Add %_IncrementStatsCounter intrinsic.

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 "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
+#include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 JSIntrinsicLowering::JSIntrinsicLowering(JSGraph* jsgraph)
     : jsgraph_(jsgraph), simplified_(jsgraph->zone()) {}
 
 
 Reduction JSIntrinsicLowering::Reduce(Node* node) {
   if (node->opcode() != IrOpcode::kJSCallRuntime) return NoChange();
   const Runtime::Function* const f =
       Runtime::FunctionForId(CallRuntimeParametersOf(node->op()).id());
   if (f->intrinsic_type != Runtime::IntrinsicType::INLINE) return NoChange();
   switch (f->function_id) {
     case Runtime::kInlineConstructDouble:
       return ReduceConstructDouble(node);
     case Runtime::kInlineDeoptimizeNow:
       return ReduceDeoptimizeNow(node);
     case Runtime::kInlineDoubleHi:
       return ReduceDoubleHi(node);
     case Runtime::kInlineDoubleLo:
       return ReduceDoubleLo(node);
     case Runtime::kInlineHeapObjectGetMap:
       return ReduceHeapObjectGetMap(node);
+    case Runtime::kInlineIncrementStatsCounter:
+      return ReduceIncrementStatsCounter(node);
     case Runtime::kInlineIsArray:
       return ReduceIsInstanceType(node, JS_ARRAY_TYPE);
     case Runtime::kInlineIsFunction:
       return ReduceIsInstanceType(node, JS_FUNCTION_TYPE);
     case Runtime::kInlineIsNonNegativeSmi:
       return ReduceIsNonNegativeSmi(node);
     case Runtime::kInlineIsRegExp:
       return ReduceIsInstanceType(node, JS_REGEXP_TYPE);
     case Runtime::kInlineIsSmi:
       return ReduceIsSmi(node);
@@ skipping 83 matching lines @@
 
 Reduction JSIntrinsicLowering::ReduceHeapObjectGetMap(Node* node) {
   Node* value = NodeProperties::GetValueInput(node, 0);
   Node* effect = NodeProperties::GetEffectInput(node);
   Node* control = NodeProperties::GetControlInput(node);
   return Change(node, simplified()->LoadField(AccessBuilder::ForMap()), value,
                 effect, control);
 }
 
 
+Reduction JSIntrinsicLowering::ReduceIncrementStatsCounter(Node* node) {
+  if (!FLAG_native_code_counters) return ChangeToUndefined(node);
+  HeapObjectMatcher<String> m(NodeProperties::GetValueInput(node, 0));
+  if (!m.HasValue() || !m.Value().handle()->IsString()) {
+    return ChangeToUndefined(node);
+  }
+  SmartArrayPointer<char> name = m.Value().handle()->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;
   // }
   MachineType const type = static_cast<MachineType>(kTypeBool | kRepTagged);
 
   Node* value = NodeProperties::GetValueInput(node, 0);
@@ skipping 196 matching lines @@
   node->set_op(op);
   node->ReplaceInput(0, a);
   node->ReplaceInput(1, b);
   node->ReplaceInput(2, c);
   node->TrimInputCount(3);
   NodeProperties::ReplaceWithValue(node, node, node);
   return Changed(node);
 }
 
 
+Reduction JSIntrinsicLowering::ChangeToUndefined(Node* node, Node* effect) {
+  NodeProperties::ReplaceWithValue(node, jsgraph()->UndefinedConstant(),
+                                   effect);
+  return Changed(node);
+}
+
+
 Graph* JSIntrinsicLowering::graph() const { return jsgraph()->graph(); }
 
 
 CommonOperatorBuilder* JSIntrinsicLowering::common() const {
   return jsgraph()->common();
 }
 
 
 MachineOperatorBuilder* JSIntrinsicLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8