df-scan.c (df_get_entry_block_def_set): Check if STATIC_CHAIN_REGNUM is defined.

        * df-scan.c (df_get_entry_block_def_set): Check if STATIC_CHAIN_REGNUM
        is defined.

From-SVN: r125682

gcc/ChangeLog

+2007-06-13  Bob Wilson  <bob.wilson@acm.org>
+	
+	* df-scan.c (df_get_entry_block_def_set): Check if STATIC_CHAIN_REGNUM
+	is defined.
+	
 2007-06-13  Bernd Schmidt  <bernd.schmidt@analog.com>
 
 	* config/bfin/bfin.h (EH_RETURN_HANDLER_RTX): Use gen_frame_mem.

gcc/df-scan.c

@@ -3587,11 +3587,12 @@ df_get_entry_block_def_set (bitmap entry_block_defs)
      it has to show up in the entry def set.  */
   if (df_need_static_chain_reg (cfun))
     {
-#if !defined (STATIC_CHAIN_INCOMING_REGNUM) \
-      || STATIC_CHAIN_REGNUM == STATIC_CHAIN_INCOMING_REGNUM
-      bitmap_set_bit (entry_block_defs, STATIC_CHAIN_REGNUM);
-#else 
+#ifdef STATIC_CHAIN_INCOMING_REGNUM
       bitmap_set_bit (entry_block_defs, STATIC_CHAIN_INCOMING_REGNUM);
+#else 
+#ifdef STATIC_CHAIN_REGNUM
+      bitmap_set_bit (entry_block_defs, STATIC_CHAIN_REGNUM);
+#endif
 #endif
     }
 }