Add Float64Round 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 <deque>
 #include <queue>
 
 #include "src/compiler/generic-algorithm.h"
@@ skipping 630 matching lines @@
       case IrOpcode::kUint64LessThan:
       case IrOpcode::kFloat64Add:
       case IrOpcode::kFloat64Sub:
       case IrOpcode::kFloat64Mul:
       case IrOpcode::kFloat64Div:
       case IrOpcode::kFloat64Mod:
       case IrOpcode::kFloat64Sqrt:
       case IrOpcode::kFloat64Equal:
       case IrOpcode::kFloat64LessThan:
       case IrOpcode::kFloat64LessThanOrEqual:
+      case IrOpcode::kFloat64Floor:
+      case IrOpcode::kFloat64Ceil:
+      case IrOpcode::kFloat64RoundAwayFromZero:
+      case IrOpcode::kFloat64RoundToZero:
       case IrOpcode::kTruncateInt64ToInt32:
       case IrOpcode::kTruncateFloat64ToFloat32:
       case IrOpcode::kTruncateFloat64ToInt32:
       case IrOpcode::kChangeInt32ToInt64:
       case IrOpcode::kChangeUint32ToUint64:
       case IrOpcode::kChangeInt32ToFloat64:
       case IrOpcode::kChangeUint32ToFloat64:
       case IrOpcode::kChangeFloat32ToFloat64:
       case IrOpcode::kChangeFloat64ToInt32:
       case IrOpcode::kChangeFloat64ToUint32:
@@ skipping 249 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