arm.c (arm_expand_prologue): Set the stack usage to 0 for naked functions.

	* config/arm/arm.c (arm_expand_prologue): Set the stack usage to 0
	for naked functions.
	(thumb1_expand_prologue): Likewise.

From-SVN: r236539

gcc/ChangeLog

+2016-05-20  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* config/arm/arm.c (arm_expand_prologue): Set the stack usage to 0
+	for naked functions.
+	(thumb1_expand_prologue): Likewise.
+
 2016-05-20  Nathan Sidwell  <nathan@acm.org>
 
 	* config/nvptx/nptx.c (nvptx_option_override): Only set

gcc/config/arm/arm.c

@@ -21466,7 +21466,11 @@ arm_expand_prologue (void)
 
   /* Naked functions don't have prologues.  */
   if (IS_NAKED (func_type))
-    return;
+    {
+      if (flag_stack_usage_info)
+	current_function_static_stack_size = 0;
+      return;
+    }
 
   /* Make a copy of c_f_p_a_s as we may need to modify it locally.  */
   args_to_push = crtl->args.pretend_args_size;
@@ -24698,7 +24702,11 @@ thumb1_expand_prologue (void)
 
   /* Naked functions don't have prologues.  */
   if (IS_NAKED (func_type))
-    return;
+    {
+      if (flag_stack_usage_info)
+	current_function_static_stack_size = 0;
+      return;
+    }
 
   if (IS_INTERRUPT (func_type))
     {