Check code kind when resetting profiler ticks.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 58a34634a7ffc4842ac7a6fa6114002cacdca85b..d99338cbcff22df1ab574f0991df1094a8384063 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -7869,14 +7869,17 @@ void SharedFunctionInfo::AttachInitialMap(Map* map) {
 
 void SharedFunctionInfo::ResetForNewContext(int new_ic_age) {
   code()->ClearInlineCaches();
-  code()->set_profiler_ticks(0);
   set_ic_age(new_ic_age);
-  if (optimization_disabled() && opt_count() >= Compiler::kDefaultMaxOptCount) {
-    // Re-enable optimizations if they were disabled due to opt_count limit.
-    set_optimization_disabled(false);
-    code()->set_optimizable(true);
+  if (code()->kind() == Code::FUNCTION) {

[ulan, 2012/04/02 12:52:30]

Another kind that can appear here is Code::BUILTIN.
Builtins implemented in assembly have such kind.
 
Builtins implemented in javasript have kind Code::FUNCTION.

For example, d8 outputs the following for the EQUALS builtin implemented in
javascript:

--- Code ---
kind = FUNCTION
name = EQUALS
Instructions (size = 2076)
                  [ function compiled by full code generator

+    code()->set_profiler_ticks(0);
+    if (optimization_disabled() &&
+        opt_count() >= Compiler::kDefaultMaxOptCount) {
+      // Re-enable optimizations if they were disabled due to opt_count limit.
+      set_optimization_disabled(false);
+      code()->set_optimizable(true);
+    }
+    set_opt_count(0);
   }
-  set_opt_count(0);
 }