Model exceptional edges from call nodes in TurboFan.

src/compiler/schedule.cc

Index: src/compiler/schedule.cc
diff --git a/src/compiler/schedule.cc b/src/compiler/schedule.cc
index 8924ae54401a0c8919281228d7f7bdd70a8adfd9..743e6803eac3170a282ce248f6181270589ed8e5 100644
--- a/src/compiler/schedule.cc
+++ b/src/compiler/schedule.cc
@@ -100,6 +100,8 @@ std::ostream& operator<<(std::ostream& os, const BasicBlock::Control& c) {
       return os << "none";
     case BasicBlock::kGoto:
       return os << "goto";
+    case BasicBlock::kCall:
+      return os << "call";
     case BasicBlock::kBranch:
       return os << "branch";
     case BasicBlock::kSwitch:
@@ -200,6 +202,17 @@ void Schedule::AddGoto(BasicBlock* block, BasicBlock* succ) {
 }
 
 
+void Schedule::AddCall(BasicBlock* block, Node* call, BasicBlock* success_block,
+                       BasicBlock* exception_block) {
+  DCHECK(block->control() == BasicBlock::kNone);
+  DCHECK(call->opcode() == IrOpcode::kCall);
+  block->set_control(BasicBlock::kCall);
+  AddSuccessor(block, success_block);
+  AddSuccessor(block, exception_block);
+  SetControlInput(block, call);
+}
+
+
 void Schedule::AddBranch(BasicBlock* block, Node* branch, BasicBlock* tblock,
                          BasicBlock* fblock) {
   DCHECK(block->control() == BasicBlock::kNone);