Model exceptional edges from call nodes in TurboFan.

src/compiler/js-intrinsic-lowering.cc

 // 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-intrinsic-lowering.h"
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties.h"
 
@@ skipping 127 matching lines @@
     Node* efalse1 = effect;
     Node* vfalse1 = value;
 
     Node* merge1 = graph()->NewNode(merge_op, if_true1, if_false1);
     efalse0 = graph()->NewNode(ephi_op, etrue1, efalse1, merge1);
     vfalse0 = graph()->NewNode(phi_op, vtrue1, vfalse1, merge1);
   }
 
   Node* merge0 = graph()->NewNode(merge_op, if_true0, if_false0);
 
-
   // Replace all effect uses of {node} with the {ephi0}.
   Node* ephi0 = graph()->NewNode(ephi_op, etrue0, efalse0, merge0);
   NodeProperties::ReplaceWithValue(node, node, ephi0);
 
   // Turn the {node} into a Phi.
   return Change(node, phi_op, vtrue0, vfalse0, merge0);
 }
 
 
 Reduction JSIntrinsicLowering::Change(Node* node, const Operator* op) {
-  // Remove the effects from the node and update its effect usages.
+  // Replace all effect uses of {node} with the effect dependency.
   NodeProperties::ReplaceWithValue(node, node);
   // Remove the inputs corresponding to context, effect and control.
   NodeProperties::RemoveNonValueInputs(node);
   // Finally update the operator to the new one.
   node->set_op(op);
   return Changed(node);
 }
 
 
 Reduction JSIntrinsicLowering::Change(Node* node, const Operator* op, Node* a,
@@ skipping 15 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSIntrinsicLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8