[turbofan] Add backend support for float32.

src/compiler/arm64/instruction-selector-arm64.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 414 matching lines @@
 void InstructionSelector::VisitInt32UMod(Node* node) {
   VisitRRR(this, kArm64Umod32, node);
 }
 
 
 void InstructionSelector::VisitInt64UMod(Node* node) {
   VisitRRR(this, kArm64Umod, node);
 }
 
 
+void InstructionSelector::VisitChangeFloat32ToFloat64(Node* node) {
+  Arm64OperandGenerator g(this);
+  Emit(kArm64Float32ToFloat64, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)));
+}
+
+
 void InstructionSelector::VisitChangeInt32ToFloat64(Node* node) {
   Arm64OperandGenerator g(this);
   Emit(kArm64Int32ToFloat64, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitChangeUint32ToFloat64(Node* node) {
   Arm64OperandGenerator g(this);
   Emit(kArm64Uint32ToFloat64, g.DefineAsRegister(node),
@@ skipping 20 matching lines @@
   Emit(kArm64Sxtw, g.DefineAsRegister(node), g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
   Arm64OperandGenerator g(this);
   Emit(kArm64Mov32, g.DefineAsRegister(node), g.UseRegister(node->InputAt(0)));
 }
 
 
+void InstructionSelector::VisitTruncateFloat64ToFloat32(Node* node) {
+  Arm64OperandGenerator g(this);
+  Emit(kArm64Float64ToFloat32, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)));
+}
+
+
 void InstructionSelector::VisitTruncateInt64ToInt32(Node* node) {
   Arm64OperandGenerator g(this);
   Emit(kArm64Mov32, g.DefineAsRegister(node), g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitFloat64Add(Node* node) {
   VisitRRRFloat64(this, kArm64Float64Add, node);
 }
 
@@ skipping 203 matching lines @@
   call_instr->MarkAsCall();
   if (deoptimization != NULL) {
     DCHECK(continuation != NULL);
     call_instr->MarkAsControl();
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8