Implemented the RoundUint64ToFloat64 TurboFan operator for x64 and arm64.

src/compiler/instruction-selector.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/instruction-selector.h"
 
 #include <limits>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
@@ skipping 804 matching lines @@
     case IrOpcode::kTruncateFloat64ToInt32:
       return MarkAsWord32(node), VisitTruncateFloat64ToInt32(node);
     case IrOpcode::kTruncateInt64ToInt32:
       return MarkAsWord32(node), VisitTruncateInt64ToInt32(node);
     case IrOpcode::kRoundInt64ToFloat32:
       return MarkAsFloat32(node), VisitRoundInt64ToFloat32(node);
     case IrOpcode::kRoundInt64ToFloat64:
       return MarkAsFloat64(node), VisitRoundInt64ToFloat64(node);
     case IrOpcode::kBitcastFloat32ToInt32:
       return MarkAsWord32(node), VisitBitcastFloat32ToInt32(node);
+    case IrOpcode::kRoundUint64ToFloat64:
+      return MarkAsFloat64(node), VisitRoundUint64ToFloat64(node);
     case IrOpcode::kBitcastFloat64ToInt64:
       return MarkAsWord64(node), VisitBitcastFloat64ToInt64(node);
     case IrOpcode::kBitcastInt32ToFloat32:
       return MarkAsFloat32(node), VisitBitcastInt32ToFloat32(node);
     case IrOpcode::kBitcastInt64ToFloat64:
       return MarkAsFloat64(node), VisitBitcastInt64ToFloat64(node);
     case IrOpcode::kFloat32Add:
       return MarkAsFloat32(node), VisitFloat32Add(node);
     case IrOpcode::kFloat32Sub:
       return MarkAsFloat32(node), VisitFloat32Sub(node);
@@ skipping 211 matching lines @@
 void InstructionSelector::VisitRoundInt64ToFloat32(Node* node) {
   UNIMPLEMENTED();
 }
 
 
 void InstructionSelector::VisitRoundInt64ToFloat64(Node* node) {
   UNIMPLEMENTED();
 }
 
 
+void InstructionSelector::VisitRoundUint64ToFloat64(Node* node) {
+  UNIMPLEMENTED();
+}
+
+
 void InstructionSelector::VisitBitcastFloat64ToInt64(Node* node) {
   UNIMPLEMENTED();
 }
 
 
 void InstructionSelector::VisitBitcastInt64ToFloat64(Node* node) {
   UNIMPLEMENTED();
 }
 
 #endif  // V8_TARGET_ARCH_32_BIT
@@ skipping 294 matching lines @@
   return new (instruction_zone()) FrameStateDescriptor(
       instruction_zone(), state_info.type(), state_info.bailout_id(),
       state_info.state_combine(), parameters, locals, stack,
       state_info.shared_info(), outer_state);
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8