toolchain/gcc/patches/4.2.3/905-avr32_fix_folding_machine_reorg_optimizations.patch

   1 Index: a/gcc/config/avr32/avr32.c
   2 ===================================================================
   3 --- a/gcc/config/avr32/avr32.c  (revision 31997)
   4 +++ b/gcc/config/avr32/avr32.c  (working copy)
   5 @@ -6323,25 +6323,26 @@
   6                  /* If used any other place than as a pointer or as the
   7                  destination register we failed */
   8                  if (!(single_set (scan)
   9 -                    && GET_CODE (PATTERN (scan)) == SET
  10 -                    && ((MEM_P (SET_DEST (PATTERN (scan)))
  11 -                        && REG_P (XEXP (SET_DEST (PATTERN (scan)), 0))
  12 -                        && REGNO (XEXP (SET_DEST (PATTERN (scan)), 0)) ==
  13 -                          REGNO (reg)) || (MEM_P (SET_SRC (PATTERN (scan)))
  14 -                              &&
  15 -                              REG_P (XEXP
  16 -                                  (SET_SRC (PATTERN (scan)),
  17 -                                      0))
  18 -                                      &&
  19 -                                      REGNO (XEXP
  20 -                                          (SET_SRC (PATTERN (scan)),
  21 -                                              0)) == REGNO (reg))))
  22 -                                              && !(GET_CODE (PATTERN (scan)) == SET
  23 -                                                  && REG_P (SET_DEST (PATTERN (scan)))
  24 -                                                  && !regno_use_in (REGNO (reg),
  25 -                                                      SET_SRC (PATTERN (scan)))))
  26 +                      && GET_CODE (PATTERN (scan)) == SET
  27 +                      && ((MEM_P (SET_DEST (PATTERN (scan)))
  28 +                           && REG_P (XEXP (SET_DEST (PATTERN (scan)), 0))
  29 +                           && REGNO (XEXP (SET_DEST (PATTERN (scan)), 0)) == REGNO (reg))
  30 +                          || (MEM_P (SET_SRC (PATTERN (scan)))
  31 +                              && REG_P (XEXP (SET_SRC (PATTERN (scan)), 0))
  32 +                              && REGNO (XEXP
  33 +                                        (SET_SRC (PATTERN (scan)), 0)) == REGNO (reg))))
  34 +                    && !(GET_CODE (PATTERN (scan)) == SET
  35 +                         && REG_P (SET_DEST (PATTERN (scan)))
  36 +                         && !regno_use_in (REGNO (reg),
  37 +                                           SET_SRC (PATTERN (scan)))))
  38                    break;
  39
  40 +                /* We cannot replace the pointer in TImode insns
  41 +                   as these has a differene addressing mode than the other
  42 +                   memory insns. */
  43 +                if ( GET_MODE (SET_DEST (PATTERN (scan))) == TImode )
  44 +                  break;
  45 +
  46                  /* Check if register is dead or set in this insn */
  47                  if (dead_or_set_p (scan, reg))
  48                    {