[turbofan] Add backend support for load/store float32 values.

test/compiler-unittests/arm64/instruction-selector-arm64-unittest.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 <list>
 
 #include "test/compiler-unittests/instruction-selector-unittest.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 312 matching lines @@
 
 static const MemoryAccess kMemoryAccesses[] = {
     {kMachInt8, kArm64Ldrsb, kArm64Strb},
     {kMachUint8, kArm64Ldrb, kArm64Strb},
     {kMachInt16, kArm64Ldrsh, kArm64Strh},
     {kMachUint16, kArm64Ldrh, kArm64Strh},
     {kMachInt32, kArm64LdrW, kArm64StrW},
     {kMachUint32, kArm64LdrW, kArm64StrW},
     {kMachInt64, kArm64Ldr, kArm64Str},
     {kMachUint64, kArm64Ldr, kArm64Str},
+    {kMachFloat32, kArm64LdrS, kArm64StrS},
     {kMachFloat64, kArm64LdrD, kArm64StrD}};
 
 
 typedef InstructionSelectorTestWithParam<MemoryAccess>
     InstructionSelectorMemoryAccessTest;
 
 
 TEST_P(InstructionSelectorMemoryAccessTest, LoadWithParameters) {
   const MemoryAccess memacc = GetParam();
   StreamBuilder m(this, memacc.type, kMachPtr, kMachInt32);
@@ skipping 21 matching lines @@
 }
 
 
 INSTANTIATE_TEST_CASE_P(InstructionSelectorTest,
                         InstructionSelectorMemoryAccessTest,
                         ::testing::ValuesIn(kMemoryAccesses));
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8