Eliminate all direct references to "cfun" from macros in
        basic-block.h and introduce access methods to control_flow_graph

        * basic-block.h (control_flow_graph::get_basic_block_by_idx): New
        accessor methods.
        (control_flow_graph::get_entry_block): New method.
        (control_flow_graph::get_exit_block): New method.
        (control_flow_graph::get_basic_block_info): New methods.
        (control_flow_graph::get_n_basic_blocks): New methods.
        (control_flow_graph::get_n_edges): New methods.
        (control_flow_graph::get_last_basic_block): New methods.
        (control_flow_graph::get_label_to_block_map): New methods.
        (control_flow_graph::get_profile_status): New method.
        (control_flow_graph::set_profile_status): New method.
        (ENTRY_BLOCK_PTR): Eliminate this macro.
        (EXIT_BLOCK_PTR): Likewise.
        (basic_block_info): Likewise.
        (n_basic_blocks): Likewise.
        (n_edges): Likewise.
        (last_basic_block): Likewise.
        (label_to_block_map): Likewise.
        (profile_status): Likewise.
        (BASIC_BLOCK): Likewise.
        (SET_BASIC_BLOCK): Likewise.
        (FOR_EACH_BB_FN): Rewrite in terms of...
        (FOR_EACH_BB_CFG): New macro
        (FOR_EACH_BB): Eliminate this macro
        (FOR_EACH_BB_REVERSE_FN): Rewrite in terms of...
        (FOR_EACH_BB_REVERSE_FN_CFG): New macro
        (FOR_EACH_BB_REVERSE): Eliminate this macro
        (FOR_ALL_BB): Likewise.
        (FOR_ALL_BB_CFG): New macro

---
diff --git a/gcc/basic-block.h b/gcc/basic-block.h
index eed320c..3949417 100644
--- a/gcc/basic-block.h
+++ b/gcc/basic-block.h
@@ -276,6 +276,57 @@ enum profile_status_d
    fields of this struct are interpreted as the defines for backward
    source compatibility following the definition of this struct.  */
 struct GTY(()) control_flow_graph {
+public:
+  basic_block get_basic_block_by_idx (int idx) const
+  {
+    return (*x_basic_block_info)[idx];
+  }
+  void set_basic_block_by_idx (int idx, basic_block bb)
+  {
+    (*x_basic_block_info)[idx] = bb;
+  }
+
+  basic_block get_entry_block () const { return x_entry_block_ptr; }
+
+  basic_block get_exit_block () const { return x_exit_block_ptr; }
+
+  vec<basic_block, va_gc> *get_basic_block_info () const
+  {
+    return x_basic_block_info;
+  }
+  vec<basic_block, va_gc> *&get_basic_block_info ()
+  {
+    return x_basic_block_info;
+  }
+
+  int get_n_basic_blocks () const { return x_n_basic_blocks; }
+  int& get_n_basic_blocks () { return x_n_basic_blocks; }
+
+  int get_n_edges () const { return x_n_edges; }
+  int& get_n_edges () { return x_n_edges; }
+
+  int get_last_basic_block () const { return x_last_basic_block; }
+  int& get_last_basic_block () { return x_last_basic_block; }
+
+  vec<basic_block, va_gc> *get_label_to_block_map () const
+  {
+    return x_label_to_block_map;
+  }
+  vec<basic_block, va_gc> *&get_label_to_block_map ()
+  {
+    return x_label_to_block_map;
+  }
+
+  enum profile_status_d get_profile_status () const
+  {
+    return x_profile_status;
+  }
+  void set_profile_status (enum profile_status_d status)
+  {
+    x_profile_status = status;
+  }
+
+public:
   /* Block pointers for the exit and entry of a function.
      These are always the head and tail of the basic block list.  */
   basic_block x_entry_block_ptr;
@@ -328,32 +379,20 @@ struct GTY(()) control_flow_graph {
 #define SET_BASIC_BLOCK_FOR_FUNCTION(FN,N,BB) \
   ((*basic_block_info_for_function(FN))[(N)] = (BB))
 
-/* Defines for textual backward source compatibility.  */
-#define ENTRY_BLOCK_PTR                (cfun->cfg->x_entry_block_ptr)
-#define EXIT_BLOCK_PTR         (cfun->cfg->x_exit_block_ptr)
-#define basic_block_info       (cfun->cfg->x_basic_block_info)
-#define n_basic_blocks         (cfun->cfg->x_n_basic_blocks)
-#define n_edges                        (cfun->cfg->x_n_edges)
-#define last_basic_block       (cfun->cfg->x_last_basic_block)
-#define label_to_block_map     (cfun->cfg->x_label_to_block_map)
-#define profile_status         (cfun->cfg->x_profile_status)
-
-#define BASIC_BLOCK(N)         ((*basic_block_info)[(N)])
-#define SET_BASIC_BLOCK(N,BB)  ((*basic_block_info)[(N)] = (BB))
-
 /* For iterating over basic blocks.  */
 #define FOR_BB_BETWEEN(BB, FROM, TO, DIR) \
   for (BB = FROM; BB != TO; BB = BB->DIR)
 
-#define FOR_EACH_BB_FN(BB, FN) \
-  FOR_BB_BETWEEN (BB, (FN)->cfg->x_entry_block_ptr->next_bb, 
(FN)->cfg->x_exit_block_ptr, next_bb)
+#define FOR_EACH_BB_CFG(BB, CFG) \
+  FOR_BB_BETWEEN (BB, (CFG)->x_entry_block_ptr->next_bb, 
(CFG)->x_exit_block_ptr, next_bb)
 
-#define FOR_EACH_BB(BB) FOR_EACH_BB_FN (BB, cfun)
+#define FOR_EACH_BB_FN(BB, FN) FOR_EACH_BB_CFG (BB, (FN)->cfg)
 
-#define FOR_EACH_BB_REVERSE_FN(BB, FN) \
-  FOR_BB_BETWEEN (BB, (FN)->cfg->x_exit_block_ptr->prev_bb, 
(FN)->cfg->x_entry_block_ptr, prev_bb)
+#define FOR_EACH_BB_REVERSE_CFG(BB, CFG) \
+  FOR_BB_BETWEEN (BB, (CFG)->x_exit_block_ptr->prev_bb, 
(CFG)->x_entry_block_ptr, prev_bb)
 
-#define FOR_EACH_BB_REVERSE(BB) FOR_EACH_BB_REVERSE_FN(BB, cfun)
+#define FOR_EACH_BB_REVERSE_FN(BB, FN) \
+  FOR_EACH_BB_REVERSE_FN_CFG (BB, (FN)->cfg)
 
 /* For iterating over insns in basic block.  */
 #define FOR_BB_INSNS(BB, INSN)                 \
@@ -380,9 +419,8 @@ struct GTY(()) control_flow_graph {
 
 /* Cycles through _all_ basic blocks, even the fake ones (entry and
    exit block).  */
-
-#define FOR_ALL_BB(BB) \
-  for (BB = ENTRY_BLOCK_PTR; BB; BB = BB->next_bb)
+#define FOR_ALL_BB_CFG(BB, CFG) \
+  for (BB = (CFG)->get_entry_block (); BB; BB = BB->next_bb)
 
 #define FOR_ALL_BB_FN(BB, FN) \
   for (BB = ENTRY_BLOCK_PTR_FOR_FUNCTION (FN); BB; BB = BB->next_bb)
-- 
1.7.11.7

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