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Subject: [Bug debug/46796] debug info missing builtin type names with lto
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46796

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |lto
                 CC|                            |rguenth at gcc dot gnu.org
          Component|lto                         |debug
            Summary|debug info missing builtin  |debug info missing builtin
                   |type names on darwin        |type names with lto

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-12-03 23:51:27 UTC ---
Sth like

Index: gimple.c
===================================================================
--- gimple.c    (revision 167445)
+++ gimple.c    (working copy)
@@ -3436,6 +3436,10 @@ gtc_visit (tree t1, tree t2, enum gtc_mo
   if (TREE_CODE (t1) == VOID_TYPE)
     return true;

+  if (mode == GTC_MERGE
+      && !compare_type_names_p (t1, t2, false))
+    return false;
+
   /* Do some simple checks before doing three hashtable queries.  */
   if (INTEGRAL_TYPE_P (t1)
       || SCALAR_FLOAT_TYPE_P (t1)
@@ -3874,6 +3878,10 @@ gimple_types_compatible_p (tree t1, tree
   if (TREE_CODE (t1) == VOID_TYPE)
     return true;

+  if (mode == GTC_MERGE
+      && !compare_type_names_p (t1, t2, false))
+    return false;
+
   /* Do some simple checks before doing three hashtable queries.  */
   if (INTEGRAL_TYPE_P (t1)
       || SCALAR_FLOAT_TYPE_P (t1)


could fix this at the cost of some memory.