[turbofan] Move node verification methods to the Verifier class.

Review URL: https://codereview.chromium.org/1367423002

Cr-Commit-Position: refs/heads/master@{#30962}

src/compiler/graph-reducer.cc

@@ -9,6 +9,7 @@
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-properties.h"
+#include "src/compiler/verifier.h"
 
 namespace v8 {
 namespace internal {
@@ -159,22 +160,6 @@ void GraphReducer::Replace(Node* node, Node* replacement) {
 }
 
 
-namespace {
-
-
-void VerifyUseReplacement(const Edge& edge, const Node* replacement) {
-  // Check that the user does not misuse the replacement.
-  DCHECK(!NodeProperties::IsControlEdge(edge) ||
-         replacement->op()->ControlOutputCount() > 0);
-  DCHECK(!NodeProperties::IsEffectEdge(edge) ||
-         replacement->op()->EffectOutputCount() > 0);
-  DCHECK(!NodeProperties::IsFrameStateEdge(edge) ||
-         replacement->opcode() == IrOpcode::kFrameState);
-}
-
-}  // namespace
-
-
 void GraphReducer::Replace(Node* node, Node* replacement, NodeId max_id) {
   if (node == graph()->start()) graph()->SetStart(replacement);
   if (node == graph()->end()) graph()->SetEnd(replacement);
@@ -183,7 +168,7 @@ void GraphReducer::Replace(Node* node, Node* replacement, NodeId max_id) {
     // {replacement} was already reduced and finish.
     for (Edge edge : node->use_edges()) {
       Node* const user = edge.from();
-      VerifyUseReplacement(edge, replacement);
+      Verifier::VerifyEdgeInputReplacement(edge, replacement);
       edge.UpdateTo(replacement);
       // Don't revisit this node if it refers to itself.
       if (user != node) Revisit(user);

src/compiler/graph.cc

@@ -9,6 +9,7 @@
 #include "src/base/bits.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-properties.h"
+#include "src/compiler/verifier.h"
 
 namespace v8 {
 namespace internal {
@@ -45,9 +46,7 @@ void Graph::RemoveDecorator(GraphDecorator* decorator) {
 Node* Graph::NewNode(const Operator* op, int input_count, Node** inputs,
                      bool incomplete) {
   Node* node = NewNodeUnchecked(op, input_count, inputs, incomplete);
-#ifdef DEBUG
-  NodeProperties::Verify(node);
-#endif  // DEBUG
+  Verifier::VerifyNode(node);
   return node;
 }
 

src/compiler/node-properties.cc

@@ -6,6 +6,7 @@
 #include "src/compiler/graph.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/operator-properties.h"
+#include "src/compiler/verifier.h"
 
 namespace v8 {
 namespace internal {
@@ -198,10 +199,7 @@ void NodeProperties::ReplaceUses(Node* node, Node* value, Node* effect,
 // static
 void NodeProperties::ChangeOp(Node* node, const Operator* new_op) {
   node->set_op(new_op);
-
-#ifdef DEBUG
-  Verify(node);
-#endif  // DEBUG
+  Verifier::VerifyNode(node);
 }
 
 
@@ -270,51 +268,6 @@ void NodeProperties::CollectControlProjections(Node* node, Node** projections,
 }
 
 
-// static
-void NodeProperties::Verify(Node* node) {
-  CHECK_EQ(OperatorProperties::GetTotalInputCount(node->op()),
-           node->InputCount());
-  // If this node has no effect or no control outputs,
-  // we check that no its uses are effect or control inputs.
-  bool check_no_control = node->op()->ControlOutputCount() == 0;
-  bool check_no_effect = node->op()->EffectOutputCount() == 0;
-  bool check_no_frame_state = node->opcode() != IrOpcode::kFrameState;
-  if (check_no_effect || check_no_control) {
-    for (Edge edge : node->use_edges()) {
-      Node* const user = edge.from();
-      CHECK(!user->IsDead());
-      if (NodeProperties::IsControlEdge(edge)) {
-        CHECK(!check_no_control);
-      } else if (NodeProperties::IsEffectEdge(edge)) {
-        CHECK(!check_no_effect);
-      } else if (NodeProperties::IsFrameStateEdge(edge)) {
-        CHECK(!check_no_frame_state);
-      }
-    }
-  }
-  // Frame state inputs should be frame states (or sentinels).
-  for (int i = 0; i < OperatorProperties::GetFrameStateInputCount(node->op());
-       i++) {
-    Node* input = NodeProperties::GetFrameStateInput(node, i);
-    CHECK(input->opcode() == IrOpcode::kFrameState ||
-          input->opcode() == IrOpcode::kStart ||
-          input->opcode() == IrOpcode::kDead);
-  }
-  // Effect inputs should be effect-producing nodes (or sentinels).
-  for (int i = 0; i < node->op()->EffectInputCount(); i++) {
-    Node* input = NodeProperties::GetEffectInput(node, i);
-    CHECK(input->op()->EffectOutputCount() > 0 ||
-          input->opcode() == IrOpcode::kDead);
-  }
-  // Control inputs should be control-producing nodes (or sentinels).
-  for (int i = 0; i < node->op()->ControlInputCount(); i++) {
-    Node* input = NodeProperties::GetControlInput(node, i);
-    CHECK(input->op()->ControlOutputCount() > 0 ||
-          input->opcode() == IrOpcode::kDead);
-  }
-}
-
-
 // static
 bool NodeProperties::AllValueInputsAreTyped(Node* node) {
   int input_count = node->op()->ValueInputCount();

src/compiler/node-properties.h

@@ -110,17 +110,6 @@ class NodeProperties final {
   //  - Switch: [ IfValue, ..., IfDefault ]
   static void CollectControlProjections(Node* node, Node** proj, size_t count);
 
-  // Verifies consistency of node inputs and uses:
-  // - node inputs should agree with the input count computed from
-  //   the node's operator.
-  // - effect inputs should have effect outputs.
-  // - control inputs should have control outputs.
-  // - frame state inputs should be frame states.
-  // - if the node has control uses, it should produce control.
-  // - if the node has effect uses, it should produce effect.
-  // - if the node has frame state uses, it must be a frame state.
-  static void Verify(Node* node);
-
   // ---------------------------------------------------------------------------
   // Type.
 

src/compiler/verifier.cc

@@ -1154,6 +1154,68 @@ void ScheduleVerifier::Run(Schedule* schedule) {
     }
   }
 }
+
+
+#ifdef DEBUG
+
+// static
+void Verifier::VerifyNode(Node* node) {
+  CHECK_EQ(OperatorProperties::GetTotalInputCount(node->op()),
+           node->InputCount());
+  // If this node has no effect or no control outputs,
+  // we check that no its uses are effect or control inputs.
+  bool check_no_control = node->op()->ControlOutputCount() == 0;
+  bool check_no_effect = node->op()->EffectOutputCount() == 0;
+  bool check_no_frame_state = node->opcode() != IrOpcode::kFrameState;
+  if (check_no_effect || check_no_control) {
+    for (Edge edge : node->use_edges()) {
+      Node* const user = edge.from();
+      CHECK(!user->IsDead());
+      if (NodeProperties::IsControlEdge(edge)) {
+        CHECK(!check_no_control);
+      } else if (NodeProperties::IsEffectEdge(edge)) {
+        CHECK(!check_no_effect);
+      } else if (NodeProperties::IsFrameStateEdge(edge)) {
+        CHECK(!check_no_frame_state);
+      }
+    }
+  }
+  // Frame state inputs should be frame states (or sentinels).
+  for (int i = 0; i < OperatorProperties::GetFrameStateInputCount(node->op());
+       i++) {
+    Node* input = NodeProperties::GetFrameStateInput(node, i);
+    CHECK(input->opcode() == IrOpcode::kFrameState ||
+          input->opcode() == IrOpcode::kStart ||
+          input->opcode() == IrOpcode::kDead);
+  }
+  // Effect inputs should be effect-producing nodes (or sentinels).
+  for (int i = 0; i < node->op()->EffectInputCount(); i++) {
+    Node* input = NodeProperties::GetEffectInput(node, i);
+    CHECK(input->op()->EffectOutputCount() > 0 ||
+          input->opcode() == IrOpcode::kDead);
+  }
+  // Control inputs should be control-producing nodes (or sentinels).
+  for (int i = 0; i < node->op()->ControlInputCount(); i++) {
+    Node* input = NodeProperties::GetControlInput(node, i);
+    CHECK(input->op()->ControlOutputCount() > 0 ||
+          input->opcode() == IrOpcode::kDead);
+  }
+}
+
+
+void Verifier::VerifyEdgeInputReplacement(const Edge& edge,
+                                          const Node* replacement) {
+  // Check that the user does not misuse the replacement.
+  DCHECK(!NodeProperties::IsControlEdge(edge) ||
+         replacement->op()->ControlOutputCount() > 0);
+  DCHECK(!NodeProperties::IsEffectEdge(edge) ||
+         replacement->op()->EffectOutputCount() > 0);
+  DCHECK(!NodeProperties::IsFrameStateEdge(edge) ||
+         replacement->opcode() == IrOpcode::kFrameState);
+}
+
+#endif  // DEBUG
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8

src/compiler/verifier.h

@@ -12,6 +12,8 @@ namespace internal {
 namespace compiler {
 
 class Graph;
+class Edge;
+class Node;
 class Schedule;
 
 // Verifies properties of a graph, such as the well-formedness of inputs to
@@ -22,6 +24,28 @@ class Verifier {
 
   static void Run(Graph* graph, Typing typing = TYPED);
 
+#ifdef DEBUG
+  // Verifies consistency of node inputs and uses:
+  // - node inputs should agree with the input count computed from
+  //   the node's operator.
+  // - effect inputs should have effect outputs.
+  // - control inputs should have control outputs.
+  // - frame state inputs should be frame states.
+  // - if the node has control uses, it should produce control.
+  // - if the node has effect uses, it should produce effect.
+  // - if the node has frame state uses, it must be a frame state.
+  static void VerifyNode(Node* node);
+
+  // Verify that {replacement} has the required outputs
+  // (effect, control or frame state) to be used as an input for {edge}.
+  static void VerifyEdgeInputReplacement(const Edge& edge,
+                                         const Node* replacement);
+#else
+  static void VerifyNode(Node* node) {}
+  static void VerifyEdgeInputReplacement(const Edge& edge,
+                                         const Node* replacement) {}
+#endif  // DEBUG
+
  private:
   class Visitor;
   DISALLOW_COPY_AND_ASSIGN(Verifier);