[turbofan] Optimized support for CreateGeneratorObject.

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 721 matching lines @@
       CheckTypeIs(node, Type::Any());
       break;
     case IrOpcode::kJSStoreModule:
       CheckNotTyped(node);
       break;
 
     case IrOpcode::kJSGeneratorStore:
       CheckNotTyped(node);
       break;
 
+    case IrOpcode::kJSCreateGeneratorObject:
+      CheckTypeIs(node, Type::OtherObject());
+      break;
+
     case IrOpcode::kJSGeneratorRestoreContinuation:
       CheckTypeIs(node, Type::SignedSmall());
       break;
 
     case IrOpcode::kJSGeneratorRestoreRegister:
       CheckTypeIs(node, Type::Any());
       break;
 
     case IrOpcode::kJSStackCheck:
     case IrOpcode::kJSDebugger:
@@ skipping 947 matching lines @@
 }
 
 
 #ifdef DEBUG
 
 // static
 void Verifier::VerifyNode(Node* node) {
   CHECK_EQ(OperatorProperties::GetTotalInputCount(node->op()),
            node->InputCount());
   // If this node has no effect or no control outputs,
-  // we check that no its uses are effect or control inputs.
+  // we check that none of its uses are effect or control inputs.
   bool check_no_control = node->op()->ControlOutputCount() == 0;
   bool check_no_effect = node->op()->EffectOutputCount() == 0;
   bool check_no_frame_state = node->opcode() != IrOpcode::kFrameState;
+  int effect_edges = 0;
   if (check_no_effect || check_no_control) {
     for (Edge edge : node->use_edges()) {
       Node* const user = edge.from();
       CHECK(!user->IsDead());
       if (NodeProperties::IsControlEdge(edge)) {
         CHECK(!check_no_control);
       } else if (NodeProperties::IsEffectEdge(edge)) {
         CHECK(!check_no_effect);
+        effect_edges++;
       } else if (NodeProperties::IsFrameStateEdge(edge)) {
         CHECK(!check_no_frame_state);
       }
     }
   }
   // Frame state input should be a frame state (or sentinel).
   if (OperatorProperties::GetFrameStateInputCount(node->op()) > 0) {
     Node* input = NodeProperties::GetFrameStateInput(node);
     CHECK(input->opcode() == IrOpcode::kFrameState ||
           input->opcode() == IrOpcode::kStart ||
@@ skipping 23 matching lines @@
          replacement->op()->EffectOutputCount() > 0);
   DCHECK(!NodeProperties::IsFrameStateEdge(edge) ||
          replacement->opcode() == IrOpcode::kFrameState);
 }
 
 #endif  // DEBUG
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8