[turbofan] Add SimplifiedOperator::Allocate operator.

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 617 matching lines @@
       break;
     }
     case IrOpcode::kObjectIsSmi:
       CheckValueInputIs(node, 0, Type::Any());
       CheckUpperIs(node, Type::Boolean());
       break;
     case IrOpcode::kObjectIsNonNegativeSmi:
       CheckValueInputIs(node, 0, Type::Any());
       CheckUpperIs(node, Type::Boolean());
       break;
+    case IrOpcode::kAllocate:
+      CheckValueInputIs(node, 0, Type::PlainNumber());
+      CheckUpperIs(node, Type::TaggedPointer());
+      break;
 
     case IrOpcode::kChangeTaggedToInt32: {
       // Signed32 /\ Tagged -> Signed32 /\ UntaggedInt32
       // TODO(neis): Activate once ChangeRepresentation works in typer.
       // Type* from = Type::Intersect(Type::Signed32(), Type::Tagged());
       // Type* to = Type::Intersect(Type::Signed32(), Type::UntaggedInt32());
       // CheckValueInputIs(node, 0, from));
       // CheckUpperIs(node, to));
       break;
     }
@@ skipping 442 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