[turbofan] Fix incorrect minus zero handling in the unit tests.

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"
 #include "test/unittests/compiler/node-test-utils.h"
 #include "testing/gmock-support.h"
 
 using testing::AllOf;
+using testing::BitEq;
 using testing::Capture;
 using testing::CaptureEq;
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class MachineOperatorReducerTest : public TypedGraphTest {
  public:
   explicit MachineOperatorReducerTest(int num_parameters = 2)
@@ skipping 259 matching lines @@
 
 // -----------------------------------------------------------------------------
 // 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));
+    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(BitEq<double>(x)));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeFloat64ToInt32
 
 
 TEST_F(MachineOperatorReducerTest,
        ChangeFloat64ToInt32WithChangeInt32ToFloat64) {
@@ skipping 43 matching lines @@
 
 // -----------------------------------------------------------------------------
 // ChangeInt32ToFloat64
 
 
 TEST_F(MachineOperatorReducerTest, ChangeInt32ToFloat64WithConstant) {
   TRACED_FOREACH(int32_t, x, kInt32Values) {
     Reduction reduction = Reduce(
         graph()->NewNode(machine()->ChangeInt32ToFloat64(), Int32Constant(x)));
     ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(FastI2D(x)));
+    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(BitEq(FastI2D(x))));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeInt32ToInt64
 
 
 TEST_F(MachineOperatorReducerTest, ChangeInt32ToInt64WithConstant) {
   TRACED_FOREACH(int32_t, x, kInt32Values) {
     Reduction reduction = Reduce(
         graph()->NewNode(machine()->ChangeInt32ToInt64(), Int32Constant(x)));
     ASSERT_TRUE(reduction.Changed());
     EXPECT_THAT(reduction.replacement(), IsInt64Constant(x));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeUint32ToFloat64
 
 
 TEST_F(MachineOperatorReducerTest, ChangeUint32ToFloat64WithConstant) {
   TRACED_FOREACH(uint32_t, x, kUint32Values) {
     Reduction reduction =
         Reduce(graph()->NewNode(machine()->ChangeUint32ToFloat64(),
                                 Int32Constant(bit_cast<int32_t>(x))));
     ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(FastUI2D(x)));
+    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(BitEq(FastUI2D(x))));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeUint32ToUint64
 
 
 TEST_F(MachineOperatorReducerTest, ChangeUint32ToUint64WithConstant) {
   TRACED_FOREACH(uint32_t, x, kUint32Values) {
@@ skipping 20 matching lines @@
   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)));
+    EXPECT_THAT(reduction.replacement(),
+                IsFloat32Constant(BitEq(DoubleToFloat32(x))));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // TruncateFloat64ToInt32
 
 
 TEST_F(MachineOperatorReducerTest,
        TruncateFloat64ToInt32WithChangeInt32ToFloat64) {
@@ skipping 822 matching lines @@
 // -----------------------------------------------------------------------------
 // Float64Mul
 
 
 TEST_F(MachineOperatorReducerTest, Float64MulWithMinusOne) {
   Node* const p0 = Parameter(0);
   {
     Reduction r = Reduce(
         graph()->NewNode(machine()->Float64Mul(), p0, Float64Constant(-1.0)));
     ASSERT_TRUE(r.Changed());
-    EXPECT_THAT(r.replacement(), IsFloat64Sub(IsFloat64Constant(-0.0), p0));
+    EXPECT_THAT(r.replacement(),
+                IsFloat64Sub(IsFloat64Constant(BitEq(-0.0)), p0));
   }
   {
     Reduction r = Reduce(
         graph()->NewNode(machine()->Float64Mul(), Float64Constant(-1.0), p0));
     ASSERT_TRUE(r.Changed());
-    EXPECT_THAT(r.replacement(), IsFloat64Sub(IsFloat64Constant(-0.0), p0));
+    EXPECT_THAT(r.replacement(),
+                IsFloat64Sub(IsFloat64Constant(BitEq(-0.0)), p0));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // Store
 
 
 TEST_F(MachineOperatorReducerTest, StoreRepWord8WithWord32And) {
   const StoreRepresentation rep(kRepWord8, kNoWriteBarrier);
@@ skipping 82 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