avr.h (machine_function): Add 'is_leaf' field.

	* config/avr/avr.h (machine_function): Add 'is_leaf' field.
	* config/avr/avr.c (avr_regs_to_save): Compute 'machine->is_leaf'.
	Use 'machine->is_leaf' instead of 'leaf_func_p'.

From-SVN: r135231

gcc/ChangeLog

+2008-05-12  Anatoly Sokolov <aesok@post.ru>
+
+	* config/avr/avr.h (machine_function): Add 'is_leaf' field.
+	* config/avr/avr.c (avr_regs_to_save): Compute 'machine->is_leaf'.
+	Use 'machine->is_leaf' instead of 'leaf_func_p'.
+
 2008-05-12  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/sse.md (*sse_concatv4sf): Renamed to ...

gcc/config/avr/avr.c

@@ -471,7 +471,9 @@ avr_regs_to_save (HARD_REG_SET *set)
   int reg, count;
   int int_or_sig_p = (interrupt_function_p (current_function_decl)
 		      || signal_function_p (current_function_decl));
-  int leaf_func_p = leaf_function_p ();
+
+  if (!reload_completed)
+    cfun->machine->is_leaf = leaf_function_p ();
 
   if (set)
     CLEAR_HARD_REG_SET (*set);
@@ -490,7 +492,7 @@ avr_regs_to_save (HARD_REG_SET *set)
       if (fixed_regs[reg])
 	continue;
 
-      if ((int_or_sig_p && !leaf_func_p && call_used_regs[reg])
+      if ((int_or_sig_p && !cfun->machine->is_leaf && call_used_regs[reg])
 	  || (df_regs_ever_live_p (reg)
 	      && (int_or_sig_p || !call_used_regs[reg])
 	      && !(frame_pointer_needed

gcc/config/avr/avr.h

@@ -1026,6 +1026,9 @@ mmcu=*:-mmcu=%*}"
    This is added to the cfun structure.  */
 struct machine_function GTY(())
 {
+  /* 'true' - if the current function is a leaf function.  */
+  int is_leaf;
+
   /* 'true' - if current function is a naked function.  */
   int is_naked;