[turbofan] Remove eager frame state from call nodes.

src/compiler/node-properties.h

 // 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.
 
 #ifndef V8_COMPILER_NODE_PROPERTIES_H_
 #define V8_COMPILER_NODE_PROPERTIES_H_
 
 #include "src/compiler/node.h"
 #include "src/types.h"
 
@@ skipping 66 matching lines @@
   static bool IsExceptionalCall(Node* node);
 
   // ---------------------------------------------------------------------------
   // Miscellaneous mutators.
 
   static void ReplaceValueInput(Node* node, Node* value, int index);
   static void ReplaceContextInput(Node* node, Node* context);
   static void ReplaceControlInput(Node* node, Node* control, int index = 0);
   static void ReplaceEffectInput(Node* node, Node* effect, int index = 0);
   static void ReplaceFrameStateInput(Node* node, int index, Node* frame_state);
-  static void RemoveFrameStateInput(Node* node, int index);
   static void RemoveNonValueInputs(Node* node);
   static void RemoveValueInputs(Node* node);
 
   // Replaces all value inputs of {node} with the single input {value}.
   static void ReplaceValueInputs(Node* node, Node* value);
 
   // Merge the control node {node} into the end of the graph, introducing a
   // merge node or expanding an existing merge node if necessary.
   static void MergeControlToEnd(Graph* graph, CommonOperatorBuilder* common,
                                 Node* node);
 
   // Replace all uses of {node} with the given replacement nodes. All occurring
   // use kinds need to be replaced, {nullptr} is only valid if a use kind is
   // guaranteed not to exist.
   static void ReplaceUses(Node* node, Node* value, Node* effect = nullptr,
                           Node* success = nullptr, Node* exception = nullptr);
 
   // Safe wrapper to mutate the operator of a node. Checks that the node is
   // currently in a state that satisfies constraints of the new operator.
   static void ChangeOp(Node* node, const Operator* new_op);
 
   // ---------------------------------------------------------------------------
   // Miscellaneous utilities.
 
+  // Find the last frame state that is effect-wise before the given node. This
+  // assumes a linear effect-chain up to a {CheckPoint} node in the graph.
+  static Node* FindFrameStateBefore(Node* node);
+
+  // Collect the output-value projection for the given output index.
   static Node* FindProjection(Node* node, size_t projection_index);
 
   // Collect the branch-related projections from a node, such as IfTrue,
   // IfFalse, IfSuccess, IfException, IfValue and IfDefault.
   //  - Branch: [ IfTrue, IfFalse ]
   //  - Call  : [ IfSuccess, IfException ]
   //  - Switch: [ IfValue, ..., IfDefault ]
   static void CollectControlProjections(Node* node, Node** proj, size_t count);
 
   // ---------------------------------------------------------------------------
@@ skipping 35 matching lines @@
 
  private:
   static inline bool IsInputRange(Edge edge, int first, int count);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_NODE_PROPERTIES_H_