diff options
Diffstat (limited to 'gcc/fwprop.c')
| -rw-r--r-- | gcc/fwprop.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/gcc/fwprop.c b/gcc/fwprop.c index 0ab25ef..cab801e 100644 --- a/gcc/fwprop.c +++ b/gcc/fwprop.c @@ -680,8 +680,7 @@ propagate_rtx (rtx x, machine_mode mode, rtx old_rtx, rtx new_rtx, || CONSTANT_P (new_rtx) || (GET_CODE (new_rtx) == SUBREG && REG_P (SUBREG_REG (new_rtx)) - && (GET_MODE_SIZE (mode) - <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (new_rtx)))))) + && !paradoxical_subreg_p (mode, GET_MODE (SUBREG_REG (new_rtx))))) flags |= PR_CAN_APPEAR; if (!varying_mem_p (new_rtx)) flags |= PR_HANDLE_MEM; @@ -1103,9 +1102,7 @@ forward_propagate_subreg (df_ref use, rtx_insn *def_insn, rtx def_set) || !REG_P (SET_DEST (def_set))) return false; - /* If this is a paradoxical SUBREG... */ - if (GET_MODE_SIZE (use_mode) - > GET_MODE_SIZE (GET_MODE (SUBREG_REG (use_reg)))) + if (paradoxical_subreg_p (use_reg)) { /* If this is a paradoxical SUBREG, we have no idea what value the extra bits would have. However, if the operand is equivalent to |