| // 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/access-builder.h" |
| #include "src/compiler/js-graph.h" |
| #include "src/compiler/node-properties-inl.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 TypedGraphTest { |
| public: |
| explicit SimplifiedOperatorReducerTest(int num_parameters = 1) |
| : TypedGraphTest(num_parameters), simplified_(zone()) {} |
| ~SimplifiedOperatorReducerTest() OVERRIDE {} |
| |
| protected: |
| Reduction Reduce(Node* node) { |
| MachineOperatorBuilder machine(zone()); |
| JSOperatorBuilder javascript(zone()); |
| JSGraph jsgraph(graph(), common(), &javascript, &machine); |
| SimplifiedOperatorReducer reducer(&jsgraph); |
| return reducer.Reduce(node); |
| } |
| |
| SimplifiedOperatorBuilder* simplified() { return &simplified_; } |
| |
| private: |
| SimplifiedOperatorBuilder simplified_; |
| }; |
| |
| |
| template <typename T> |
| class SimplifiedOperatorReducerTestWithParam |
| : public SimplifiedOperatorReducerTest, |
| public ::testing::WithParamInterface<T> { |
| public: |
| explicit SimplifiedOperatorReducerTestWithParam(int num_parameters = 1) |
| : SimplifiedOperatorReducerTest(num_parameters) {} |
| ~SimplifiedOperatorReducerTestWithParam() OVERRIDE {} |
| }; |
| |
| |
| namespace { |
| |
| static const double kFloat64Values[] = { |
| -V8_INFINITY, -6.52696e+290, -1.05768e+290, -5.34203e+268, -1.01997e+268, |
| -8.22758e+266, -1.58402e+261, -5.15246e+241, -5.92107e+226, -1.21477e+226, |
| -1.67913e+188, -1.6257e+184, -2.60043e+170, -2.52941e+168, -3.06033e+116, |
| -4.56201e+52, -3.56788e+50, -9.9066e+38, -3.07261e+31, -2.1271e+09, |
| -1.91489e+09, -1.73053e+09, -9.30675e+08, -26030, -20453, |
| -15790, -11699, -111, -97, -78, |
| -63, -58, -1.53858e-06, -2.98914e-12, -1.14741e-39, |
| -8.20347e-57, -1.48932e-59, -3.17692e-66, -8.93103e-81, -3.91337e-83, |
| -6.0489e-92, -8.83291e-113, -4.28266e-117, -1.92058e-178, -2.0567e-192, |
| -1.68167e-194, -1.51841e-214, -3.98738e-234, -7.31851e-242, -2.21875e-253, |
| -1.11612e-293, -0.0, 0.0, 2.22507e-308, 1.06526e-307, |
| 4.16643e-227, 6.76624e-223, 2.0432e-197, 3.16254e-184, 1.37315e-173, |
| 2.88603e-172, 1.54155e-99, 4.42923e-81, 1.40539e-73, 5.4462e-73, |
| 1.24064e-58, 3.11167e-58, 2.75826e-39, 0.143815, 58, |
| 67, 601, 7941, 11644, 13697, |
| 25680, 29882, 1.32165e+08, 1.62439e+08, 4.16837e+08, |
| 9.59097e+08, 1.32491e+09, 1.8728e+09, 1.0672e+17, 2.69606e+46, |
| 1.98285e+79, 1.0098e+82, 7.93064e+88, 3.67444e+121, 9.36506e+123, |
| 7.27954e+162, 3.05316e+168, 1.16171e+175, 1.64771e+189, 1.1622e+202, |
| 2.00748e+239, 2.51778e+244, 3.90282e+306, 1.79769e+308, V8_INFINITY}; |
| |
| |
| static const int32_t kInt32Values[] = { |
| -2147483647 - 1, -2104508227, -2103151830, -1435284490, -1378926425, |
| -1318814539, -1289388009, -1287537572, -1279026536, -1241605942, |
| -1226046939, -941837148, -779818051, -413830641, -245798087, |
| -184657557, -127145950, -105483328, -32325, -26653, |
| -23858, -23834, -22363, -19858, -19044, |
| -18744, -15528, -5309, -3372, -2093, |
| -104, -98, -97, -93, -84, |
| -80, -78, -76, -72, -58, |
| -57, -56, -55, -45, -40, |
| -34, -32, -25, -24, -5, |
| -2, 0, 3, 10, 24, |
| 34, 42, 46, 47, 48, |
| 52, 56, 64, 65, 71, |
| 76, 79, 81, 82, 97, |
| 102, 103, 104, 106, 107, |
| 109, 116, 122, 3653, 4485, |
| 12405, 16504, 26262, 28704, 29755, |
| 30554, 16476817, 605431957, 832401070, 873617242, |
| 914205764, 1062628108, 1087581664, 1488498068, 1534668023, |
| 1661587028, 1696896187, 1866841746, 2032089723, 2147483647}; |
| |
| |
| static const uint32_t kUint32Values[] = { |
| 0x0, 0x5, 0x8, 0xc, 0xd, 0x26, |
| 0x28, 0x29, 0x30, 0x34, 0x3e, 0x42, |
| 0x50, 0x5b, 0x63, 0x71, 0x77, 0x7c, |
| 0x83, 0x88, 0x96, 0x9c, 0xa3, 0xfa, |
| 0x7a7, 0x165d, 0x234d, 0x3acb, 0x43a5, 0x4573, |
| 0x5b4f, 0x5f14, 0x6996, 0x6c6e, 0x7289, 0x7b9a, |
| 0x7bc9, 0x86bb, 0xa839, 0xaa41, 0xb03b, 0xc942, |
| 0xce68, 0xcf4c, 0xd3ad, 0xdea3, 0xe90c, 0xed86, |
| 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}; |
| |
| } // namespace |
| |
| |
| // ----------------------------------------------------------------------------- |
| // Unary operators |
| |
| |
| namespace { |
| |
| struct UnaryOperator { |
| const Operator* (SimplifiedOperatorBuilder::*constructor)(); |
| const char* constructor_name; |
| }; |
| |
| |
| std::ostream& operator<<(std::ostream& os, const UnaryOperator& unop) { |
| return os << unop.constructor_name; |
| } |
| |
| |
| static const UnaryOperator kUnaryOperators[] = { |
| {&SimplifiedOperatorBuilder::AnyToBoolean, "AnyToBoolean"}, |
| {&SimplifiedOperatorBuilder::BooleanNot, "BooleanNot"}, |
| {&SimplifiedOperatorBuilder::ChangeBitToBool, "ChangeBitToBool"}, |
| {&SimplifiedOperatorBuilder::ChangeBoolToBit, "ChangeBoolToBit"}, |
| {&SimplifiedOperatorBuilder::ChangeFloat64ToTagged, |
| "ChangeFloat64ToTagged"}, |
| {&SimplifiedOperatorBuilder::ChangeInt32ToTagged, "ChangeInt32ToTagged"}, |
| {&SimplifiedOperatorBuilder::ChangeTaggedToFloat64, |
| "ChangeTaggedToFloat64"}, |
| {&SimplifiedOperatorBuilder::ChangeTaggedToInt32, "ChangeTaggedToInt32"}, |
| {&SimplifiedOperatorBuilder::ChangeTaggedToUint32, "ChangeTaggedToUint32"}, |
| {&SimplifiedOperatorBuilder::ChangeUint32ToTagged, "ChangeUint32ToTagged"}}; |
| |
| } // namespace |
| |
| |
| typedef SimplifiedOperatorReducerTestWithParam<UnaryOperator> |
| SimplifiedUnaryOperatorTest; |
| |
| |
| TEST_P(SimplifiedUnaryOperatorTest, Parameter) { |
| const UnaryOperator& unop = GetParam(); |
| Reduction reduction = Reduce(graph()->NewNode( |
| (simplified()->*unop.constructor)(), Parameter(Type::Any()))); |
| EXPECT_FALSE(reduction.Changed()); |
| } |
| |
| |
| INSTANTIATE_TEST_CASE_P(SimplifiedOperatorReducerTest, |
| SimplifiedUnaryOperatorTest, |
| ::testing::ValuesIn(kUnaryOperators)); |
| |
| |
| // ----------------------------------------------------------------------------- |
| // AnyToBoolean |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, AnyToBooleanWithBoolean) { |
| Node* p = Parameter(Type::Boolean()); |
| Reduction r = Reduce(graph()->NewNode(simplified()->AnyToBoolean(), p)); |
| ASSERT_TRUE(r.Changed()); |
| EXPECT_EQ(p, r.replacement()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, AnyToBooleanWithOrderedNumber) { |
| Node* p = Parameter(Type::OrderedNumber()); |
| Reduction r = Reduce(graph()->NewNode(simplified()->AnyToBoolean(), p)); |
| ASSERT_TRUE(r.Changed()); |
| EXPECT_THAT(r.replacement(), |
| IsBooleanNot(IsNumberEqual(p, IsNumberConstant(0)))); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, AnyToBooleanWithString) { |
| Node* p = Parameter(Type::String()); |
| Reduction r = Reduce(graph()->NewNode(simplified()->AnyToBoolean(), p)); |
| ASSERT_TRUE(r.Changed()); |
| EXPECT_THAT(r.replacement(), |
| IsBooleanNot( |
| IsNumberEqual(IsLoadField(AccessBuilder::ForStringLength(), p, |
| graph()->start(), graph()->start()), |
| IsNumberConstant(0)))); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // BooleanNot |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, BooleanNotWithBooleanNot) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce( |
| graph()->NewNode(simplified()->BooleanNot(), |
| graph()->NewNode(simplified()->BooleanNot(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_EQ(param0, reduction.replacement()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, BooleanNotWithFalseConstant) { |
| Reduction reduction0 = |
| Reduce(graph()->NewNode(simplified()->BooleanNot(), FalseConstant())); |
| ASSERT_TRUE(reduction0.Changed()); |
| EXPECT_THAT(reduction0.replacement(), IsTrueConstant()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, BooleanNotWithTrueConstant) { |
| Reduction reduction1 = |
| Reduce(graph()->NewNode(simplified()->BooleanNot(), TrueConstant())); |
| ASSERT_TRUE(reduction1.Changed()); |
| EXPECT_THAT(reduction1.replacement(), IsFalseConstant()); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // ChangeBoolToBit |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeBitToBoolWithChangeBoolToBit) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeBitToBool(), |
| graph()->NewNode(simplified()->ChangeBoolToBit(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_EQ(param0, reduction.replacement()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeBitToBoolWithZeroConstant) { |
| Reduction reduction = Reduce( |
| graph()->NewNode(simplified()->ChangeBitToBool(), Int32Constant(0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsFalseConstant()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeBitToBoolWithOneConstant) { |
| Reduction reduction = Reduce( |
| graph()->NewNode(simplified()->ChangeBitToBool(), Int32Constant(1))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsTrueConstant()); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // ChangeBoolToBit |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeBoolToBitWithFalseConstant) { |
| Reduction reduction = Reduce( |
| graph()->NewNode(simplified()->ChangeBoolToBit(), FalseConstant())); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(0)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeBoolToBitWithTrueConstant) { |
| Reduction reduction = |
| Reduce(graph()->NewNode(simplified()->ChangeBoolToBit(), TrueConstant())); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(1)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeBoolToBitWithChangeBitToBool) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeBoolToBit(), |
| graph()->NewNode(simplified()->ChangeBitToBool(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_EQ(param0, reduction.replacement()); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // 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(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(BitEq(FastI2D(n)))); |
| } |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // ChangeTaggedToFloat64 |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToFloat64WithChangeFloat64ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToFloat64(), |
| graph()->NewNode(simplified()->ChangeFloat64ToTagged(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_EQ(param0, reduction.replacement()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToFloat64WithChangeInt32ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToFloat64(), |
| graph()->NewNode(simplified()->ChangeInt32ToTagged(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsChangeInt32ToFloat64(param0)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToFloat64WithChangeUint32ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToFloat64(), |
| graph()->NewNode(simplified()->ChangeUint32ToTagged(), param0))); |
| 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(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(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(BitEq(base::OS::nan_value()))); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // ChangeTaggedToInt32 |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToInt32WithChangeFloat64ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToInt32(), |
| graph()->NewNode(simplified()->ChangeFloat64ToTagged(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsChangeFloat64ToInt32(param0)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToInt32WithChangeInt32ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToInt32(), |
| graph()->NewNode(simplified()->ChangeInt32ToTagged(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_EQ(param0, reduction.replacement()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToInt32WithConstant) { |
| TRACED_FOREACH(double, n, kFloat64Values) { |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToInt32(), NumberConstant(n))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(DoubleToInt32(n))); |
| } |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToInt32WithNaNConstant1) { |
| Reduction reduction = |
| Reduce(graph()->NewNode(simplified()->ChangeTaggedToInt32(), |
| NumberConstant(-base::OS::nan_value()))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(0)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToInt32WithNaNConstant2) { |
| Reduction reduction = |
| Reduce(graph()->NewNode(simplified()->ChangeTaggedToInt32(), |
| NumberConstant(base::OS::nan_value()))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(0)); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // ChangeTaggedToUint32 |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToUint32WithChangeFloat64ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToUint32(), |
| graph()->NewNode(simplified()->ChangeFloat64ToTagged(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsChangeFloat64ToUint32(param0)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, |
| ChangeTaggedToUint32WithChangeUint32ToTagged) { |
| Node* param0 = Parameter(0); |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToUint32(), |
| graph()->NewNode(simplified()->ChangeUint32ToTagged(), param0))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_EQ(param0, reduction.replacement()); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToUint32WithConstant) { |
| TRACED_FOREACH(double, n, kFloat64Values) { |
| Reduction reduction = Reduce(graph()->NewNode( |
| simplified()->ChangeTaggedToUint32(), NumberConstant(n))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), |
| IsInt32Constant(bit_cast<int32_t>(DoubleToUint32(n)))); |
| } |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToUint32WithNaNConstant1) { |
| Reduction reduction = |
| Reduce(graph()->NewNode(simplified()->ChangeTaggedToUint32(), |
| NumberConstant(-base::OS::nan_value()))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(0)); |
| } |
| |
| |
| TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToUint32WithNaNConstant2) { |
| Reduction reduction = |
| Reduce(graph()->NewNode(simplified()->ChangeTaggedToUint32(), |
| NumberConstant(base::OS::nan_value()))); |
| ASSERT_TRUE(reduction.Changed()); |
| EXPECT_THAT(reduction.replacement(), IsInt32Constant(0)); |
| } |
| |
| |
| // ----------------------------------------------------------------------------- |
| // 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(BitEq(FastUI2D(n)))); |
| } |
| } |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |