[turbofan] Introduce prediction for exception handlers.

test/unittests/compiler/scheduler-unittest.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/access-builder.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node.h"
@@ skipping 1041 matching lines @@
 }
 
 
 TARGET_TEST_F(SchedulerTest, CallException) {
   Node* start = graph()->NewNode(common()->Start(1));
   graph()->SetStart(start);
 
   Node* p0 = graph()->NewNode(common()->Parameter(0), start);
   Node* c1 = graph()->NewNode(&kMockCall, start);
   Node* ok1 = graph()->NewNode(common()->IfSuccess(), c1);
-  Node* ex1 = graph()->NewNode(common()->IfException(), c1);
+  Node* ex1 = graph()->NewNode(
+      common()->IfException(IfExceptionHint::kLocallyUncaught), c1);
   Node* c2 = graph()->NewNode(&kMockCall, ok1);
   Node* ok2 = graph()->NewNode(common()->IfSuccess(), c2);
-  Node* ex2 = graph()->NewNode(common()->IfException(), c2);
+  Node* ex2 = graph()->NewNode(
+      common()->IfException(IfExceptionHint::kLocallyUncaught), c2);
   Node* hdl = graph()->NewNode(common()->Merge(2), ex1, ex2);
   Node* m = graph()->NewNode(common()->Merge(2), ok2, hdl);
   Node* phi = graph()->NewNode(common()->Phi(kMachAnyTagged, 2), c2, p0, m);
   Node* ret = graph()->NewNode(common()->Return(), phi, start, m);
   Node* end = graph()->NewNode(common()->End(1), ret);
 
   graph()->SetEnd(end);
 
   Schedule* schedule = ComputeAndVerifySchedule(17);
   // Make sure the exception blocks as well as the handler are deferred.
@@ skipping 82 matching lines @@
 
   Schedule* schedule = ComputeAndVerifySchedule(6);
   BasicBlock* block = schedule->block(loop);
   EXPECT_EQ(block, schedule->block(effect));
   EXPECT_GE(block->rpo_number(), 0);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8