[turbofan] Add TruncateFloat64ToInt32 machine operator.

test/compiler-unittests/machine-operator-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/machine-operator.h"
 #include "src/compiler/operator-properties-inl.h"
 #include "test/compiler-unittests/compiler-unittests.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using testing::IsNull;
@@ skipping 39 matching lines @@
 TEST_P(MachineOperatorCommonTest, ChangeUint32ToUint64) {
   Operator* op = machine()->ChangeUint32ToUint64();
   EXPECT_EQ(1, OperatorProperties::GetValueInputCount(op));
   EXPECT_EQ(1, OperatorProperties::GetTotalInputCount(op));
   EXPECT_EQ(0, OperatorProperties::GetControlOutputCount(op));
   EXPECT_EQ(0, OperatorProperties::GetEffectOutputCount(op));
   EXPECT_EQ(1, OperatorProperties::GetValueOutputCount(op));
 }
 
 
+TEST_P(MachineOperatorCommonTest, TruncateFloat64ToInt32) {
+  Operator* op = machine()->TruncateFloat64ToInt32();
+  EXPECT_EQ(1, OperatorProperties::GetValueInputCount(op));
+  EXPECT_EQ(1, OperatorProperties::GetTotalInputCount(op));
+  EXPECT_EQ(0, OperatorProperties::GetControlOutputCount(op));
+  EXPECT_EQ(0, OperatorProperties::GetEffectOutputCount(op));
+  EXPECT_EQ(1, OperatorProperties::GetValueOutputCount(op));
+}
+
+
 TEST_P(MachineOperatorCommonTest, TruncateInt64ToInt32) {
   Operator* op = machine()->TruncateInt64ToInt32();
   EXPECT_EQ(1, OperatorProperties::GetValueInputCount(op));
   EXPECT_EQ(1, OperatorProperties::GetTotalInputCount(op));
   EXPECT_EQ(0, OperatorProperties::GetControlOutputCount(op));
   EXPECT_EQ(0, OperatorProperties::GetEffectOutputCount(op));
   EXPECT_EQ(1, OperatorProperties::GetValueOutputCount(op));
 }
 
 
 INSTANTIATE_TEST_CASE_P(MachineOperatorTest, MachineOperatorCommonTest,
                         ::testing::Values(kRepWord32, kRepWord64));
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8