gcc/

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

diff --git a/gcc/regclass.c b/gcc/regclass.c
index e54196c..dab3377 100644 (file)
--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -1,6 +1,6 @@
 /* Compute register class preferences for pseudo-registers.
    Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996
-   1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -1059,8 +1059,10 @@ regclass_init (void)
   return 1;
 }
 
-struct tree_opt_pass pass_regclass_init =
+struct rtl_opt_pass pass_regclass_init =
 {
+ {
+  RTL_PASS,
   "regclass",                           /* name */
   NULL,                                 /* gate */
   regclass_init,                        /* execute */
@@ -1072,8 +1074,8 @@ struct tree_opt_pass pass_regclass_init =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  0,                                    /* todo_flags_finish */
-  'k'                                   /* letter */
+  0                                     /* todo_flags_finish */
+ }
 };
 
 
@@ -1141,8 +1143,9 @@ record_operand_costs (rtx insn, struct costs *op_costs,
        record_address_regs (GET_MODE (recog_data.operand[i]),
                             XEXP (recog_data.operand[i], 0),
                             0, MEM, SCRATCH, frequency * 2);
-      else if (constraints[i][0] == 'p'
-              || EXTRA_ADDRESS_CONSTRAINT (constraints[i][0], constraints[i]))
+      else if (recog_data.alternative_enabled_p[0]
+              && (constraints[i][0] == 'p'
+                  || EXTRA_ADDRESS_CONSTRAINT (constraints[i][0], constraints[i])))
        record_address_regs (VOIDmode, recog_data.operand[i], 0, ADDRESS,
                             SCRATCH, frequency * 2);
     }
@@ -1282,7 +1285,7 @@ init_reg_autoinc (void)
                     requires secondary reloads, disallow its class from
                     being used in such addresses.  */
 
-                 if ((secondary_reload_class (1, base_class, m, r)
+                 if ((secondary_reload_class (0, base_class, m, r)
                       || secondary_reload_class (1, base_class, m, r))
                      && ! auto_inc_dec_reg_p (r, m))
                    forbidden_inc_dec_class[i] = 1;
@@ -1307,7 +1310,7 @@ regclass (rtx f, int nregs)
 
   init_recog ();
 
-  reg_renumber = xmalloc (max_regno * sizeof (short));
+  reg_renumber = XNEWVEC (short, max_regno);
   reg_pref = XCNEWVEC (struct reg_pref, max_regno);
   memset (reg_renumber, -1, max_regno * sizeof (short));
 
@@ -1699,7 +1702,7 @@ record_reg_classes (int n_alts, int n_ops, rtx *ops,
                    [(int) base_reg_class (VOIDmode, ADDRESS, SCRATCH)];
                  break;
 
-               case 'm':  case 'o':  case 'V':
+               case TARGET_MEM_CONSTRAINT:  case 'o':  case 'V':
                  /* It doesn't seem worth distinguishing between offsettable
                     and non-offsettable addresses here.  */
                  allows_mem[i] = 1;
@@ -1930,6 +1933,9 @@ record_reg_classes (int n_alts, int n_ops, rtx *ops,
       if (alt_fail)
        continue;
 
+      if (!recog_data.alternative_enabled_p[alt])
+       continue;
+
       /* Finally, update the costs with the information we've calculated
         about this alternative.  */
 
@@ -1955,7 +1961,7 @@ record_reg_classes (int n_alts, int n_ops, rtx *ops,
      we may want to adjust the cost of that register class to -1.
 
      Avoid the adjustment if the source does not die to avoid stressing of
-     register allocator by preferrencing two colliding registers into single
+     register allocator by preferencing two colliding registers into single
      class.
 
      Also avoid the adjustment if a copy between registers of the class
@@ -2323,8 +2329,6 @@ reg_scan (rtx f, unsigned int nregs ATTRIBUTE_UNUSED)
    We should only record information for REGs with numbers
    greater than or equal to MIN_REGNO.  */
 
-extern struct tree_opt_pass *current_pass;
-
 static void
 reg_scan_mark_refs (rtx x, rtx insn)
 {
@@ -2435,10 +2439,7 @@ reg_scan_mark_refs (rtx x, rtx insn)
                 || (GET_CODE (src) == SUBREG && subreg_lowpart_p (src)))
            src = XEXP (src, 0);
 
-         if (REG_P (src))
-           REG_ATTRS (dest) = REG_ATTRS (src);
-         if (MEM_P (src))
-           set_reg_attrs_from_mem (dest, src);
+         set_reg_attrs_from_value (dest, src);
        }
 
       /* ... fall through ...  */
@@ -2499,15 +2500,18 @@ static htab_t subregs_of_mode;
 static hashval_t
 som_hash (const void *x)
 {
-  const struct subregs_of_mode_node *a = x;
+  const struct subregs_of_mode_node *const a =
+    (const struct subregs_of_mode_node *) x;
   return a->block;
 }
 
 static int
 som_eq (const void *x, const void *y)
 {
-  const struct subregs_of_mode_node *a = x;
-  const struct subregs_of_mode_node *b = y;
+  const struct subregs_of_mode_node *const a =
+    (const struct subregs_of_mode_node *) x;
+  const struct subregs_of_mode_node *const b =
+    (const struct subregs_of_mode_node *) y;
   return a->block == b->block;
 }
 
@@ -2532,7 +2536,7 @@ record_subregs_of_mode (rtx subreg)
   dummy.block = regno & -8;
   slot = htab_find_slot_with_hash (subregs_of_mode, &dummy,
                                   dummy.block, INSERT);
-  node = *slot;
+  node = (struct subregs_of_mode_node *) *slot;
   if (node == NULL)
     {
       node = XCNEW (struct subregs_of_mode_node);
@@ -2604,7 +2608,8 @@ cannot_change_mode_set_regs (HARD_REG_SET *used, enum machine_mode from,
 
   gcc_assert (subregs_of_mode);
   dummy.block = regno & -8;
-  node = htab_find_with_hash (subregs_of_mode, &dummy, dummy.block);
+  node = (struct subregs_of_mode_node *)
+    htab_find_with_hash (subregs_of_mode, &dummy, dummy.block);
   if (node == NULL)
     return;
 
@@ -2631,7 +2636,8 @@ invalid_mode_change_p (unsigned int regno,
 
   gcc_assert (subregs_of_mode);
   dummy.block = regno & -8;
-  node = htab_find_with_hash (subregs_of_mode, &dummy, dummy.block);
+  node = (struct subregs_of_mode_node *)
+    htab_find_with_hash (subregs_of_mode, &dummy, dummy.block);
   if (node == NULL)
     return false;
 
@@ -2675,8 +2681,10 @@ gate_subregs_of_mode_init (void)
 #endif
 }
 
-struct tree_opt_pass pass_subregs_of_mode_init =
+struct rtl_opt_pass pass_subregs_of_mode_init =
 {
+ {
+  RTL_PASS,
   "subregs_of_mode_init",               /* name */
   gate_subregs_of_mode_init,            /* gate */
   init_subregs_of_mode,                 /* execute */
@@ -2688,12 +2696,14 @@ struct tree_opt_pass pass_subregs_of_mode_init =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  0,                                    /* todo_flags_finish */
-  0                                     /* letter */
+  0                                     /* todo_flags_finish */
+ }
 };
 
-struct tree_opt_pass pass_subregs_of_mode_finish =
+struct rtl_opt_pass pass_subregs_of_mode_finish =
 {
+ {
+  RTL_PASS,
   "subregs_of_mode_finish",               /* name */
   gate_subregs_of_mode_init,            /* gate */
   finish_subregs_of_mode,               /* execute */
@@ -2705,8 +2715,8 @@ struct tree_opt_pass pass_subregs_of_mode_finish =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  0,                                    /* todo_flags_finish */
-  0                                     /* letter */
+  0                                     /* todo_flags_finish */
+ }
 };