[crankshaft] Check if the function is callable before generating a tail call via Call builtin.

src/crankshaft/hydrogen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CRANKSHAFT_HYDROGEN_H_
 #define V8_CRANKSHAFT_HYDROGEN_H_
 
 #include "src/accessors.h"
 #include "src/allocation.h"
 #include "src/ast/ast.h"
@@ skipping 2819 matching lines @@
                                  HValue* object_elements);
 
   void BuildEmitFixedArray(Handle<FixedArrayBase> elements,
                            ElementsKind kind,
                            HValue* object_elements,
                            AllocationSiteUsageContext* site_context);
 
   void AddCheckPrototypeMaps(Handle<JSObject> holder,
                              Handle<Map> receiver_map);
 
+  void BuildEnsureCallable(HValue* object);
+
   HInstruction* NewCallFunction(HValue* function, int argument_count,
                                 TailCallMode syntactic_tail_call_mode,
                                 ConvertReceiverMode convert_mode,
                                 TailCallMode tail_call_mode);
 
   HInstruction* NewCallFunctionViaIC(HValue* function, int argument_count,
                                      TailCallMode syntactic_tail_call_mode,
                                      ConvertReceiverMode convert_mode,
                                      TailCallMode tail_call_mode,
                                      FeedbackVectorSlot slot);
@@ skipping 211 matching lines @@
   }
 
  private:
   HOptimizedGraphBuilder* builder_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_H_