  in convert_move()
601       emit_move_insn (to, gen_lowpart (to_mode, from));  in convert_move()
606   if (GET_MODE_PRECISION (to_mode) > GET_MODE_PRECISION (from_mode))  in convert_move()
609       if ((code = can_extend_p (to_mode, from_mode, unsignedp))  in convert_move()
624 	    if (((can_extend_p (to_mode, intermediate, unsignedp)  in convert_move()
626 		 || (GET_MODE_SIZE (to_mode) < GET_MODE_SIZE (intermediate)  in convert_move()
627 		     && TRULY_NOOP_TRUNCATION_MODES_P (to_mode, intermediate)))  in convert_move()
638 	  shift_amount = (GET_MODE_PRECISION (to_mode)  in convert_move()
640 	  from = gen_lowpart (to_mode, force_reg (from_mode, from));  in convert_move()
641 	  tmp = expand_shift (LSHIFT_EXPR, to_mode, from, shift_amount,  in convert_move()
643 	  tmp = expand_shift (RSHIFT_EXPR, to_mode, tmp, shift_amount,  in convert_move()
652   if (convert_optab_handler (trunc_optab, to_mode,  in convert_move()
655       emit_unop_insn (convert_optab_handler (trunc_optab, to_mode, from_mode),  in convert_move()
667   if (GET_MODE_PRECISION (to_mode) < GET_MODE_PRECISION (from_mode))  in convert_move()
669       rtx temp = force_reg (to_mode, gen_lowpart (to_mode, from));  in convert_move()