[turbofan] Add backend support for float32.

src/compiler/arm/instruction-selector-arm-unittest.cc

Index: src/compiler/arm/instruction-selector-arm-unittest.cc
diff --git a/src/compiler/arm/instruction-selector-arm-unittest.cc b/src/compiler/arm/instruction-selector-arm-unittest.cc
index 208d2e9705b6ec2771ca760b661267d8e1ba59b0..ec5eaf3b5f9747d8c68146d4381a23ae7058a777 100644
--- a/src/compiler/arm/instruction-selector-arm-unittest.cc
+++ b/src/compiler/arm/instruction-selector-arm-unittest.cc
@@ -1247,15 +1247,15 @@ static const MemoryAccess kMemoryAccesses[] = {
       -80, -72, -71, -56, -25, -21, -11, -9, 0, 3, 5, 27, 28, 42, 52, 63, 88,
       93, 97, 125, 846, 1037, 2102, 2403, 2597, 2632, 2997, 3935, 4095}},
     {kMachFloat32,
-     kArmVldr32,
-     kArmVstr32,
+     kArmVldrF32,
+     kArmVstrF32,
      &InstructionSelectorTest::Stream::IsDouble,
      {-1020, -928, -896, -772, -728, -680, -660, -488, -372, -112, -100, -92,
       -84, -80, -72, -64, -60, -56, -52, -48, -36, -32, -20, -8, -4, 0, 8, 20,
       24, 40, 64, 112, 204, 388, 516, 852, 856, 976, 988, 1020}},
     {kMachFloat64,
-     kArmVldr64,
-     kArmVstr64,
+     kArmVldrF64,
+     kArmVstrF64,
      &InstructionSelectorTest::Stream::IsDouble,
      {-1020, -948, -796, -696, -612, -364, -320, -308, -128, -112, -108, -104,
       -96, -84, -80, -56, -48, -40, -20, 0, 24, 28, 36, 48, 64, 84, 96, 100,
@@ -1339,6 +1339,32 @@ INSTANTIATE_TEST_CASE_P(InstructionSelectorTest,
 
 
 // -----------------------------------------------------------------------------
+// Conversions.
+
+
+TEST_F(InstructionSelectorTest, ChangeFloat32ToFloat64WithParameter) {
+  StreamBuilder m(this, kMachFloat64, kMachFloat32);
+  m.Return(m.ChangeFloat32ToFloat64(m.Parameter(0)));
+  Stream s = m.Build();
+  ASSERT_EQ(1U, s.size());
+  EXPECT_EQ(kArmVcvtF64F32, s[0]->arch_opcode());
+  EXPECT_EQ(1U, s[0]->InputCount());
+  EXPECT_EQ(1U, s[0]->OutputCount());
+}
+
+
+TEST_F(InstructionSelectorTest, TruncateFloat64ToFloat32WithParameter) {
+  StreamBuilder m(this, kMachFloat32, kMachFloat64);
+  m.Return(m.TruncateFloat64ToFloat32(m.Parameter(0)));
+  Stream s = m.Build();
+  ASSERT_EQ(1U, s.size());
+  EXPECT_EQ(kArmVcvtF32F64, s[0]->arch_opcode());
+  EXPECT_EQ(1U, s[0]->InputCount());
+  EXPECT_EQ(1U, s[0]->OutputCount());
+}
+
+
+// -----------------------------------------------------------------------------
 // Miscellaneous.
 
 
@@ -1895,6 +1921,7 @@ TEST_F(InstructionSelectorTest, Word32AndWithWord32ShrWithImmediateForARMv7) {
     }
   }
 }
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8