[turbofan] Connect non-terminating loops via Terminate.

src/compiler/scheduler.cc

 // 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.
 
 #include "src/compiler/scheduler.h"
 
 #include <iomanip>
 
 #include "src/base/adapters.h"
 #include "src/bit-vector.h"
@@ skipping 295 matching lines @@
       case IrOpcode::kEnd:
         FixNode(schedule_->end(), node);
         break;
       case IrOpcode::kStart:
         FixNode(schedule_->start(), node);
         break;
       case IrOpcode::kLoop:
       case IrOpcode::kMerge:
         BuildBlockForNode(node);
         break;
+      case IrOpcode::kTerminate: {
+        // Put Terminate in the loop to which it refers.
+        Node* loop = NodeProperties::GetControlInput(node);
+        BasicBlock* block = BuildBlockForNode(loop);
+        FixNode(block, node);
+        break;
+      }
       case IrOpcode::kBranch:
       case IrOpcode::kSwitch:
         BuildBlocksForSuccessors(node);
         break;
       case IrOpcode::kCall:
         if (NodeProperties::IsExceptionalCall(node)) {
           BuildBlocksForSuccessors(node);
         }
         break;
       default:
@@ skipping 1369 matching lines @@
   for (Node* const node : *nodes) {
     schedule_->SetBlockForNode(to, node);
     scheduled_nodes_[to->id().ToSize()].push_back(node);
   }
   nodes->clear();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8