[turbofan] Improve Node printing.

src/compiler/node.cc

 // Copyright 2013 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/node.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 282 matching lines @@
       return false;
     }
   }
   return mask == 3;
 }
 
 
 void Node::Print() const {
   OFStream os(stdout);
   os << *this << std::endl;
+  for (Node* input : this->inputs()) {
+    os << "  " << *input << std::endl;
+  }
 }
 
+std::ostream& operator<<(std::ostream& os, const Node& n) {
+  os << n.id() << ": " << *n.op();
+  if (n.InputCount() > 0) {
+    os << "(";
+    for (int i = 0; i < n.InputCount(); ++i) {
+      if (i != 0) os << ", ";
+      if (n.InputAt(i)) {
+        os << n.InputAt(i)->id();
+      } else {
+        os << "null";
+      }
+    }
+    os << ")";
+  }
+  return os;
+}
 
 Node::Node(NodeId id, const Operator* op, int inline_count, int inline_capacity)
     : op_(op),
       type_(nullptr),
       mark_(0),
       bit_field_(IdField::encode(id) | InlineCountField::encode(inline_count) |
                  InlineCapacityField::encode(inline_capacity)),
       first_use_(nullptr) {
   // Inputs must either be out of line or within the inline capacity.
   DCHECK(inline_capacity <= kMaxInlineCapacity);
@@ skipping 56 matching lines @@
       CHECK_EQ(index, edge.index());
       CHECK_EQ(this->InputAt(index), edge.to());
       index++;
     }
     CHECK_EQ(count, index);
     CHECK_EQ(this->InputCount(), index);
   }
 }
 #endif
 
-
-std::ostream& operator<<(std::ostream& os, const Node& n) {
-  os << n.id() << ": " << *n.op();
-  if (n.InputCount() > 0) {
-    os << "(";
-    for (int i = 0; i < n.InputCount(); ++i) {
-      if (i != 0) os << ", ";
-      if (n.InputAt(i)) {
-        os << n.InputAt(i)->id();
-      } else {
-        os << "null";
-      }
-    }
-    os << ")";
-  }
-  return os;
-}
-
-
 Node::InputEdges::iterator Node::InputEdges::iterator::operator++(int n) {
   iterator result(*this);
   ++(*this);
   return result;
 }
 
 
 Node::Inputs::const_iterator Node::Inputs::const_iterator::operator++(int n) {
   const_iterator result(*this);
   ++(*this);
@@ skipping 16 matching lines @@
   ++(*this);
   return result;
 }
 
 
 bool Node::Uses::empty() const { return begin() == end(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8