Record function call targets, use them for inlining.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 3b63f9c28b2f239c7909ef0dba7c3d8f953ccc2a..4729b3fe7ea28d08000e955b76fb6b2374e2d16a 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -3099,6 +3099,19 @@ void Code::set_to_boolean_state(byte value) {
   WRITE_BYTE_FIELD(this, kToBooleanTypeOffset, value);
 }
 
+
+bool Code::has_function_cache() {
+  ASSERT(kind() == STUB);
+  return READ_BYTE_FIELD(this, kHasFunctionCacheOffset) != 0;
+}
+
+
+void Code::set_has_function_cache(bool flag) {
+  ASSERT(kind() == STUB);
+  WRITE_BYTE_FIELD(this, kHasFunctionCacheOffset, flag);
+}
+
+
 bool Code::is_inline_cache_stub() {
   Kind kind = this->kind();
   return kind >= FIRST_IC_KIND && kind <= LAST_IC_KIND;