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src/compiler/graph-replay.cc

Index: src/compiler/graph-replay.cc
diff --git a/src/compiler/graph-replay.cc b/src/compiler/graph-replay.cc
new file mode 100644
index 0000000000000000000000000000000000000000..efb1180a7777a027d76c2960f5de2feb31496ae8
--- /dev/null
+++ b/src/compiler/graph-replay.cc
@@ -0,0 +1,81 @@
+// Copyright 2014 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/graph-replay.h"
+
+#include "src/compiler/common-operator.h"
+#include "src/compiler/graph.h"
+#include "src/compiler/graph-inl.h"
+#include "src/compiler/node.h"
+#include "src/compiler/operator.h"
+#include "src/compiler/operator-properties-inl.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+#ifdef DEBUG
+
+void GraphReplayPrinter::PrintReplay(Graph* graph) {
+  GraphReplayPrinter replay;
+  PrintF("  Node* nil = graph.NewNode(common_builder.Dead());\n");
+  graph->VisitNodeInputsFromEnd(&replay);
+}
+
+
+GenericGraphVisit::Control GraphReplayPrinter::Pre(Node* node) {
+  PrintReplayOpCreator(node->op());
+  PrintF("  Node* n%d = graph.NewNode(op", node->id());
+  for (int i = 0; i < node->InputCount(); ++i) {
+    PrintF(", nil");
+  }
+  PrintF("); USE(n%d);\n", node->id());
+  return GenericGraphVisit::CONTINUE;
+}
+
+
+void GraphReplayPrinter::PostEdge(Node* from, int index, Node* to) {
+  PrintF("  n%d->ReplaceInput(%d, n%d);\n", from->id(), index, to->id());
+}
+
+
+void GraphReplayPrinter::PrintReplayOpCreator(Operator* op) {
+  IrOpcode::Value opcode = static_cast<IrOpcode::Value>(op->opcode());
+  const char* builder =
+      IrOpcode::IsCommonOpcode(opcode) ? "common_builder" : "js_builder";
+  const char* mnemonic = IrOpcode::IsCommonOpcode(opcode)
+                             ? IrOpcode::Mnemonic(opcode)
+                             : IrOpcode::Mnemonic(opcode) + 2;
+  PrintF("  op = %s.%s(", builder, mnemonic);
+  switch (opcode) {
+    case IrOpcode::kParameter:
+    case IrOpcode::kNumberConstant:
+      PrintF("0");
+      break;
+    case IrOpcode::kLoad:
+      PrintF("unique_name");
+      break;
+    case IrOpcode::kHeapConstant:
+      PrintF("unique_constant");
+      break;
+    case IrOpcode::kPhi:
+      PrintF("%d", op->InputCount());
+      break;
+    case IrOpcode::kEffectPhi:
+      PrintF("%d", OperatorProperties::GetEffectInputCount(op));
+      break;
+    case IrOpcode::kLoop:
+    case IrOpcode::kMerge:
+      PrintF("%d", OperatorProperties::GetControlInputCount(op));
+      break;
+    default:
+      break;
+  }
+  PrintF(");\n");
+}
+
+#endif  // DEBUG
+}
+}
+}  // namespace v8::internal::compiler