Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/compiler/js-frame-specialization.cc b/src/compiler/js-frame-specialization.cc
new file mode 100644
index 0000000..769d615
--- /dev/null
+++ b/src/compiler/js-frame-specialization.cc
@@ -0,0 +1,75 @@
+// 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-frame-specialization.h"
+
+#include "src/compiler/js-graph.h"
+#include "src/compiler/linkage.h"
+#include "src/frames-inl.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+Reduction JSFrameSpecialization::Reduce(Node* node) {
+ switch (node->opcode()) {
+ case IrOpcode::kOsrValue:
+ return ReduceOsrValue(node);
+ case IrOpcode::kParameter:
+ return ReduceParameter(node);
+ default:
+ break;
+ }
+ return NoChange();
+}
+
+
+Reduction JSFrameSpecialization::ReduceOsrValue(Node* node) {
+ DCHECK_EQ(IrOpcode::kOsrValue, node->opcode());
+ Handle<Object> value;
+ int const index = OpParameter<int>(node);
+ int const parameters_count = frame()->ComputeParametersCount() + 1;
+ if (index == Linkage::kOsrContextSpillSlotIndex) {
+ value = handle(frame()->context(), isolate());
+ } else if (index >= parameters_count) {
+ value = handle(frame()->GetExpression(index - parameters_count), isolate());
+ } else {
+ // The OsrValue index 0 is the receiver.
+ value =
+ handle(index ? frame()->GetParameter(index - 1) : frame()->receiver(),
+ isolate());
+ }
+ return Replace(jsgraph()->Constant(value));
+}
+
+
+Reduction JSFrameSpecialization::ReduceParameter(Node* node) {
+ DCHECK_EQ(IrOpcode::kParameter, node->opcode());
+ Handle<Object> value;
+ int const index = ParameterIndexOf(node->op());
+ int const parameters_count = frame()->ComputeParametersCount() + 1;
+ if (index == Linkage::kJSCallClosureParamIndex) {
+ // The Parameter index references the closure.
+ value = handle(frame()->function(), isolate());
+ } else if (index == Linkage::GetJSCallArgCountParamIndex(parameters_count)) {
+ // The Parameter index references the parameter count.
+ value = handle(Smi::FromInt(parameters_count - 1), isolate());
+ } else if (index == Linkage::GetJSCallContextParamIndex(parameters_count)) {
+ // The Parameter index references the context.
+ value = handle(frame()->context(), isolate());
+ } else {
+ // The Parameter index 0 is the receiver.
+ value =
+ handle(index ? frame()->GetParameter(index - 1) : frame()->receiver(),
+ isolate());
+ }
+ return Replace(jsgraph()->Constant(value));
+}
+
+
+Isolate* JSFrameSpecialization::isolate() const { return jsgraph()->isolate(); }
+
+} // namespace compiler
+} // namespace internal
+} // namespace v8