contrib/gcc/simplify-rtx.c

4227 		       enum machine_mode innermode, unsigned int byte)
4262       elem_bitsize = GET_MODE_BITSIZE (GET_MODE_INNER (innermode));
4367   if (GET_MODE_SIZE (innermode) >= GET_MODE_SIZE (outermode))
4369       unsigned ibyte = (GET_MODE_SIZE (innermode) - GET_MODE_SIZE (outermode)
4379   gcc_assert (byte < GET_MODE_SIZE (innermode));
4490 		 enum machine_mode innermode, unsigned int byte)
4493   gcc_assert (innermode != VOIDmode);
4495   gcc_assert (innermode != BLKmode);
4498   gcc_assert (GET_MODE (op) == innermode
4502   gcc_assert (byte < GET_MODE_SIZE (innermode));
4504   if (outermode == innermode && !byte)
4510     return simplify_immed_subreg (outermode, op, innermode, byte);
4528       if (byte == 0 && GET_MODE_SIZE (innermode) < GET_MODE_SIZE (outermode))
4530 	  int difference = (GET_MODE_SIZE (innermode) - GET_MODE_SIZE (outermode));
4537 	  && GET_MODE_SIZE (innermostmode) < GET_MODE_SIZE (innermode))
4539 	  int difference = (GET_MODE_SIZE (innermostmode) - GET_MODE_SIZE (innermode));
4588       && GET_MODE_SIZE (outermode) < GET_MODE_SIZE (innermode)
4589       && subreg_lowpart_offset (outermode, innermode) == byte)
4601       && ! (REG_CANNOT_CHANGE_MODE_P (REGNO (op), innermode, outermode)
4602 	    && GET_MODE_CLASS (innermode) != MODE_COMPLEX_INT
4603 	    && GET_MODE_CLASS (innermode) != MODE_COMPLEX_FLOAT)
4615       && subreg_offset_representable_p (REGNO (op), innermode,
4620 	= regno + subreg_regno_offset (regno, innermode, byte, outermode);
4626 	  || ! HARD_REGNO_MODE_OK (regno, innermode))
4633 	      && GET_MODE_SIZE (innermode) < GET_MODE_SIZE (outermode))
4635 	      int difference = (GET_MODE_SIZE (innermode)
4650 	  if (subreg_lowpart_offset (outermode, innermode) == byte)
4666 	  || ! have_insn_for (SET, innermode))
4677       inner_size = GET_MODE_UNIT_SIZE (innermode);
4694       && GET_MODE_BITSIZE (outermode) < GET_MODE_BITSIZE (innermode))
4696       unsigned int bitpos = subreg_lsb_1 (outermode, innermode, byte);
4736       && (2 * GET_MODE_BITSIZE (outermode)) <= GET_MODE_BITSIZE (innermode)
4741       && subreg_lsb_1 (outermode, innermode, byte) == 0)
4751       && GET_MODE_BITSIZE (outermode) < GET_MODE_BITSIZE (innermode)
4756       && subreg_lsb_1 (outermode, innermode, byte) == 0)
4765       && GET_MODE_BITSIZE (outermode) < GET_MODE_BITSIZE (innermode)
4771       && subreg_lsb_1 (outermode, innermode, byte) == 0)
4782 		     enum machine_mode innermode, unsigned int byte)
4786   newx = simplify_subreg (outermode, op, innermode, byte);
4795   if (validate_subreg (outermode, innermode, op, byte))