Ensure we never inline class constructors in Crankshaft, as it currently is entirely unsupported.

src/crankshaft/hydrogen.cc

 // Copyright 2013 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.
 
 #include "src/crankshaft/hydrogen.h"
 
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
 #include "src/ast-numbering.h"
@@ skipping 9831 matching lines @@
 
   int args_to_drop = argument_count + (expression->IsCall() ? 2 : 1);
   Drop(args_to_drop);
   ast_context()->ReturnValue(new_object);
 }
 
 
 // Checks whether allocation using the given constructor can be inlined.
 static bool IsAllocationInlineable(Handle<JSFunction> constructor) {
   return constructor->has_initial_map() &&
+         !IsClassConstructor(constructor->shared()->kind()) &&
          constructor->initial_map()->instance_type() == JS_OBJECT_TYPE &&
          constructor->initial_map()->instance_size() <
              HAllocate::kMaxInlineSize;
 }
 
 
 bool HOptimizedGraphBuilder::IsCallArrayInlineable(
     int argument_count,
     Handle<AllocationSite> site) {
   Handle<JSFunction> caller = current_info()->closure();
@@ skipping 3838 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8