Inline Array.prototype.forEach in TurboFan

src/compiler/frame-states.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/frame-states.h"
 
 #include "src/base/functional.h"
+#include "src/callable.h"
+#include "src/compiler/graph.h"
+#include "src/compiler/js-graph.h"
+#include "src/compiler/node.h"
 #include "src/handles-inl.h"
 #include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 size_t hash_value(OutputFrameStateCombine const& sc) {
   return base::hash_combine(sc.kind_, sc.parameter_);
 }
@@ skipping 40 matching lines @@
       break;
     case FrameStateType::kArgumentsAdaptor:
       os << "ARGUMENTS_ADAPTOR";
       break;
     case FrameStateType::kTailCallerFunction:
       os << "TAIL_CALLER_FRAME";
       break;
     case FrameStateType::kConstructStub:
       os << "CONSTRUCT_STUB";
       break;
+    case FrameStateType::kBuiltinContinuation:
+      os << "BUILTIN_CONTINUATION_FRAME";
+      break;
     case FrameStateType::kGetterStub:
       os << "GETTER_STUB";
       break;
     case FrameStateType::kSetterStub:
       os << "SETTER_STUB";
       break;
   }
   return os;
 }
 
 
 std::ostream& operator<<(std::ostream& os, FrameStateInfo const& info) {
   os << info.type() << ", " << info.bailout_id() << ", "
      << info.state_combine();
   Handle<SharedFunctionInfo> shared_info;
   if (info.shared_info().ToHandle(&shared_info)) {
     os << ", " << Brief(*shared_info);
   }
   return os;
 }
 
+namespace {
+Node* CreateBuiltinContinuationFrameStateCommon(
+    JSGraph* js_graph, Builtins::Name name, Node** parameters,
+    int parameter_count, Node* outer_frame_state,
+    Handle<SharedFunctionInfo> shared) {
+  Isolate* isolate = js_graph->isolate();
+  Graph* graph = js_graph->graph();
+  CommonOperatorBuilder* common = js_graph->common();
+
+  BailoutId bailout_id = Builtins::GetContinuationBailoutId(name);
+  Callable callable = Builtins::CallableFor(isolate, name);
+
+  const Operator* op_param =
+      common->StateValues(parameter_count, SparseInputMask::Dense());
+  Node* params_node = graph->NewNode(op_param, parameter_count, parameters);
+
+  const FrameStateFunctionInfo* state_info =
+      common->CreateFrameStateFunctionInfo(FrameStateType::kBuiltinContinuation,
+                                           parameter_count, 0, shared);
+  const Operator* op = common->FrameState(
+      bailout_id, OutputFrameStateCombine::Ignore(), state_info);
+  const Operator* op0 = common->StateValues(0, SparseInputMask::Dense());
+  Node* node0 = graph->NewNode(op0);
+
+  Node* frame_state = graph->NewNode(
+      op, params_node, node0, node0, js_graph->UndefinedConstant(),

[Jarin, 2017/05/24 06:41:22]

node0 --> js_graph->EmptyStateValues()

[danno, 2017/06/06 12:04:52]

Done.

+      js_graph->UndefinedConstant(), outer_frame_state);
+
+  return frame_state;
+}
+
+}  // namespace
+
+Node* CreateStubBuiltinContinuationFrameState(JSGraph* js_graph,
+                                              Builtins::Name name,
+                                              Node* context, Node** parameters,
+                                              int parameter_count,
+                                              Node* outer_frame_state,
+                                              ContinuationFrameStateMode mode) {
+  Isolate* isolate = js_graph->isolate();
+  Callable callable = Builtins::CallableFor(isolate, name);
+  CallInterfaceDescriptor descriptor = callable.descriptor();
+
+  std::vector<Node*> actual_parameters;
+  if (descriptor.GetRegisterParameterCount() == 0) {
+    actual_parameters.push_back(context);
+  }
+  for (int i = 0; i < parameter_count; ++i) {
+    actual_parameters.push_back(parameters[i]);
+    if (i == descriptor.GetRegisterParameterCount() - 1) {
+      actual_parameters.push_back(context);
+    }
+  }
+
+  return CreateBuiltinContinuationFrameStateCommon(
+      js_graph, name, &actual_parameters[0],
+      static_cast<int>(actual_parameters.size()), outer_frame_state,
+      Handle<SharedFunctionInfo>());
+}
+
+Node* CreateJavaScriptBuiltinContinuationFrameState(
+    JSGraph* js_graph, Handle<SharedFunctionInfo> shared, Builtins::Name name,
+    Node* target, Node* context, Node** stack_parameters,
+    int stack_parameter_count, Node* outer_frame_state,
+    ContinuationFrameStateMode mode) {
+  Isolate* isolate = js_graph->isolate();
+  Callable callable = Builtins::CallableFor(isolate, name);
+
+  // Lazy deopt points where the frame state is assocated with a call get an
+  // additional parameter for the return result from the call that's added by
+  // the deoptimizer and not explicitly specified in the frame state. Check that
+  // there is not a mismatch between the number of frame state parameters and
+  // the stack parameters required by the builtin taking this into account.
+  DCHECK_EQ(
+      Builtins::GetStackParameterCount(isolate, name) + 1,  // add receiver
+      stack_parameter_count +
+          (mode == ContinuationFrameStateMode::EAGER ? 0 : 1));
+
+  Node* argc =
+      js_graph->Constant(stack_parameter_count -
+                         (mode == ContinuationFrameStateMode::EAGER ? 1 : 0));
+  std::vector<Node*> actual_parameters(
+      {target, js_graph->UndefinedConstant(), argc, context});
+
+  for (int i = 0; i < stack_parameter_count; ++i) {
+    actual_parameters.push_back(stack_parameters[i]);
+  }
+
+  return CreateBuiltinContinuationFrameStateCommon(
+      js_graph, name, &actual_parameters[0],
+      static_cast<int>(actual_parameters.size()), outer_frame_state, shared);
+}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8