[intrinsics] Remove unused intrinsic %_IncrementStatsCounter.

src/compiler/js-intrinsic-lowering.cc

 // Copyright 2015 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-intrinsic-lowering.h"
 
 #include <stack>
 
 #include "src/code-factory.h"
 #include "src/compiler/access-builder.h"
@@ skipping 27 matching lines @@
     case Runtime::kInlineConstructDouble:
       return ReduceConstructDouble(node);
     case Runtime::kInlineCreateIterResultObject:
       return ReduceCreateIterResultObject(node);
     case Runtime::kInlineDeoptimizeNow:
       return ReduceDeoptimizeNow(node);
     case Runtime::kInlineDoubleHi:
       return ReduceDoubleHi(node);
     case Runtime::kInlineDoubleLo:
       return ReduceDoubleLo(node);
-    case Runtime::kInlineIncrementStatsCounter:
-      return ReduceIncrementStatsCounter(node);
     case Runtime::kInlineIsArray:
       return ReduceIsInstanceType(node, JS_ARRAY_TYPE);
     case Runtime::kInlineIsTypedArray:
       return ReduceIsInstanceType(node, JS_TYPED_ARRAY_TYPE);
     case Runtime::kInlineIsRegExp:
       return ReduceIsInstanceType(node, JS_REGEXP_TYPE);
     case Runtime::kInlineIsJSReceiver:
       return ReduceIsJSReceiver(node);
     case Runtime::kInlineIsSmi:
       return ReduceIsSmi(node);
@@ skipping 91 matching lines @@
 Reduction JSIntrinsicLowering::ReduceDoubleHi(Node* node) {
   return Change(node, machine()->Float64ExtractHighWord32());
 }
 
 
 Reduction JSIntrinsicLowering::ReduceDoubleLo(Node* node) {
   return Change(node, machine()->Float64ExtractLowWord32());
 }
 
 
-Reduction JSIntrinsicLowering::ReduceIncrementStatsCounter(Node* node) {
-  if (!FLAG_native_code_counters) return ChangeToUndefined(node);
-  HeapObjectMatcher m(NodeProperties::GetValueInput(node, 0));
-  if (!m.HasValue() || !m.Value()->IsString()) {
-    return ChangeToUndefined(node);
-  }
-  base::SmartArrayPointer<char> name =
-      Handle<String>::cast(m.Value())->ToCString();
-  StatsCounter counter(jsgraph()->isolate(), name.get());
-  if (!counter.Enabled()) return ChangeToUndefined(node);
-
-  Node* effect = NodeProperties::GetEffectInput(node);
-  Node* control = NodeProperties::GetControlInput(node);
-  FieldAccess access = AccessBuilder::ForStatsCounter();
-  Node* cnt = jsgraph()->ExternalConstant(ExternalReference(&counter));
-  Node* load =
-      graph()->NewNode(simplified()->LoadField(access), cnt, effect, control);
-  Node* inc =
-      graph()->NewNode(machine()->Int32Add(), load, jsgraph()->OneConstant());
-  Node* store = graph()->NewNode(simplified()->StoreField(access), cnt, inc,
-                                 load, control);
-  return ChangeToUndefined(node, store);
-}
-
-
 Reduction JSIntrinsicLowering::ReduceIsInstanceType(
     Node* node, InstanceType instance_type) {
   // if (%_IsSmi(value)) {
   //   return false;
   // } else {
   //   return %_GetInstanceType(%_GetMap(value)) == instance_type;
   // }
   Node* value = NodeProperties::GetValueInput(node, 0);
   Node* effect = NodeProperties::GetEffectInput(node);
   Node* control = NodeProperties::GetControlInput(node);
@@ skipping 407 matching lines @@
 }
 
 
 SimplifiedOperatorBuilder* JSIntrinsicLowering::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8