[ignition] Optimize JSGenerator creation

src/parsing/parser.cc

 // 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.
 
 #include "src/parsing/parser.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "src/api.h"
@@ skipping 3127 matching lines @@
   }
 
   Statement* try_finally_statement = factory()->NewTryFinallyStatement(
       outer_try_block, finally_block, kNoSourcePosition);
 
   result->statements()->Add(try_finally_statement, zone());
   return result;
 }
 
 Assignment* Parser::BuildCreateJSGeneratorObject(int pos, FunctionKind kind) {
-  // .generator = %CreateJSGeneratorObject(...);
+  // .generator = %_CreateJSGeneratorObject(...);
   DCHECK_NOT_NULL(function_state_->generator_object_variable());
   ZoneList<Expression*>* args = new (zone()) ZoneList<Expression*>(2, zone());
   args->Add(factory()->NewThisFunction(pos), zone());
   args->Add(IsArrowFunction(kind) ? GetLiteralUndefined(pos)
                                   : ThisExpression(kNoSourcePosition),
             zone());
-  Expression* allocation =
-      factory()->NewCallRuntime(Runtime::kCreateJSGeneratorObject, args, pos);
+  Expression* allocation = factory()->NewCallRuntime(
+      Runtime::kInlineCreateJSGeneratorObject, args, pos);
   VariableProxy* proxy =
       factory()->NewVariableProxy(function_state_->generator_object_variable());
   return factory()->NewAssignment(Token::INIT, proxy, allocation,
                                   kNoSourcePosition);
 }
 
 Expression* Parser::BuildResolvePromise(Expression* value, int pos) {
   // %ResolvePromise(.promise, value), .promise
   ZoneList<Expression*>* args = new (zone()) ZoneList<Expression*>(2, zone());
   args->Add(factory()->NewVariableProxy(PromiseVariable()), zone());
@@ skipping 2078 matching lines @@
     literal->SetShouldEagerCompile();
   }
 }
 
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED
 
 }  // namespace internal
 }  // namespace v8