Revert of Merged: Squashed multiple commits.

src/compiler/typed-optimization.cc

 // Copyright 2016 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/typed-optimization.h"
 
 #include "src/compilation-dependencies.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/simplified-operator.h"
@@ skipping 60 matching lines @@
         ReplaceWithValue(node, replacement);
         return Changed(replacement);
       }
     }
   }
   switch (node->opcode()) {
     case IrOpcode::kCheckHeapObject:
       return ReduceCheckHeapObject(node);
     case IrOpcode::kCheckMaps:
       return ReduceCheckMaps(node);
-    case IrOpcode::kCheckNumber:
-      return ReduceCheckNumber(node);
     case IrOpcode::kCheckString:
       return ReduceCheckString(node);
     case IrOpcode::kLoadField:
       return ReduceLoadField(node);
     case IrOpcode::kNumberCeil:
     case IrOpcode::kNumberRound:
     case IrOpcode::kNumberTrunc:
       return ReduceNumberRoundop(node);
     case IrOpcode::kNumberFloor:
       return ReduceNumberFloor(node);
@@ skipping 51 matching lines @@
           map_type->AsHeapConstant()->Value().is_identical_to(object_map)) {
         if (object_map->CanTransition()) {
           dependencies()->AssumeMapStable(object_map);
         }
         return Replace(effect);
       }
     }
   }
   return NoChange();
 }
-
-Reduction TypedOptimization::ReduceCheckNumber(Node* node) {
-  Node* const input = NodeProperties::GetValueInput(node, 0);
-  Type* const input_type = NodeProperties::GetType(input);
-  if (input_type->Is(Type::Number())) {
-    ReplaceWithValue(node, input);
-    return Replace(input);
-  }
-  return NoChange();
-}
 
 Reduction TypedOptimization::ReduceCheckString(Node* node) {
   Node* const input = NodeProperties::GetValueInput(node, 0);
   Type* const input_type = NodeProperties::GetType(input);
   if (input_type->Is(Type::String())) {
     ReplaceWithValue(node, input);
     return Replace(input);
   }
   return NoChange();
 }
@@ skipping 154 matching lines @@
 
 Isolate* TypedOptimization::isolate() const { return jsgraph()->isolate(); }
 
 SimplifiedOperatorBuilder* TypedOptimization::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8