* print-tree.c (print_node): Use code instead of TREE_CODE (node).

[pf3gnuchains/gcc-fork.git] / gcc / expmed.c

diff --git a/gcc/expmed.c b/gcc/expmed.c
index ae5ad0a..0c7e611 100644 (file)
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -1,7 +1,7 @@
 /* Medium-level subroutines: convert bit-field store and extract
    and shifts, multiplies and divides to rtl instructions.
    Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -1278,9 +1278,8 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize,
       {
        if (MEM_P (op0))
          op0 = adjust_address (op0, imode, 0);
-       else
+       else if (imode != BLKmode)
          {
-           gcc_assert (imode != BLKmode);
            op0 = gen_lowpart (imode, op0);
 
            /* If we got a SUBREG, force it into a register since we
@@ -1288,6 +1287,24 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize,
            if (GET_CODE (op0) == SUBREG)
              op0 = force_reg (imode, op0);
          }
+       else if (REG_P (op0))
+         {
+           rtx reg, subreg;
+           imode = smallest_mode_for_size (GET_MODE_BITSIZE (GET_MODE (op0)),
+                                           MODE_INT);
+           reg = gen_reg_rtx (imode);
+           subreg = gen_lowpart_SUBREG (GET_MODE (op0), reg);
+           emit_move_insn (subreg, op0);
+           op0 = reg;
+           bitnum += SUBREG_BYTE (subreg) * BITS_PER_UNIT;
+         }
+       else
+         {
+           rtx mem = assign_stack_temp (GET_MODE (op0),
+                                        GET_MODE_SIZE (GET_MODE (op0)), 0);
+           emit_move_insn (mem, op0);
+           op0 = adjust_address (mem, BLKmode, 0);
+         }
       }
   }
 
@@ -3075,7 +3092,8 @@ expand_mult (enum machine_mode mode, rtx op0, rtx op1, rtx target,
        {
          /* If we are multiplying in DImode, it may still be a win
             to try to work with shifts and adds.  */
-         if (CONST_DOUBLE_HIGH (op1) == 0)
+         if (CONST_DOUBLE_HIGH (op1) == 0
+             && CONST_DOUBLE_LOW (op1) > 0)
            coeff = CONST_DOUBLE_LOW (op1);
          else if (CONST_DOUBLE_LOW (op1) == 0
                   && EXACT_POWER_OF_2_OR_ZERO_P (CONST_DOUBLE_HIGH (op1)))