[turbofan] Remove overly restrictive DCHECK.

src/compiler/simplified-lowering.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/simplified-lowering.h"
 
 #include <limits>
 
 #include "src/address-map.h"
 #include "src/base/bits.h"
@@ skipping 2427 matching lines @@
   void Kill(Node* node) {
     TRACE("killing #%d:%s\n", node->id(), node->op()->mnemonic());
 
     if (node->op()->EffectInputCount() == 1) {
       DCHECK_LT(0, node->op()->ControlInputCount());
       // Disconnect the node from effect and control chains.
       Node* control = NodeProperties::GetControlInput(node);
       Node* effect = NodeProperties::GetEffectInput(node);
       ReplaceEffectControlUses(node, effect, control);
     } else {
-      DCHECK_EQ(0, node->op()->ControlInputCount());
       DCHECK_EQ(0, node->op()->EffectInputCount());
       DCHECK_EQ(0, node->op()->ControlOutputCount());
       DCHECK_EQ(0, node->op()->EffectOutputCount());
     }
 
     node->ReplaceUses(jsgraph_->Dead());
 
     node->NullAllInputs();  // The {node} is now dead.
   }
 
@@ skipping 1053 matching lines @@
         isolate(), graph()->zone(), callable.descriptor(), 0, flags,
         Operator::kNoProperties);
     to_number_operator_.set(common()->Call(desc));
   }
   return to_number_operator_.get();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8