[turbofan] First shot at eager deoptimization in Turbofan.

src/compiler/verifier.cc

 // Copyright 2014 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/verifier.h"
 
 #include <algorithm>
 #include <deque>
 #include <queue>
 #include <sstream>
@@ skipping 264 matching lines @@
                NodeProperties::GetControlInput(node)->opcode());
       // Type is empty.
       CheckNotTyped(node);
       break;
     case IrOpcode::kLoop:
     case IrOpcode::kMerge:
       CHECK_EQ(control_count, input_count);
       // Type is empty.
       CheckNotTyped(node);
       break;
+    case IrOpcode::kDeoptimize:
+      // TODO(rossberg): check successor is End
+      // Type is empty.
+      CheckNotTyped(node);
     case IrOpcode::kReturn:
       // TODO(rossberg): check successor is End
       // Type is empty.
       CheckNotTyped(node);
       break;
     case IrOpcode::kThrow:
       // TODO(rossberg): what are the constraints on these?
       // Type is empty.
       CheckNotTyped(node);
       break;
@@ skipping 754 matching lines @@
     // Check inputs for all nodes in the block.
     for (size_t i = 0; i < block->NodeCount(); i++) {
       Node* node = block->NodeAt(i);
       CheckInputsDominate(schedule, block, node, static_cast<int>(i) - 1);
     }
   }
 }
 }
 }
 }  // namespace v8::internal::compiler