[turbofan] Add TruncationMode for TruncateFloat64ToInt32.

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 761 matching lines @@
     default:
       V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
                node->opcode(), node->op()->mnemonic(), node->id());
       break;
   }
 }
 
 
 #if V8_TURBOFAN_BACKEND
 
-void InstructionSelector::VisitTruncateFloat64ToInt32(Node* node) {
-  OperandGenerator g(this);
-  Emit(kArchTruncateDoubleToI, g.DefineAsRegister(node),
-       g.UseRegister(node->InputAt(0)));
-}
-
-
 void InstructionSelector::VisitLoadStackPointer(Node* node) {
   OperandGenerator g(this);
   Emit(kArchStackPointer, g.DefineAsRegister(node));
 }
 
 
 void InstructionSelector::VisitLoadFramePointer(Node* node) {
   OperandGenerator g(this);
   Emit(kArchFramePointer, g.DefineAsRegister(node));
 }
@@ skipping 360 matching lines @@
 MachineOperatorBuilder::Flags
 InstructionSelector::SupportedMachineOperatorFlags() {
   return MachineOperatorBuilder::Flag::kNoFlags;
 }
 
 #endif  // !V8_TURBOFAN_BACKEND
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8