[turbofan] Add TruncationMode for TruncateFloat64ToInt32.

test/unittests/compiler/machine-operator-reducer-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/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator-reducer.h"
 #include "src/compiler/typer.h"
 #include "test/unittests/compiler/graph-unittest.h"
@@ skipping 216 matching lines @@
     0x00000000, 0x00000001, 0xffffffff, 0x1b09788b, 0x04c5fce8, 0xcc0de5bf,
     0x273a798e, 0x187937a3, 0xece3af83, 0x5495a16b, 0x0b668ecc, 0x11223344,
     0x0000009e, 0x00000043, 0x0000af73, 0x0000116b, 0x00658ecc, 0x002b3b4c,
     0x88776655, 0x70000000, 0x07200000, 0x7fffffff, 0x56123761, 0x7fffff00,
     0x761c4761, 0x80000000, 0x88888888, 0xa0000000, 0xdddddddd, 0xe0000000,
     0xeeeeeeee, 0xfffffffd, 0xf0000000, 0x007fffff, 0x003fffff, 0x001fffff,
     0x000fffff, 0x0007ffff, 0x0003ffff, 0x0001ffff, 0x0000ffff, 0x00007fff,
     0x00003fff, 0x00001fff, 0x00000fff, 0x000007ff, 0x000003ff, 0x000001ff};
 
 
+const TruncationMode kTruncationModes[] = {TruncationMode::kJavaScript,
+                                           TruncationMode::kRoundToZero};
+
+
 struct ComparisonBinaryOperator {
   const Operator* (MachineOperatorBuilder::*constructor)();
   const char* constructor_name;
 };
 
 
 std::ostream& operator<<(std::ostream& os,
                          ComparisonBinaryOperator const& cbop) {
   return os << cbop.constructor_name;
 }
 
 
 const ComparisonBinaryOperator kComparisonBinaryOperators[] = {
 #define OPCODE(Opcode)                         \
   { &MachineOperatorBuilder::Opcode, #Opcode } \
   ,
     MACHINE_COMPARE_BINOP_LIST(OPCODE)
 #undef OPCODE
 };
 
 }  // namespace
 
 
 // -----------------------------------------------------------------------------
-// Unary operators
-
-
-namespace {
-
-struct UnaryOperator {
-  const Operator* (MachineOperatorBuilder::*constructor)();
-  const char* constructor_name;
-};
-
-
-std::ostream& operator<<(std::ostream& os, const UnaryOperator& unop) {
-  return os << unop.constructor_name;
-}
-
-
-static const UnaryOperator kUnaryOperators[] = {
-    {&MachineOperatorBuilder::ChangeInt32ToFloat64, "ChangeInt32ToFloat64"},
-    {&MachineOperatorBuilder::ChangeUint32ToFloat64, "ChangeUint32ToFloat64"},
-    {&MachineOperatorBuilder::ChangeFloat64ToInt32, "ChangeFloat64ToInt32"},
-    {&MachineOperatorBuilder::ChangeFloat64ToUint32, "ChangeFloat64ToUint32"},
-    {&MachineOperatorBuilder::ChangeInt32ToInt64, "ChangeInt32ToInt64"},
-    {&MachineOperatorBuilder::ChangeUint32ToUint64, "ChangeUint32ToUint64"},
-    {&MachineOperatorBuilder::TruncateFloat64ToInt32, "TruncateFloat64ToInt32"},
-    {&MachineOperatorBuilder::TruncateInt64ToInt32, "TruncateInt64ToInt32"}};
-
-}  // namespace
-
-
-typedef MachineOperatorReducerTestWithParam<UnaryOperator>
-    MachineUnaryOperatorReducerTest;
-
-
-TEST_P(MachineUnaryOperatorReducerTest, Parameter) {
-  const UnaryOperator unop = GetParam();
-  Reduction reduction =
-      Reduce(graph()->NewNode((machine()->*unop.constructor)(), Parameter(0)));
-  EXPECT_FALSE(reduction.Changed());
-}
-
-
-INSTANTIATE_TEST_CASE_P(MachineOperatorReducerTest,
-                        MachineUnaryOperatorReducerTest,
-                        ::testing::ValuesIn(kUnaryOperators));
-
-
-// -----------------------------------------------------------------------------
 // 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(BitEq<double>(x)));
   }
@@ skipping 134 matching lines @@
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // TruncateFloat64ToInt32
 
 
 TEST_F(MachineOperatorReducerTest,
        TruncateFloat64ToInt32WithChangeInt32ToFloat64) {
-  Node* value = Parameter(0);
-  Reduction reduction = Reduce(graph()->NewNode(
-      machine()->TruncateFloat64ToInt32(),
-      graph()->NewNode(machine()->ChangeInt32ToFloat64(), value)));
-  ASSERT_TRUE(reduction.Changed());
-  EXPECT_EQ(value, reduction.replacement());
+  TRACED_FOREACH(TruncationMode, mode, kTruncationModes) {
+    Node* value = Parameter(0);
+    Reduction reduction = Reduce(graph()->NewNode(
+        machine()->TruncateFloat64ToInt32(mode),
+        graph()->NewNode(machine()->ChangeInt32ToFloat64(), value)));
+    ASSERT_TRUE(reduction.Changed());
+    EXPECT_EQ(value, reduction.replacement());
+  }
 }
 
 
 TEST_F(MachineOperatorReducerTest, TruncateFloat64ToInt32WithConstant) {
   TRACED_FOREACH(double, x, kFloat64Values) {
     Reduction reduction = Reduce(graph()->NewNode(
-        machine()->TruncateFloat64ToInt32(), Float64Constant(x)));
+        machine()->TruncateFloat64ToInt32(TruncationMode::kJavaScript),
+        Float64Constant(x)));
     ASSERT_TRUE(reduction.Changed());
     EXPECT_THAT(reduction.replacement(), IsInt32Constant(DoubleToInt32(x)));
   }
 }
 
 
 TEST_F(MachineOperatorReducerTest, TruncateFloat64ToInt32WithPhi) {
   Node* const p0 = Parameter(0);
   Node* const p1 = Parameter(1);
   Node* const merge = graph()->start();
-  Reduction reduction = Reduce(graph()->NewNode(
-      machine()->TruncateFloat64ToInt32(),
-      graph()->NewNode(common()->Phi(kMachFloat64, 2), p0, p1, merge)));
-  ASSERT_TRUE(reduction.Changed());
-  EXPECT_THAT(reduction.replacement(),
-              IsPhi(kMachInt32, IsTruncateFloat64ToInt32(p0),
-                    IsTruncateFloat64ToInt32(p1), merge));
+  TRACED_FOREACH(TruncationMode, mode, kTruncationModes) {
+    Reduction reduction = Reduce(graph()->NewNode(
+        machine()->TruncateFloat64ToInt32(mode),
+        graph()->NewNode(common()->Phi(kMachFloat64, 2), p0, p1, merge)));
+    ASSERT_TRUE(reduction.Changed());
+    EXPECT_THAT(reduction.replacement(),
+                IsPhi(kMachInt32, IsTruncateFloat64ToInt32(p0),
+                      IsTruncateFloat64ToInt32(p1), merge));
+  }
 }
 
 
 // -----------------------------------------------------------------------------
 // TruncateInt64ToInt32
 
 
 TEST_F(MachineOperatorReducerTest, TruncateInt64ToInt32WithChangeInt32ToInt64) {
   Node* value = Parameter(0);
   Reduction reduction = Reduce(graph()->NewNode(
@@ skipping 1064 matching lines @@
     Reduction r = Reduce(node);
     ASSERT_TRUE(r.Changed());
     EXPECT_THAT(r.replacement(),
                 IsStore(rep, base, index, value, effect, control));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8