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

test/compiler-unittests/x64/instruction-selector-x64-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 "test/compiler-unittests/instruction-selector-unittest.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 49 matching lines @@
 
 static const MemoryAccess kMemoryAccesses[] = {
     {kMachInt8, kX64Movsxbl, kX64Movb},
     {kMachUint8, kX64Movzxbl, kX64Movb},
     {kMachInt16, kX64Movsxwl, kX64Movw},
     {kMachUint16, kX64Movzxwl, kX64Movw},
     {kMachInt32, kX64Movl, kX64Movl},
     {kMachUint32, kX64Movl, kX64Movl},
     {kMachInt64, kX64Movq, kX64Movq},
     {kMachUint64, kX64Movq, kX64Movq},
+    {kMachFloat32, kX64Movss, kX64Movss},
     {kMachFloat64, kX64Movsd, kX64Movsd}};
 
 }  // namespace
 
 
 typedef InstructionSelectorTestWithParam<MemoryAccess>
     InstructionSelectorMemoryAccessTest;
 
 
 TEST_P(InstructionSelectorMemoryAccessTest, LoadWithParameters) {
@@ skipping 21 matching lines @@
 }
 
 
 INSTANTIATE_TEST_CASE_P(InstructionSelectorTest,
                         InstructionSelectorMemoryAccessTest,
                         ::testing::ValuesIn(kMemoryAccesses));
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8