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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/binary-operator-reducer.h"
#include "src/compiler/common-operator.h"
#include "src/compiler/machine-operator.h"
#include "src/compiler/machine-type.h"
#include "src/compiler/node-properties.h"
#include "src/compiler/operator.h"
#include "src/compiler/simplified-operator.h"
#include "src/types-inl.h"
#include "test/unittests/compiler/graph-reducer-unittest.h"
#include "test/unittests/compiler/graph-unittest.h"
#include "test/unittests/compiler/node-test-utils.h"
using testing::StrictMock;
namespace v8 {
namespace internal {
namespace compiler {
class BinaryOperatorReducerTest : public TypedGraphTest {
public:
explicit BinaryOperatorReducerTest(int num_parameters = 1)
: TypedGraphTest(num_parameters), machine_(zone()), simplified_(zone()) {}
~BinaryOperatorReducerTest() override {}
protected:
Reduction Reduce(AdvancedReducer::Editor* editor, Node* node) {
BinaryOperatorReducer reducer(editor, graph(), common(), machine());
return reducer.Reduce(node);
}
Reduction Reduce(Node* node) {
StrictMock<MockAdvancedReducerEditor> editor;
return Reduce(&editor, node);
}
MachineOperatorBuilder* machine() { return &machine_; }
SimplifiedOperatorBuilder* simplified() { return &simplified_; }
private:
MachineOperatorBuilder machine_;
SimplifiedOperatorBuilder simplified_;
};
TEST_F(BinaryOperatorReducerTest, Div52OfMul52) {
// This reduction applies only to 64bit arch
if (!machine()->Is64()) return;
Node* p0 = Parameter(0);
Node* p1 = Parameter(1);
Node* t0 = graph()->NewNode(machine()->ChangeInt32ToFloat64(), p0);
Node* t1 = graph()->NewNode(machine()->ChangeInt32ToFloat64(), p1);
Type* mul_range = Type::Range(0x0, 0xFFFFFFFFFFFFFULL, graph()->zone());
Node* mul = graph()->NewNode(machine()->Float64Mul(), t0, t1);
NodeProperties::SetType(
mul, Type::Intersect(mul_range, Type::Number(), graph()->zone()));
Node* mul_replacement;
auto mul_matcher = IsInt64Mul(p0, p1);
{
StrictMock<MockAdvancedReducerEditor> editor;
EXPECT_CALL(editor, Revisit(mul_matcher));
Reduction r = Reduce(&editor, mul);
ASSERT_TRUE(r.Changed());
mul_replacement = r.replacement();
EXPECT_THAT(mul_replacement, IsRoundInt64ToFloat64(mul_matcher));
}
{
StrictMock<MockAdvancedReducerEditor> editor;
Node* power = Float64Constant(0x4000000);
Node* div =
graph()->NewNode(machine()->Float64Div(), mul_replacement, power);
auto shr_matcher = IsWord64Shr(mul_matcher, IsInt64Constant(26));
EXPECT_CALL(editor, Revisit(shr_matcher));
Reduction r = Reduce(&editor, div);
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsRoundInt64ToFloat64(shr_matcher));
}
}
} // namespace compiler
} // namespace internal
} // namespace v8
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