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

test/unittests/compiler/simplified-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/compiler/js-graph.h"
 #include "src/compiler/simplified-operator.h"
 #include "src/compiler/simplified-operator-reducer.h"
 #include "src/conversions.h"
 #include "src/types.h"
 #include "test/unittests/compiler/graph-unittest.h"
 #include "test/unittests/compiler/node-test-utils.h"
+#include "testing/gmock-support.h"
+
+using testing::BitEq;
+
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class SimplifiedOperatorReducerTest : public GraphTest {
  public:
   explicit SimplifiedOperatorReducerTest(int num_parameters = 1)
       : GraphTest(num_parameters), simplified_(zone()) {}
   ~SimplifiedOperatorReducerTest() OVERRIDE {}
@@ skipping 85 matching lines @@
     0xfba5,     0x172dcc6,  0x114d8fc1, 0x182d6c9d, 0x1b1e3fad, 0x1db033bf,
     0x1e1de755, 0x1f625c80, 0x28f6cf00, 0x2acb6a94, 0x2c20240e, 0x2f0fe54e,
     0x31863a7c, 0x33325474, 0x3532fae3, 0x3bab82ea, 0x4c4b83a2, 0x4cd93d1e,
     0x4f7331d4, 0x5491b09b, 0x57cc6ff9, 0x60d3b4dc, 0x653f5904, 0x690ae256,
     0x69fe3276, 0x6bebf0ba, 0x6e2c69a3, 0x73b84ff7, 0x7b3a1924, 0x7ed032d9,
     0x84dd734b, 0x8552ea53, 0x8680754f, 0x8e9660eb, 0x94fe2b9c, 0x972d30cf,
     0x9b98c482, 0xb158667e, 0xb432932c, 0xb5b70989, 0xb669971a, 0xb7c359d1,
     0xbeb15c0d, 0xc171c53d, 0xc743dd38, 0xc8e2af50, 0xc98e2df0, 0xd9d1cdf9,
     0xdcc91049, 0xe46f396d, 0xee991950, 0xef64e521, 0xf7aeefc9, 0xffffffff};
 
-
-MATCHER(IsNaN, std::string(negation ? "isn't" : "is") + " NaN") {
-  return std::isnan(arg);
-}
-
 }  // namespace
 
 
 // -----------------------------------------------------------------------------
 // Unary operators
 
 
 namespace {
 
 struct UnaryOperator {
@@ skipping 132 matching lines @@
 
 // -----------------------------------------------------------------------------
 // ChangeFloat64ToTagged
 
 
 TEST_F(SimplifiedOperatorReducerTest, ChangeFloat64ToTaggedWithConstant) {
   TRACED_FOREACH(double, n, kFloat64Values) {
     Reduction reduction = Reduce(graph()->NewNode(
         simplified()->ChangeFloat64ToTagged(), Float64Constant(n)));
     ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsNumberConstant(n));
+    EXPECT_THAT(reduction.replacement(), IsNumberConstant(BitEq(n)));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeInt32ToTagged
 
 
 TEST_F(SimplifiedOperatorReducerTest, ChangeInt32ToTaggedWithConstant) {
   TRACED_FOREACH(int32_t, n, kInt32Values) {
     Reduction reduction = Reduce(graph()->NewNode(
         simplified()->ChangeInt32ToTagged(), Int32Constant(n)));
     ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsNumberConstant(FastI2D(n)));
+    EXPECT_THAT(reduction.replacement(), IsNumberConstant(BitEq(FastI2D(n))));
   }
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeTaggedToFloat64
 
 
 TEST_F(SimplifiedOperatorReducerTest,
        ChangeTaggedToFloat64WithChangeFloat64ToTagged) {
@@ skipping 26 matching lines @@
   ASSERT_TRUE(reduction.Changed());
   EXPECT_THAT(reduction.replacement(), IsChangeUint32ToFloat64(param0));
 }
 
 
 TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToFloat64WithConstant) {
   TRACED_FOREACH(double, n, kFloat64Values) {
     Reduction reduction = Reduce(graph()->NewNode(
         simplified()->ChangeTaggedToFloat64(), NumberConstant(n)));
     ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(n));
+    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(BitEq(n)));
   }
 }
 
 
 TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToFloat64WithNaNConstant1) {
   Reduction reduction =
       Reduce(graph()->NewNode(simplified()->ChangeTaggedToFloat64(),
                               NumberConstant(-base::OS::nan_value())));
   ASSERT_TRUE(reduction.Changed());
-  EXPECT_THAT(reduction.replacement(), IsFloat64Constant(IsNaN()));
+  EXPECT_THAT(reduction.replacement(),
+              IsFloat64Constant(BitEq(-base::OS::nan_value())));
 }
 
 
 TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToFloat64WithNaNConstant2) {
   Reduction reduction =
       Reduce(graph()->NewNode(simplified()->ChangeTaggedToFloat64(),
                               NumberConstant(base::OS::nan_value())));
   ASSERT_TRUE(reduction.Changed());
-  EXPECT_THAT(reduction.replacement(), IsFloat64Constant(IsNaN()));
+  EXPECT_THAT(reduction.replacement(),
+              IsFloat64Constant(BitEq(base::OS::nan_value())));
 }
 
 
 // -----------------------------------------------------------------------------
 // ChangeTaggedToInt32
 
 
 TEST_F(SimplifiedOperatorReducerTest,
        ChangeTaggedToInt32WithChangeFloat64ToTagged) {
   Node* param0 = Parameter(0);
@@ skipping 102 matching lines @@
 // -----------------------------------------------------------------------------
 // ChangeUint32ToTagged
 
 
 TEST_F(SimplifiedOperatorReducerTest, ChangeUint32ToTagged) {
   TRACED_FOREACH(uint32_t, n, kUint32Values) {
     Reduction reduction =
         Reduce(graph()->NewNode(simplified()->ChangeUint32ToTagged(),
                                 Int32Constant(bit_cast<int32_t>(n))));
     ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsNumberConstant(FastUI2D(n)));
+    EXPECT_THAT(reduction.replacement(), IsNumberConstant(BitEq(FastUI2D(n))));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8