[es6] Perform the IsConstructor test in GetSuperConstructor.

src/compiler/verifier.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/verifier.h"
 
 #include <algorithm>
 #include <deque>
 #include <queue>
 #include <sstream>
@@ skipping 593 matching lines @@
     case IrOpcode::kJSDeleteProperty:
     case IrOpcode::kJSHasProperty:
     case IrOpcode::kJSInstanceOf:
       // Type is Boolean.
       CheckTypeIs(node, Type::Boolean());
       break;
     case IrOpcode::kJSTypeOf:
       // Type is String.
       CheckTypeIs(node, Type::String());
       break;
+    case IrOpcode::kJSGetSuperConstructor:
+      // Type is Function.

[Benedikt Meurer, 2016/11/23 04:51:00]

Nit: Type is Receiver.

+      CheckTypeIs(node, Type::Function());

[Benedikt Meurer, 2016/11/23 04:51:00]

Nit: Type::Receiver

+      break;
 
     case IrOpcode::kJSLoadContext:
       // Type can be anything.
       CheckTypeIs(node, Type::Any());
       break;
     case IrOpcode::kJSStoreContext:
       // Type is empty.
       CheckNotTyped(node);
       break;
     case IrOpcode::kJSCreateFunctionContext:
@@ skipping 993 matching lines @@
          replacement->op()->EffectOutputCount() > 0);
   DCHECK(!NodeProperties::IsFrameStateEdge(edge) ||
          replacement->opcode() == IrOpcode::kFrameState);
 }
 
 #endif  // DEBUG
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8