HasNonSmiUse should ignore tagged uses

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
===================================================================
--- src/hydrogen-instructions.cc	(revision 15942)
+++ src/hydrogen-instructions.cc	(working copy)
@@ -4375,7 +4375,8 @@
     // We check for observed_input_representation elsewhere.
     Representation use_rep =
         it.value()->RequiredInputRepresentation(it.index());
-    if (!use_rep.IsNone() && !use_rep.IsSmi()) return true;
+    if (!use_rep.IsNone() && !use_rep.IsSmi()
+        && !use_rep.IsTagged()) return true;

[Toon Verwaest, 2013/07/30 08:32:05]

Nit: use new lines for each of the three cases, put the && at the end of the
line rather than the start, and put {} around the true case.
Otherwise you could also just check for Integer32 and Double instead.

   }
   return false;
 }