diff options
Diffstat (limited to 'gcc/dse.cc')
-rw-r--r-- | gcc/dse.cc | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -1946,7 +1946,9 @@ get_stored_val (store_info *store_info, machine_mode read_mode, copy_rtx (store_info->const_rhs)); else if (VECTOR_MODE_P (read_mode) && VECTOR_MODE_P (store_mode) && known_le (GET_MODE_BITSIZE (read_mode), GET_MODE_BITSIZE (store_mode)) - && targetm.modes_tieable_p (read_mode, store_mode)) + && targetm.modes_tieable_p (read_mode, store_mode) + && validate_subreg (read_mode, store_mode, copy_rtx (store_info->rhs), + subreg_lowpart_offset (read_mode, store_mode))) read_reg = gen_lowpart (read_mode, copy_rtx (store_info->rhs)); else read_reg = extract_low_bits (read_mode, store_mode, |