[turbofan] Remove the useless SimplifiedOperatorReducer.

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/access-builder.h"
-#include "src/compiler/js-graph.h"
-#include "src/compiler/node-properties.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(isolate(), 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 {
-
-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};
-
-
-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};
-
-
-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};
-
-
-const double kNaNs[] = {-std::numeric_limits<double>::quiet_NaN(),
-                        std::numeric_limits<double>::quiet_NaN(),
-                        bit_cast<double>(V8_UINT64_C(0x7FFFFFFFFFFFFFFF)),
-                        bit_cast<double>(V8_UINT64_C(0xFFFFFFFFFFFFFFFF))};
-
-}  // namespace
-
-
-// -----------------------------------------------------------------------------
-// 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, ChangeTaggedToFloat64WithNaNConstant) {
-  TRACED_FOREACH(double, nan, kNaNs) {
-    Reduction reduction = Reduce(graph()->NewNode(
-        simplified()->ChangeTaggedToFloat64(), NumberConstant(nan)));
-    ASSERT_TRUE(reduction.Changed());
-    EXPECT_THAT(reduction.replacement(), IsFloat64Constant(BitEq(nan)));
-  }
-}
-
-
-// -----------------------------------------------------------------------------
-// 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, ChangeTaggedToInt32WithNaNConstant) {
-  TRACED_FOREACH(double, nan, kNaNs) {
-    Reduction reduction = Reduce(graph()->NewNode(
-        simplified()->ChangeTaggedToInt32(), NumberConstant(nan)));
-    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, ChangeTaggedToUint32WithNaNConstant) {
-  TRACED_FOREACH(double, nan, kNaNs) {
-    Reduction reduction = Reduce(graph()->NewNode(
-        simplified()->ChangeTaggedToUint32(), NumberConstant(nan)));
-    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