2010-01-08 Tobias Burnus <burnus@net-b.de

[pf3gnuchains/gcc-fork.git] / gcc / postreload-gcse.c

diff --git a/gcc/postreload-gcse.c b/gcc/postreload-gcse.c
index 805608d..dcd95eb 100644 (file)
--- a/gcc/postreload-gcse.c
+++ b/gcc/postreload-gcse.c
@@ -1,5 +1,5 @@
 /* Post reload partially redundant load elimination
-   Copyright (C) 2004, 2005, 2006, 2007
+   Copyright (C) 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -310,7 +310,7 @@ expr_equiv_p (const void *exp1p, const void *exp2p)
   const struct expr *const exp1 = (const struct expr *) exp1p;
   const struct expr *const exp2 = (const struct expr *) exp2p;
   int equiv_p = exp_equiv_p (exp1->expr, exp2->expr, 0, true);
-  
+
   gcc_assert (!equiv_p || exp1->hash == exp2->hash);
   return equiv_p;
 }
@@ -349,7 +349,7 @@ insert_expr_in_table (rtx x, rtx insn)
 
   slot = (struct expr **) htab_find_slot_with_hash (expr_table, cur_expr,
                                                    hash, INSERT);
-  
+
   if (! (*slot))
     /* The expression isn't found, so insert it.  */
     *slot = cur_expr;
@@ -363,7 +363,8 @@ insert_expr_in_table (rtx x, rtx insn)
 
   /* Search for another occurrence in the same basic block.  */
   avail_occr = cur_expr->avail_occr;
-  while (avail_occr && BLOCK_NUM (avail_occr->insn) != BLOCK_NUM (insn))
+  while (avail_occr
+        && BLOCK_FOR_INSN (avail_occr->insn) != BLOCK_FOR_INSN (insn))
     {
       /* If an occurrence isn't found, save a pointer to the end of
         the list.  */
@@ -758,7 +759,7 @@ record_opr_changes (rtx insn)
              }
          }
 
-      if (! CONST_OR_PURE_CALL_P (insn))
+      if (! RTL_CONST_OR_PURE_CALL_P (insn))
        record_last_mem_set_info (insn);
     }
 }
@@ -1002,7 +1003,7 @@ eliminate_partially_redundant_load (basic_block bb, rtx insn,
          avail_insn = a_occr->insn;
          avail_reg = get_avail_load_store_reg (avail_insn);
          gcc_assert (avail_reg);
-         
+
          /* Make sure we can generate a move from register avail_reg to
             dest.  */
          extract_insn (gen_move_insn (copy_rtx (dest),
@@ -1065,9 +1066,9 @@ eliminate_partially_redundant_load (basic_block bb, rtx insn,
 
   if (/* No load can be replaced by copy.  */
       npred_ok == 0
-      /* Prevent exploding the code.  */ 
-      || (optimize_size && npred_ok > 1)
-      /* If we don't have profile information we cannot tell if splitting 
+      /* Prevent exploding the code.  */
+      || (optimize_bb_for_size_p (bb) && npred_ok > 1)
+      /* If we don't have profile information we cannot tell if splitting
          a critical edge is profitable or not so don't do it.  */
       || ((! profile_info || ! flag_branch_probabilities
           || targetm.cannot_modify_jumps_p ())
@@ -1173,7 +1174,7 @@ eliminate_partially_redundant_loads (void)
        continue;
 
       /* Do not try anything on cold basic blocks.  */
-      if (probably_cold_bb_p (bb))
+      if (optimize_bb_for_size_p (bb))
        continue;
 
       /* Reset the table of things changed since the start of the current
@@ -1269,7 +1270,7 @@ gcse_after_reload_main (rtx f ATTRIBUTE_UNUSED)
 
   memset (&stats, 0, sizeof (stats));
 
-  /* Allocate ememory for this pass.
+  /* Allocate memory for this pass.
      Also computes and initializes the insns' CUIDs.  */
   alloc_mem ();
 
@@ -1295,7 +1296,7 @@ gcse_after_reload_main (rtx f ATTRIBUTE_UNUSED)
          fprintf (dump_file, "\n\n");
        }
     }
-    
+
   /* We are finished with alias.  */
   end_alias_analysis ();
 
@@ -1306,7 +1307,8 @@ gcse_after_reload_main (rtx f ATTRIBUTE_UNUSED)
 static bool
 gate_handle_gcse2 (void)
 {
-  return (optimize > 0 && flag_gcse_after_reload);
+  return (optimize > 0 && flag_gcse_after_reload
+         && optimize_function_for_speed_p (cfun));
 }
 
 
@@ -1318,8 +1320,10 @@ rest_of_handle_gcse2 (void)
   return 0;
 }
 
-struct tree_opt_pass pass_gcse2 =
+struct rtl_opt_pass pass_gcse2 =
 {
+ {
+  RTL_PASS,
   "gcse2",                              /* name */
   gate_handle_gcse2,                    /* gate */
   rest_of_handle_gcse2,                 /* execute */
@@ -1332,7 +1336,7 @@ struct tree_opt_pass pass_gcse2 =
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
   TODO_dump_func | TODO_verify_rtl_sharing
-  | TODO_verify_flow | TODO_ggc_collect,/* todo_flags_finish */
-  'J'                                   /* letter */
+  | TODO_verify_flow | TODO_ggc_collect /* todo_flags_finish */
+ }
 };