[turbofan] Changed TruncateFloat64ToInt64 to TryTruncateFloat64ToInt64.

src/compiler/x64/instruction-selector-x64.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 <algorithm>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
@@ skipping 822 matching lines @@
   Emit(kSSEFloat64ToUint32, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitTruncateFloat32ToInt64(Node* node) {
   X64OperandGenerator g(this);
   Emit(kSSEFloat32ToInt64, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
 
 
-void InstructionSelector::VisitTruncateFloat64ToInt64(Node* node) {
+void InstructionSelector::VisitTryTruncateFloat64ToInt64(Node* node) {
   X64OperandGenerator g(this);
-  Emit(kSSEFloat64ToInt64, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
+  InstructionOperand inputs[] = {g.UseRegister(node->InputAt(0))};
+  InstructionOperand outputs[2];
+  size_t output_count = 0;
+  outputs[output_count++] = g.DefineAsRegister(node);
+
+  Node* success_output = NodeProperties::FindProjection(node, 1);
+  if (success_output) {
+    outputs[output_count++] = g.DefineAsRegister(success_output);
+  }
+
+  Emit(kSSEFloat64ToInt64, output_count, outputs, 1, inputs);
 }
 
 
 void InstructionSelector::VisitTruncateFloat32ToUint64(Node* node) {
   X64OperandGenerator g(this);
   Emit(kSSEFloat32ToUint64, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitTruncateFloat64ToUint64(Node* node) {
@@ skipping 591 matching lines @@
           Node* const node = value->InputAt(0);
           Node* const result = NodeProperties::FindProjection(node, 0);
           if (result == NULL || IsDefined(result)) {
             switch (node->opcode()) {
               case IrOpcode::kInt32AddWithOverflow:
                 cont.OverwriteAndNegateIfEqual(kOverflow);
                 return VisitBinop(this, node, kX64Add32, &cont);
               case IrOpcode::kInt32SubWithOverflow:
                 cont.OverwriteAndNegateIfEqual(kOverflow);
                 return VisitBinop(this, node, kX64Sub32, &cont);
+              case IrOpcode::kTryTruncateFloat64ToInt64:
+                return VisitTryTruncateFloat64ToInt64(result);
               default:
                 break;
             }
           }
         }
         break;
       case IrOpcode::kInt32Sub:
         return VisitWordCompare(this, value, kX64Cmp32, &cont);
       case IrOpcode::kInt64Sub:
         return VisitWord64Compare(this, value, &cont);
@@ skipping 264 matching lines @@
              MachineOperatorBuilder::kFloat64RoundTruncate |
              MachineOperatorBuilder::kFloat32RoundTiesEven |
              MachineOperatorBuilder::kFloat64RoundTiesEven;
   }
   return flags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8