diff options
Diffstat (limited to 'gcc/regcprop.c')
| -rw-r--r-- | gcc/regcprop.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/gcc/regcprop.c b/gcc/regcprop.c index 5db5b5d9fdf..b80019b5be0 100644 --- a/gcc/regcprop.c +++ b/gcc/regcprop.c @@ -407,13 +407,9 @@ maybe_mode_change (machine_mode orig_mode, machine_mode copy_mode, int use_nregs = hard_regno_nregs (copy_regno, new_mode); int copy_offset = GET_MODE_SIZE (copy_mode) / copy_nregs * (copy_nregs - use_nregs); - int offset - = GET_MODE_SIZE (orig_mode) - GET_MODE_SIZE (new_mode) - copy_offset; - int byteoffset = offset % UNITS_PER_WORD; - int wordoffset = offset - byteoffset; - - offset = ((WORDS_BIG_ENDIAN ? wordoffset : 0) - + (BYTES_BIG_ENDIAN ? byteoffset : 0)); + unsigned int offset + = subreg_size_lowpart_offset (GET_MODE_SIZE (new_mode) + copy_offset, + GET_MODE_SIZE (orig_mode)); regno += subreg_regno_offset (regno, orig_mode, offset, new_mode); if (targetm.hard_regno_mode_ok (regno, new_mode)) return gen_raw_REG (new_mode, regno); |