contrib/gcc/emit-rtl.c

1112   enum machine_mode innermode;
1116   innermode = GET_MODE (x);
1119     innermode = mode_for_size (HOST_BITS_PER_WIDE_INT, MODE_INT, 0);
1120   else if (innermode == VOIDmode)
1121     innermode = mode_for_size (HOST_BITS_PER_WIDE_INT * 2, MODE_INT, 0);
1123   xsize = GET_MODE_SIZE (innermode);
1125   gcc_assert (innermode != VOIDmode && innermode != BLKmode);
1127   if (innermode == mode)
1139   offset = subreg_lowpart_offset (mode, innermode);
1163     return simplify_gen_subreg (mode, x, innermode, offset);
1200 gen_highpart_mode (enum machine_mode outermode, enum machine_mode innermode, rtx exp)
1204       gcc_assert (GET_MODE (exp) == innermode);
1207   return simplify_gen_subreg (outermode, exp, innermode,
1208 			      subreg_highpart_offset (outermode, innermode));
1215 subreg_lowpart_offset (enum machine_mode outermode, enum machine_mode innermode)
1218   int difference = (GET_MODE_SIZE (innermode) - GET_MODE_SIZE (outermode));
1234 subreg_highpart_offset (enum machine_mode outermode, enum machine_mode innermode)
1237   int difference = (GET_MODE_SIZE (innermode) - GET_MODE_SIZE (outermode));
1239   gcc_assert (GET_MODE_SIZE (innermode) >= GET_MODE_SIZE (outermode));