Augment trace-ic to provide information on patching inlined loads.

src/ic.cc

Index: src/ic.cc
===================================================================
--- src/ic.cc	(revision 4913)
+++ src/ic.cc	(working copy)
@@ -734,8 +734,30 @@
       if (PatchInlinedLoad(address(), map, offset)) {
         set_target(megamorphic_stub());
         return lookup.holder()->FastPropertyAt(lookup.GetFieldIndex());
+#ifdef DEBUG
+        if (FLAG_trace_ic) {
+          PrintF("[LoadIC : inline patch %s]\n", *name->ToCString());
+        }
+      } else {
+        if (FLAG_trace_ic) {
+          PrintF("[LoadIC : no inline patch %s (patching failed)]\n",
+                 *name->ToCString());
+        }
       }
+    } else {
+      if (FLAG_trace_ic) {
+        PrintF("[LoadIC : no inline patch %s (not inobject)]\n",
+               *name->ToCString());
+      }
     }
+  } else {
+    if (FLAG_use_ic && state == PREMONOMORPHIC) {
+      if (FLAG_trace_ic) {
+        PrintF("[LoadIC : no inline patch %s (not inlinable)]\n",
+               *name->ToCString());
+#endif
+      }
+    }
   }
 
   // Update inline cache and stub cache.