[turbofan] Relax a too-strict 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 1376 matching lines @@
       // Simplified operators.
       //------------------------------------------------------------------
       case IrOpcode::kBooleanNot: {
         if (lower()) {
           NodeInfo* input_info = GetInfo(node->InputAt(0));
           if (input_info->representation() == MachineRepresentation::kBit) {
             // BooleanNot(x: kRepBit) => Word32Equal(x, #0)
             node->AppendInput(jsgraph_->zone(), jsgraph_->Int32Constant(0));
             NodeProperties::ChangeOp(node, lowering->machine()->Word32Equal());
           } else {
-            DCHECK_EQ(input_info->representation(),
-                      MachineRepresentation::kTagged);
+            DCHECK(CanBeTaggedPointer(input_info->representation()));
             // BooleanNot(x: kRepTagged) => WordEqual(x, #false)
             node->AppendInput(jsgraph_->zone(), jsgraph_->FalseConstant());
             NodeProperties::ChangeOp(node, lowering->machine()->WordEqual());
           }
         } else {
           // No input representation requirement; adapt during lowering.
           ProcessInput(node, 0, UseInfo::AnyTruncatingToBool());
           SetOutput(node, MachineRepresentation::kBit);
         }
         return;
@@ skipping 1841 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