[turbofan] Add backend support for float32.

src/compiler/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 "src/compiler/instruction-selector-unittest.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // -----------------------------------------------------------------------------
 // Conversions.
 
 
+TEST_F(InstructionSelectorTest, ChangeFloat32ToFloat64WithParameter) {
+  StreamBuilder m(this, kMachFloat32, kMachFloat64);
+  m.Return(m.ChangeFloat32ToFloat64(m.Parameter(0)));
+  Stream s = m.Build();
+  ASSERT_EQ(1U, s.size());
+  EXPECT_EQ(kSSECvtss2sd, s[0]->arch_opcode());
+  EXPECT_EQ(1U, s[0]->InputCount());
+  EXPECT_EQ(1U, s[0]->OutputCount());
+}
+
+
 TEST_F(InstructionSelectorTest, ChangeInt32ToInt64WithParameter) {
   StreamBuilder m(this, kMachInt64, kMachInt32);
   m.Return(m.ChangeInt32ToInt64(m.Parameter(0)));
   Stream s = m.Build();
   ASSERT_EQ(1U, s.size());
   EXPECT_EQ(kX64Movsxlq, s[0]->arch_opcode());
 }
 
 
 TEST_F(InstructionSelectorTest, ChangeUint32ToUint64WithParameter) {
   StreamBuilder m(this, kMachUint64, kMachUint32);
   m.Return(m.ChangeUint32ToUint64(m.Parameter(0)));
   Stream s = m.Build();
   ASSERT_EQ(1U, s.size());
   EXPECT_EQ(kX64Movl, s[0]->arch_opcode());
 }
 
 
+TEST_F(InstructionSelectorTest, TruncateFloat64ToFloat32WithParameter) {
+  StreamBuilder m(this, kMachFloat64, kMachFloat32);
+  m.Return(m.TruncateFloat64ToFloat32(m.Parameter(0)));
+  Stream s = m.Build();
+  ASSERT_EQ(1U, s.size());
+  EXPECT_EQ(kSSECvtsd2ss, s[0]->arch_opcode());
+  EXPECT_EQ(1U, s[0]->InputCount());
+  EXPECT_EQ(1U, s[0]->OutputCount());
+}
+
+
 TEST_F(InstructionSelectorTest, TruncateInt64ToInt32WithParameter) {
   StreamBuilder m(this, kMachInt32, kMachInt64);
   m.Return(m.TruncateInt64ToInt32(m.Parameter(0)));
   Stream s = m.Build();
   ASSERT_EQ(1U, s.size());
   EXPECT_EQ(kX64Movl, s[0]->arch_opcode());
 }
 
 
 // -----------------------------------------------------------------------------
@@ skipping 59 matching lines @@
 }
 
 
 INSTANTIATE_TEST_CASE_P(InstructionSelectorTest,
                         InstructionSelectorMemoryAccessTest,
                         ::testing::ValuesIn(kMemoryAccesses));
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8