[turbofan] Add operators for float32 support.

src/compiler/machine-operator-reducer-unittest.cc

Index: src/compiler/machine-operator-reducer-unittest.cc
diff --git a/src/compiler/machine-operator-reducer-unittest.cc b/src/compiler/machine-operator-reducer-unittest.cc
index 6b27b12670432e4f9a75ae358166d7a3637d4ab7..cad5112978a732d14ea15473040d1b3f06dbb518 100644
--- a/src/compiler/machine-operator-reducer-unittest.cc
+++ b/src/compiler/machine-operator-reducer-unittest.cc
@@ -46,6 +46,29 @@ class MachineOperatorReducerTestWithParam
 
 namespace {
 
+static const float kFloat32Values[] = {
+    -V8_INFINITY,  -2.70497e+38f, -1.4698e+37f,  -1.22813e+35f, -1.20555e+35f,
+    -1.34584e+34f, -1.0079e+32f,  -6.49364e+26f, -3.06077e+25f, -1.46821e+25f,
+    -1.17658e+23f, -1.9617e+22f,  -2.7357e+20f,  -1.48708e+13f, -1.89633e+12f,
+    -4.66622e+11f, -2.22581e+11f, -1.45381e+10f, -1.3956e+09f,  -1.32951e+09f,
+    -1.30721e+09f, -1.19756e+09f, -9.26822e+08f, -6.35647e+08f, -4.00037e+08f,
+    -1.81227e+08f, -5.09256e+07f, -964300.0f,    -192446.0f,    -28455.0f,
+    -27194.0f,     -26401.0f,     -20575.0f,     -17069.0f,     -9167.0f,
+    -960.178f,     -113.0f,       -62.0f,        -15.0f,        -7.0f,
+    -0.0256635f,   -4.60374e-07f, -3.63759e-10f, -4.30175e-14f, -5.27385e-15f,
+    -1.48084e-15f, -1.05755e-19f, -3.2995e-21f,  -1.67354e-23f, -1.11885e-23f,
+    -1.78506e-30f, -5.07594e-31f, -3.65799e-31f, -1.43718e-34f, -1.27126e-38f,
+    -0.0f,         0.0f,          1.17549e-38f,  1.56657e-37f,  4.08512e-29f,
+    3.31357e-28f,  6.25073e-22f,  4.1723e-13f,   1.44343e-09f,  5.27004e-08f,
+    9.48298e-08f,  5.57888e-07f,  4.89988e-05f,  0.244326f,     12.4895f,
+    19.0f,         47.0f,         106.0f,        538.324f,      564.536f,
+    819.124f,      7048.0f,       12611.0f,      19878.0f,      20309.0f,
+    797056.0f,     1.77219e+09f,  1.51116e+11f,  4.18193e+13f,  3.59167e+16f,
+    3.38211e+19f,  2.67488e+20f,  1.78831e+21f,  9.20914e+21f,  8.35654e+23f,
+    1.4495e+24f,   5.94015e+25f,  4.43608e+30f,  2.44502e+33f,  2.61152e+33f,
+    1.38178e+37f,  1.71306e+37f,  3.31899e+38f,  3.40282e+38f,  V8_INFINITY};
+
+
 static const double kFloat64Values[] = {
     -V8_INFINITY,  -4.23878e+275, -5.82632e+265, -6.60355e+220, -6.26172e+212,
     -2.56222e+211, -4.82408e+201, -1.84106e+157, -1.63662e+127, -1.55772e+100,
@@ -206,6 +229,20 @@ INSTANTIATE_TEST_CASE_P(MachineOperatorReducerTest,
 
 
 // -----------------------------------------------------------------------------
+// ChangeFloat64ToFloat32
+
+
+TEST_F(MachineOperatorReducerTest, ChangeFloat64ToFloat32WithConstant) {
+  TRACED_FOREACH(float, x, kFloat32Values) {
+    Reduction reduction = Reduce(graph()->NewNode(
+        machine()->ChangeFloat32ToFloat64(), Float32Constant(x)));
+    ASSERT_TRUE(reduction.Changed());
+    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(x));
+  }
+}
+
+
+// -----------------------------------------------------------------------------
 // ChangeFloat64ToInt32
 
 
@@ -315,6 +352,31 @@ TEST_F(MachineOperatorReducerTest, ChangeUint32ToUint64WithConstant) {
 
 
 // -----------------------------------------------------------------------------
+// TruncateFloat64ToFloat32
+
+
+TEST_F(MachineOperatorReducerTest,
+       TruncateFloat64ToFloat32WithChangeFloat32ToFloat64) {
+  Node* value = Parameter(0);
+  Reduction reduction = Reduce(graph()->NewNode(
+      machine()->TruncateFloat64ToFloat32(),
+      graph()->NewNode(machine()->ChangeFloat32ToFloat64(), value)));
+  ASSERT_TRUE(reduction.Changed());
+  EXPECT_EQ(value, reduction.replacement());
+}
+
+
+TEST_F(MachineOperatorReducerTest, TruncateFloat64ToFloat32WithConstant) {
+  TRACED_FOREACH(double, x, kFloat64Values) {
+    Reduction reduction = Reduce(graph()->NewNode(
+        machine()->TruncateFloat64ToFloat32(), Float64Constant(x)));
+    ASSERT_TRUE(reduction.Changed());
+    EXPECT_THAT(reduction.replacement(), IsFloat32Constant(DoubleToFloat32(x)));
+  }
+}
+
+
+// -----------------------------------------------------------------------------
 // TruncateFloat64ToInt32