Reland of [turbofan] Fix deoptimization of boolean bit constants. (patchset #1 id:1 of https://code…

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 1012 matching lines @@
           (*types)[i] = MachineType::Pointer();
         } else {
           MachineRepresentation rep = input_type->IsInhabited()
                                           ? input_info->representation()
                                           : MachineRepresentation::kNone;
           MachineType machine_type(rep, DeoptValueSemanticOf(input_type));
           DCHECK(machine_type.representation() !=
                      MachineRepresentation::kWord32 ||
                  machine_type.semantic() == MachineSemantic::kInt32 ||
                  machine_type.semantic() == MachineSemantic::kUint32);
+          DCHECK(machine_type.representation() != MachineRepresentation::kBit ||
+                 input_type->Is(Type::Boolean()));
           (*types)[i] = machine_type;
         }
       }
       NodeProperties::ChangeOp(node,
                                jsgraph_->common()->TypedObjectState(types));
     }
     SetOutput(node, MachineRepresentation::kTagged);
   }
 
   const Operator* Int32Op(Node* node) {
@@ skipping 2362 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