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// 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/simplified-operator-reducer.h"
#include "src/codegen/tick-counter.h"
#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/types.h"
#include "src/numbers/conversions-inl.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 {
namespace simplified_operator_reducer_unittest {
class SimplifiedOperatorReducerTest : public GraphTest {
public:
explicit SimplifiedOperatorReducerTest(int num_parameters = 1)
: GraphTest(num_parameters), simplified_(zone()) {}
~SimplifiedOperatorReducerTest() override = default;
protected:
Reduction Reduce(Node* node) {
JSHeapBroker broker(isolate(), zone(), FLAG_trace_heap_broker);
MachineOperatorBuilder machine(zone());
JSOperatorBuilder javascript(zone());
JSGraph jsgraph(isolate(), graph(), common(), &javascript, simplified(),
&machine);
GraphReducer graph_reducer(zone(), graph(), tick_counter());
SimplifiedOperatorReducer reducer(&graph_reducer, &jsgraph, &broker);
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 = default;
};
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 double kNaNs[] = {-std::numeric_limits<double>::quiet_NaN(),
std::numeric_limits<double>::quiet_NaN(),
bit_cast<double>(uint64_t{0x7FFFFFFFFFFFFFFF}),
bit_cast<double>(uint64_t{0xFFFFFFFFFFFFFFFF})};
const CheckForMinusZeroMode kCheckForMinusZeroModes[] = {
CheckForMinusZeroMode::kDontCheckForMinusZero,
CheckForMinusZeroMode::kCheckForMinusZero};
} // 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());
}
// -----------------------------------------------------------------------------
// ChangeTaggedToBit
TEST_F(SimplifiedOperatorReducerTest, ChangeBitToTaggedWithChangeTaggedToBit) {
Node* param0 = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ChangeBitToTagged(),
graph()->NewNode(simplified()->ChangeTaggedToBit(), param0)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(param0, reduction.replacement());
}
TEST_F(SimplifiedOperatorReducerTest, ChangeBitToTaggedWithZeroConstant) {
Reduction reduction = Reduce(
graph()->NewNode(simplified()->ChangeBitToTagged(), Int32Constant(0)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFalseConstant());
}
TEST_F(SimplifiedOperatorReducerTest, ChangeBitToTaggedWithOneConstant) {
Reduction reduction = Reduce(
graph()->NewNode(simplified()->ChangeBitToTagged(), Int32Constant(1)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsTrueConstant());
}
// -----------------------------------------------------------------------------
// ChangeTaggedToBit
TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToBitWithFalseConstant) {
Reduction reduction = Reduce(
graph()->NewNode(simplified()->ChangeTaggedToBit(), FalseConstant()));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt32Constant(0));
}
TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToBitWithTrueConstant) {
Reduction reduction = Reduce(
graph()->NewNode(simplified()->ChangeTaggedToBit(), TrueConstant()));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt32Constant(1));
}
TEST_F(SimplifiedOperatorReducerTest, ChangeTaggedToBitWithChangeBitToTagged) {
Node* param0 = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ChangeTaggedToBit(),
graph()->NewNode(simplified()->ChangeBitToTagged(), param0)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(param0, reduction.replacement());
}
// -----------------------------------------------------------------------------
// ChangeFloat64ToTagged
TEST_F(SimplifiedOperatorReducerTest, ChangeFloat64ToTaggedWithConstant) {
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
TRACED_FOREACH(double, n, kFloat64Values) {
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ChangeFloat64ToTagged(mode), 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);
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ChangeTaggedToFloat64(),
graph()->NewNode(simplified()->ChangeFloat64ToTagged(mode), 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);
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ChangeTaggedToInt32(),
graph()->NewNode(simplified()->ChangeFloat64ToTagged(mode), 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());
}
// -----------------------------------------------------------------------------
// ChangeTaggedToUint32
TEST_F(SimplifiedOperatorReducerTest,
ChangeTaggedToUint32WithChangeFloat64ToTagged) {
Node* param0 = Parameter(0);
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ChangeTaggedToUint32(),
graph()->NewNode(simplified()->ChangeFloat64ToTagged(mode), 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());
}
// -----------------------------------------------------------------------------
// TruncateTaggedToWord32
TEST_F(SimplifiedOperatorReducerTest,
TruncateTaggedToWord3WithChangeFloat64ToTagged) {
Node* param0 = Parameter(0);
TRACED_FOREACH(CheckForMinusZeroMode, mode, kCheckForMinusZeroModes) {
Reduction reduction = Reduce(graph()->NewNode(
simplified()->TruncateTaggedToWord32(),
graph()->NewNode(simplified()->ChangeFloat64ToTagged(mode), param0)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsTruncateFloat64ToWord32(param0));
}
}
TEST_F(SimplifiedOperatorReducerTest, TruncateTaggedToWord32WithConstant) {
TRACED_FOREACH(double, n, kFloat64Values) {
Reduction reduction = Reduce(graph()->NewNode(
simplified()->TruncateTaggedToWord32(), NumberConstant(n)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt32Constant(DoubleToInt32(n)));
}
}
// -----------------------------------------------------------------------------
// CheckedFloat64ToInt32
TEST_F(SimplifiedOperatorReducerTest, CheckedFloat64ToInt32WithConstant) {
Node* effect = graph()->start();
Node* control = graph()->start();
TRACED_FOREACH(int32_t, n, kInt32Values) {
Reduction r = Reduce(graph()->NewNode(
simplified()->CheckedFloat64ToInt32(
CheckForMinusZeroMode::kDontCheckForMinusZero, VectorSlotPair()),
Float64Constant(n), effect, control));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsInt32Constant(n));
}
}
// -----------------------------------------------------------------------------
// CheckHeapObject
TEST_F(SimplifiedOperatorReducerTest, CheckHeapObjectWithChangeBitToTagged) {
Node* param0 = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* value = graph()->NewNode(simplified()->ChangeBitToTagged(), param0);
Reduction reduction = Reduce(graph()->NewNode(simplified()->CheckHeapObject(),
value, effect, control));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(SimplifiedOperatorReducerTest, CheckHeapObjectWithHeapConstant) {
Node* effect = graph()->start();
Node* control = graph()->start();
Handle<HeapObject> kHeapObjects[] = {
factory()->empty_string(), factory()->null_value(),
factory()->species_symbol(), factory()->undefined_value()};
TRACED_FOREACH(Handle<HeapObject>, object, kHeapObjects) {
Node* value = HeapConstant(object);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->CheckHeapObject(), value, effect, control));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
}
TEST_F(SimplifiedOperatorReducerTest, CheckHeapObjectWithCheckHeapObject) {
Node* param0 = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* value = effect = graph()->NewNode(simplified()->CheckHeapObject(),
param0, effect, control);
Reduction reduction = Reduce(graph()->NewNode(simplified()->CheckHeapObject(),
value, effect, control));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
// -----------------------------------------------------------------------------
// CheckSmi
TEST_F(SimplifiedOperatorReducerTest, CheckSmiWithChangeInt31ToTaggedSigned) {
Node* param0 = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* value =
graph()->NewNode(simplified()->ChangeInt31ToTaggedSigned(), param0);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->CheckSmi(VectorSlotPair()), value, effect, control));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(SimplifiedOperatorReducerTest, CheckSmiWithNumberConstant) {
Node* effect = graph()->start();
Node* control = graph()->start();
Node* value = NumberConstant(1.0);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->CheckSmi(VectorSlotPair()), value, effect, control));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(SimplifiedOperatorReducerTest, CheckSmiWithCheckSmi) {
Node* param0 = Parameter(0);
Node* effect = graph()->start();
Node* control = graph()->start();
Node* value = effect = graph()->NewNode(
simplified()->CheckSmi(VectorSlotPair()), param0, effect, control);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->CheckSmi(VectorSlotPair()), value, effect, control));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
// -----------------------------------------------------------------------------
// NumberAbs
TEST_F(SimplifiedOperatorReducerTest, NumberAbsWithNumberConstant) {
TRACED_FOREACH(double, n, kFloat64Values) {
Reduction reduction =
Reduce(graph()->NewNode(simplified()->NumberAbs(), NumberConstant(n)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsNumberConstant(std::fabs(n)));
}
}
// -----------------------------------------------------------------------------
// ObjectIsSmi
TEST_F(SimplifiedOperatorReducerTest, ObjectIsSmiWithChangeBitToTagged) {
Node* param0 = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ObjectIsSmi(),
graph()->NewNode(simplified()->ChangeBitToTagged(), param0)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFalseConstant());
}
TEST_F(SimplifiedOperatorReducerTest,
ObjectIsSmiWithChangeInt31ToTaggedSigned) {
Node* param0 = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
simplified()->ObjectIsSmi(),
graph()->NewNode(simplified()->ChangeInt31ToTaggedSigned(), param0)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsTrueConstant());
}
TEST_F(SimplifiedOperatorReducerTest, ObjectIsSmiWithHeapConstant) {
Handle<HeapObject> kHeapObjects[] = {
factory()->empty_string(), factory()->null_value(),
factory()->species_symbol(), factory()->undefined_value()};
TRACED_FOREACH(Handle<HeapObject>, o, kHeapObjects) {
Reduction reduction =
Reduce(graph()->NewNode(simplified()->ObjectIsSmi(), HeapConstant(o)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFalseConstant());
}
}
TEST_F(SimplifiedOperatorReducerTest, ObjectIsSmiWithNumberConstant) {
TRACED_FOREACH(double, n, kFloat64Values) {
Reduction reduction = Reduce(
graph()->NewNode(simplified()->ObjectIsSmi(), NumberConstant(n)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsBooleanConstant(IsSmiDouble(n)));
}
}
} // namespace simplified_operator_reducer_unittest
} // namespace compiler
} // namespace internal
} // namespace v8