[Turbofan] Introduce OtherNumberConstant.

src/compiler/js-builtin-reducer.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/js-builtin-reducer.h"
 
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 312 matching lines @@
 
 bool HasInstanceTypeWitness(Node* receiver, Node* effect,
                             InstanceType instance_type) {
   for (Node* dominator = effect;;) {
     if (dominator->opcode() == IrOpcode::kCheckMaps &&
         dominator->InputAt(0) == receiver) {
       // Check if all maps have the given {instance_type}.
       for (int i = 1; i < dominator->op()->ValueInputCount(); ++i) {
         Node* const map = NodeProperties::GetValueInput(dominator, i);
         Type* const map_type = NodeProperties::GetType(map);
-        if (!map_type->IsConstant()) return false;
+        if (!map_type->IsHeapConstant()) return false;
         Handle<Map> const map_value =
-            Handle<Map>::cast(map_type->AsConstant()->Value());
+            Handle<Map>::cast(map_type->AsHeapConstant()->Value());
         if (map_value->instance_type() != instance_type) return false;
       }
       return true;
     }
     switch (dominator->opcode()) {
       case IrOpcode::kStoreField: {
         FieldAccess const& access = FieldAccessOf(dominator->op());
         if (access.base_is_tagged == kTaggedBase &&
             access.offset == HeapObject::kMapOffset) {
           return false;
@@ skipping 1043 matching lines @@
   return jsgraph()->simplified();
 }
 
 JSOperatorBuilder* JSBuiltinReducer::javascript() const {
   return jsgraph()->javascript();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8