[async-functions] support await expressions in finally statements

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 <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 11483 matching lines @@
 
 
 void HOptimizedGraphBuilder::VisitEmptyParentheses(EmptyParentheses* expr) {
   UNREACHABLE();
 }
 
 void HOptimizedGraphBuilder::VisitGetIterator(GetIterator* expr) {
   UNREACHABLE();
 }
 
+void HOptimizedGraphBuilder::VisitInternalVariable(InternalVariable* expr) {
+  UNREACHABLE();
+}
+
 HValue* HOptimizedGraphBuilder::AddThisFunction() {
   return AddInstruction(BuildThisFunction());
 }
 
 
 HInstruction* HOptimizedGraphBuilder::BuildThisFunction() {
   // If we share optimized code between different closures, the
   // this-function is not a constant, except inside an inlined body.
   if (function_state()->outer() != NULL) {
       return New<HConstant>(
@@ skipping 1508 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8