[interpreter] Add CreateCatchContext bytecode

src/interpreter/bytecode-generator.cc

 // Copyright 2015 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/interpreter/bytecode-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/code-stubs.h"
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-flags.h"
@@ skipping 3216 matching lines @@
   VisitFunctionClosureForContext();
   builder()->StoreAccumulatorInRegister(closure).CallRuntime(
       Runtime::kPushWithContext, extension_object, 2);
   execution_result()->SetResultInAccumulator();
 }
 
 void BytecodeGenerator::VisitNewLocalCatchContext(Variable* variable) {
   AccumulatorResultScope accumulator_execution_result(this);
   DCHECK(variable->IsContextSlot());
 
-  // Allocate a new local block context.
-  register_allocator()->PrepareForConsecutiveAllocations(3);
-  Register name = register_allocator()->NextConsecutiveRegister();
-  Register exception = register_allocator()->NextConsecutiveRegister();
-  Register closure = register_allocator()->NextConsecutiveRegister();
-
-  builder()
-      ->StoreAccumulatorInRegister(exception)
-      .LoadLiteral(variable->name())
-      .StoreAccumulatorInRegister(name);
+  Register exception = register_allocator()->NewRegister();
+  builder()->StoreAccumulatorInRegister(exception);
   VisitFunctionClosureForContext();
-  builder()->StoreAccumulatorInRegister(closure).CallRuntime(
-      Runtime::kPushCatchContext, name, 3);
+  builder()->CreateCatchContext(exception, variable->name());
   execution_result()->SetResultInAccumulator();
 }
 
 void BytecodeGenerator::VisitObjectLiteralAccessor(
     Register home_object, ObjectLiteralProperty* property, Register value_out) {
   // TODO(rmcilroy): Replace value_out with VisitForRegister();
   if (property == nullptr) {
     builder()->LoadNull().StoreAccumulatorInRegister(value_out);
   } else {
     VisitForAccumulatorValue(property->value());
@@ skipping 161 matching lines @@
   return execution_context()->scope()->language_mode();
 }
 
 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const {
   return TypeFeedbackVector::GetIndex(slot);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8