[arm] BitcastF32U32 uses float registers.

src/compiler/arm/instruction-selector-arm.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/base/adapters.h"
 #include "src/base/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
@@ skipping 1193 matching lines @@
 }
 
 void InstructionSelector::VisitTruncateFloat64ToWord32(Node* node) {
   VisitRR(this, kArchTruncateDoubleToI, node);
 }
 
 void InstructionSelector::VisitRoundFloat64ToInt32(Node* node) {
   VisitRR(this, kArmVcvtS32F64, node);
 }
 
-
 void InstructionSelector::VisitBitcastFloat32ToInt32(Node* node) {
   VisitRR(this, kArmVmovU32F32, node);
 }
 
-
 void InstructionSelector::VisitBitcastInt32ToFloat32(Node* node) {
-  ArmOperandGenerator g(this);
-  Emit(kArmVmovLowF64U32, g.DefineAsRegister(node),
-       ImmediateOperand(ImmediateOperand::INLINE, 0),
-       g.UseRegister(node->InputAt(0)));
+  VisitRR(this, kArmVmovF32U32, node);
 }
 
-
 void InstructionSelector::VisitFloat32Add(Node* node) {
   ArmOperandGenerator g(this);
   Float32BinopMatcher m(node);
   if (m.left().IsFloat32Mul() && CanCover(node, m.left().node())) {
     Float32BinopMatcher mleft(m.left().node());
     Emit(kArmVmlaF32, g.DefineSameAsFirst(node),
          g.UseRegister(m.right().node()), g.UseRegister(mleft.left().node()),
          g.UseRegister(mleft.right().node()));
     return;
   }
@@ skipping 759 matching lines @@
 // static
 MachineOperatorBuilder::AlignmentRequirements
 InstructionSelector::AlignmentRequirements() {
   return MachineOperatorBuilder::AlignmentRequirements::
       FullUnalignedAccessSupport();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8