diff options
Diffstat (limited to 'gcc/lower-subreg.c')
| -rw-r--r-- | gcc/lower-subreg.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/lower-subreg.c b/gcc/lower-subreg.c index ebf364f..e67bc35 100644 --- a/gcc/lower-subreg.c +++ b/gcc/lower-subreg.c @@ -967,7 +967,20 @@ resolve_simple_move (rtx set, rtx insn) rtx reg; reg = gen_reg_rtx (orig_mode); + +#ifdef AUTO_INC_DEC + { + rtx move = emit_move_insn (reg, src); + if (MEM_P (src)) + { + rtx note = find_reg_note (insn, REG_INC, NULL_RTX); + if (note) + add_reg_note (move, REG_INC, XEXP (note, 0)); + } + } +#else emit_move_insn (reg, src); +#endif src = reg; } @@ -1057,6 +1070,16 @@ resolve_simple_move (rtx set, rtx insn) mdest = simplify_gen_subreg (orig_mode, dest, GET_MODE (dest), 0); minsn = emit_move_insn (real_dest, mdest); +#ifdef AUTO_INC_DEC + if (MEM_P (real_dest) + && !(resolve_reg_p (real_dest) || resolve_subreg_p (real_dest))) + { + rtx note = find_reg_note (insn, REG_INC, NULL_RTX); + if (note) + add_reg_note (minsn, REG_INC, XEXP (note, 0)); + } +#endif + smove = single_set (minsn); gcc_assert (smove != NULL_RTX); |