powerpcspe.c (rs6000_expand_prologue): Fix thinko in stack clash protection support.

	* config/powerpcspe/powerpcspe.c (rs6000_expand_prologue): Fix
	thinko in stack clash protection support.

From-SVN: r253036

gcc/ChangeLog

 2017-09-20  Jeff Law  <law@redhat.com>
 
+	* config/powerpcspe/powerpcspe.c (rs6000_expand_prologue): Fix
+	thinko in stack clash protection support.
+
 	* explow.c (compute_stack_clash_protection_loop_data): Use
 	CONST_INT_P instead of explicit test.  Verify object is a
 	CONST_INT_P before looking at INTVAL.

gcc/config/powerpcspe/powerpcspe.c

@@ -29688,7 +29688,7 @@ rs6000_emit_prologue (void)
     current_function_static_stack_size = info->total_size;
 
   if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK
-      || flag_stack_check_protection)
+      || flag_stack_clash_protection)
     {
       HOST_WIDE_INT size = info->total_size;