[turbofan] Introduce JSCallForwardVarargs operator.

src/compiler/typer.cc

 // Copyright 2014 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/compiler/typer.h"
 
 #include <iomanip>
 
 #include "src/base/flags.h"
 #include "src/bootstrapper.h"
@@ skipping 815 matching lines @@
   // TODO(rossberg): Ideally FrameState wouldn't have a value output.
   return Type::Internal();
 }
 
 Type* Typer::Visitor::TypeStateValues(Node* node) { return Type::Internal(); }
 
 Type* Typer::Visitor::TypeTypedStateValues(Node* node) {
   return Type::Internal();
 }
 
+Type* Typer::Visitor::TypeArgumentsObjectState(Node* node) {
+  return Type::Internal();
+}
+
 Type* Typer::Visitor::TypeObjectState(Node* node) { return Type::Internal(); }
 
 Type* Typer::Visitor::TypeTypedObjectState(Node* node) {
   return Type::Internal();
 }
 
 Type* Typer::Visitor::TypeCall(Node* node) { return Type::Any(); }
 
 
 Type* Typer::Visitor::TypeProjection(Node* node) {
@@ skipping 722 matching lines @@
         case kWeakSetHas:
           return Type::Boolean();
         default:
           break;
       }
     }
   }
   return Type::NonInternal();
 }
 
+Type* Typer::Visitor::TypeJSCallForwardVarargs(Node* node) {
+  return TypeUnaryOp(node, JSCallFunctionTyper);
+}
 
 Type* Typer::Visitor::TypeJSCallFunction(Node* node) {
   // TODO(bmeurer): We could infer better types if we wouldn't ignore the
   // argument types for the JSCallFunctionTyper above.
   return TypeUnaryOp(node, JSCallFunctionTyper);
 }
 
 Type* Typer::Visitor::TypeJSCallFunctionWithSpread(Node* node) {
   return TypeUnaryOp(node, JSCallFunctionTyper);
 }
@@ skipping 343 matching lines @@
 Type* Typer::Visitor::TypeConstant(Handle<Object> value) {
   if (Type::IsInteger(*value)) {
     return Type::Range(value->Number(), value->Number(), zone());
   }
   return Type::NewConstant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8