[turbofan] IA: TruncateFloat64ToFloat32 supports mem operand

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 "src/compiler/generic-node-inl.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 633 matching lines @@
 
 
 void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
   X64OperandGenerator g(this);
   Emit(kX64Movl, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitTruncateFloat64ToFloat32(Node* node) {
   X64OperandGenerator g(this);
-  // TODO(turbofan): X64 SSE conversions should take an operand.
-  Emit(kSSECvtsd2ss, g.DefineAsRegister(node), g.UseRegister(node->InputAt(0)));
+  Emit(kSSECvtsd2ss, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitTruncateInt64ToInt32(Node* node) {
   X64OperandGenerator g(this);
   Emit(kX64Movl, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitFloat64Add(Node* node) {
@@ skipping 186 matching lines @@
   call_instr->MarkAsCall();
   if (deoptimization != NULL) {
     DCHECK(continuation != NULL);
     call_instr->MarkAsControl();
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8