[turbofan] Add proper conversion operators for int32<->int64.

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/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 495 matching lines @@
 
 
 void InstructionSelector::VisitChangeFloat64ToUint32(Node* node) {
   X64OperandGenerator g(this);
   // TODO(turbofan): X64 SSE cvttsd2siq should support operands.
   Emit(kSSEFloat64ToUint32, g.DefineAsRegister(node),
        g.UseDoubleRegister(node->InputAt(0)));
 }
 
 
+void InstructionSelector::VisitChangeInt32ToInt64(Node* node) {
+  X64OperandGenerator g(this);
+  Emit(kX64Movsxlq, g.DefineAsRegister(node), g.Use(node->InputAt(0)));
+}
+
+
+void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
+  X64OperandGenerator g(this);
+  Emit(kX64Movl, 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) {
   X64OperandGenerator g(this);
   Emit(kSSEFloat64Add, g.DefineSameAsFirst(node),
        g.UseDoubleRegister(node->InputAt(0)),
        g.UseDoubleRegister(node->InputAt(1)));
 }
 
 
 void InstructionSelector::VisitFloat64Sub(Node* node) {
   X64OperandGenerator g(this);
@@ skipping 21 matching lines @@
 
 void InstructionSelector::VisitFloat64Mod(Node* node) {
   X64OperandGenerator g(this);
   InstructionOperand* temps[] = {g.TempRegister(rax)};
   Emit(kSSEFloat64Mod, g.DefineSameAsFirst(node),
        g.UseDoubleRegister(node->InputAt(0)),
        g.UseDoubleRegister(node->InputAt(1)), 1, temps);
 }
 
 
-void InstructionSelector::VisitConvertInt64ToInt32(Node* node) {
-  X64OperandGenerator g(this);
-  // TODO(dcarney): other modes
-  Emit(kX64Int64ToInt32, g.DefineAsRegister(node),
-       g.UseRegister(node->InputAt(0)));
-}
-
-
-void InstructionSelector::VisitConvertInt32ToInt64(Node* node) {
-  X64OperandGenerator g(this);
-  // TODO(dcarney): other modes
-  Emit(kX64Int32ToInt64, g.DefineAsRegister(node),
-       g.UseRegister(node->InputAt(0)));
-}
-
-
 void InstructionSelector::VisitInt32AddWithOverflow(Node* node,
                                                     FlagsContinuation* cont) {
   VisitBinop(this, node, kX64Add32, cont);
 }
 
 
 void InstructionSelector::VisitInt32SubWithOverflow(Node* node,
                                                     FlagsContinuation* cont) {
   VisitBinop(this, node, kX64Sub32, cont);
 }
@@ skipping 143 matching lines @@
   if (descriptor->kind() == CallDescriptor::kCallAddress &&
       buffer.pushed_count > 0) {
     DCHECK(deoptimization == NULL && continuation == NULL);
     Emit(kPopStack | MiscField::encode(buffer.pushed_count), NULL);
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8