re PR middle-end/64340 (FAIL: gnat.dg/lto8.adb (internal compiler error))

	PR middle-end/64340
	* gcc-interface/trans.c (gigi): Recreate optimization_default_node
	and optimization_current_node after tweaking global_options.

From-SVN: r220504

gcc/ada/ChangeLog

+2015-02-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/64340
+	* gcc-interface/trans.c (gigi): Recreate optimization_default_node
+	and optimization_current_node after tweaking global_options.
+
 2015-02-05  Robert Dewar  <dewar@adacore.com>
 
 	* prj-proc.adb, sem_aux.adb, exp_ch9.adb, errout.adb, prj-dect.adb,

gcc/ada/gcc-interface/trans.c

@@ -678,6 +678,11 @@ gigi (Node_Id gnat_root,
   if (No_Strict_Aliasing_CP)
     flag_strict_aliasing = 0;
 
+  /* Save the current optimization options again after the above possible
+     global_options changes.  */
+  optimization_default_node = build_optimization_node (&global_options);
+  optimization_current_node = optimization_default_node;
+
   /* Now translate the compilation unit proper.  */
   Compilation_Unit_to_gnu (gnat_root);