// 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/base/bits.h"
#include "src/compiler/graph-unittest.h"
#include "src/compiler/js-graph.h"
#include "src/compiler/machine-operator-reducer.h"
#include "src/compiler/typer.h"
namespace v8 {
namespace internal {
namespace compiler {
class MachineOperatorReducerTest : public GraphTest {
public:
explicit MachineOperatorReducerTest(int num_parameters = 2)
: GraphTest(num_parameters) {}
protected:
Reduction Reduce(Node* node) {
Typer typer(zone());
JSOperatorBuilder javascript(zone());
JSGraph jsgraph(graph(), common(), &javascript, &typer, &machine_);
MachineOperatorReducer reducer(&jsgraph);
return reducer.Reduce(node);
}
MachineOperatorBuilder* machine() { return &machine_; }
private:
MachineOperatorBuilder machine_;
};
template <typename T>
class MachineOperatorReducerTestWithParam
: public MachineOperatorReducerTest,
public ::testing::WithParamInterface<T> {
public:
explicit MachineOperatorReducerTestWithParam(int num_parameters = 2)
: MachineOperatorReducerTest(num_parameters) {}
virtual ~MachineOperatorReducerTestWithParam() {}
};
namespace {
static const float kFloat32Values[] = {
-std::numeric_limits<float>::infinity(), -2.70497e+38f, -1.4698e+37f,
-1.22813e+35f, -1.20555e+35f, -1.34584e+34f,
-1.0079e+32f, -6.49364e+26f, -3.06077e+25f,
-1.46821e+25f, -1.17658e+23f, -1.9617e+22f,
-2.7357e+20f, -1.48708e+13f, -1.89633e+12f,
-4.66622e+11f, -2.22581e+11f, -1.45381e+10f,
-1.3956e+09f, -1.32951e+09f, -1.30721e+09f,
-1.19756e+09f, -9.26822e+08f, -6.35647e+08f,
-4.00037e+08f, -1.81227e+08f, -5.09256e+07f,
-964300.0f, -192446.0f, -28455.0f,
-27194.0f, -26401.0f, -20575.0f,
-17069.0f, -9167.0f, -960.178f,
-113.0f, -62.0f, -15.0f,
-7.0f, -0.0256635f, -4.60374e-07f,
-3.63759e-10f, -4.30175e-14f, -5.27385e-15f,
-1.48084e-15f, -1.05755e-19f, -3.2995e-21f,
-1.67354e-23f, -1.11885e-23f, -1.78506e-30f,
-5.07594e-31f, -3.65799e-31f, -1.43718e-34f,
-1.27126e-38f, -0.0f, 0.0f,
1.17549e-38f, 1.56657e-37f, 4.08512e-29f,
3.31357e-28f, 6.25073e-22f, 4.1723e-13f,
1.44343e-09f, 5.27004e-08f, 9.48298e-08f,
5.57888e-07f, 4.89988e-05f, 0.244326f,
12.4895f, 19.0f, 47.0f,
106.0f, 538.324f, 564.536f,
819.124f, 7048.0f, 12611.0f,
19878.0f, 20309.0f, 797056.0f,
1.77219e+09f, 1.51116e+11f, 4.18193e+13f,
3.59167e+16f, 3.38211e+19f, 2.67488e+20f,
1.78831e+21f, 9.20914e+21f, 8.35654e+23f,
1.4495e+24f, 5.94015e+25f, 4.43608e+30f,
2.44502e+33f, 2.61152e+33f, 1.38178e+37f,
1.71306e+37f, 3.31899e+38f, 3.40282e+38f,
std::numeric_limits<float>::infinity()};
static const double kFloat64Values[] = {
-V8_INFINITY, -4.23878e+275, -5.82632e+265, -6.60355e+220, -6.26172e+212,
-2.56222e+211, -4.82408e+201, -1.84106e+157, -1.63662e+127, -1.55772e+100,
-1.67813e+72, -2.3382e+55, -3.179e+30, -1.441e+09, -1.0647e+09,
-7.99361e+08, -5.77375e+08, -2.20984e+08, -32757, -13171,
-9970, -3984, -107, -105, -92,
-77, -61, -0.000208163, -1.86685e-06, -1.17296e-10,
-9.26358e-11, -5.08004e-60, -1.74753e-65, -1.06561e-71, -5.67879e-79,
-5.78459e-130, -2.90989e-171, -7.15489e-243, -3.76242e-252, -1.05639e-263,
-4.40497e-267, -2.19666e-273, -4.9998e-276, -5.59821e-278, -2.03855e-282,
-5.99335e-283, -7.17554e-284, -3.11744e-309, -0.0, 0.0,
2.22507e-308, 1.30127e-270, 7.62898e-260, 4.00313e-249, 3.16829e-233,
1.85244e-228, 2.03544e-129, 1.35126e-110, 1.01182e-106, 5.26333e-94,
1.35292e-90, 2.85394e-83, 1.78323e-77, 5.4967e-57, 1.03207e-25,
4.57401e-25, 1.58738e-05, 2, 125, 2310,
9636, 14802, 17168, 28945, 29305,
4.81336e+07, 1.41207e+08, 4.65962e+08, 1.40499e+09, 2.12648e+09,
8.80006e+30, 1.4446e+45, 1.12164e+54, 2.48188e+89, 6.71121e+102,
3.074e+112, 4.9699e+152, 5.58383e+166, 4.30654e+172, 7.08824e+185,
9.6586e+214, 2.028e+223, 6.63277e+243, 1.56192e+261, 1.23202e+269,
5.72883e+289, 8.5798e+290, 1.40256e+294, 1.79769e+308, V8_INFINITY};
static const int32_t kInt32Values[] = {
-2147483647 - 1, -1914954528, -1698749618, -1578693386, -1577976073,
-1573998034, -1529085059, -1499540537, -1299205097, -1090814845,
-938186388, -806828902, -750927650, -520676892, -513661538,
-453036354, -433622833, -282638793, -28375, -27788,
-22770, -18806, -14173, -11956, -11200,
-10212, -8160, -3751, -2758, -1522,
-121, -120, -118, -117, -106,
-84, -80, -74, -59, -52,
-48, -39, -35, -17, -11,
-10, -9, -7, -5, 0,
9, 12, 17, 23, 29,
31, 33, 35, 40, 47,
55, 56, 62, 64, 67,
68, 69, 74, 79, 84,
89, 90, 97, 104, 118,
124, 126, 127, 7278, 17787,
24136, 24202, 25570, 26680, 30242,
32399, 420886487, 642166225, 821912648, 822577803,
851385718, 1212241078, 1411419304, 1589626102, 1596437184,
1876245816, 1954730266, 2008792749, 2045320228, 2147483647};
static const int64_t kInt64Values[] = {
V8_INT64_C(-9223372036854775807) - 1, V8_INT64_C(-8974392461363618006),
V8_INT64_C(-8874367046689588135), V8_INT64_C(-8269197512118230839),
V8_INT64_C(-8146091527100606733), V8_INT64_C(-7550917981466150848),
V8_INT64_C(-7216590251577894337), V8_INT64_C(-6464086891160048440),
V8_INT64_C(-6365616494908257190), V8_INT64_C(-6305630541365849726),
V8_INT64_C(-5982222642272245453), V8_INT64_C(-5510103099058504169),
V8_INT64_C(-5496838675802432701), V8_INT64_C(-4047626578868642657),
V8_INT64_C(-4033755046900164544), V8_INT64_C(-3554299241457877041),
V8_INT64_C(-2482258764588614470), V8_INT64_C(-1688515425526875335),
V8_INT64_C(-924784137176548532), V8_INT64_C(-725316567157391307),
V8_INT64_C(-439022654781092241), V8_INT64_C(-105545757668917080),
V8_INT64_C(-2088319373), V8_INT64_C(-2073699916),
V8_INT64_C(-1844949911), V8_INT64_C(-1831090548),
V8_INT64_C(-1756711933), V8_INT64_C(-1559409497),
V8_INT64_C(-1281179700), V8_INT64_C(-1211513985),
V8_INT64_C(-1182371520), V8_INT64_C(-785934753),
V8_INT64_C(-767480697), V8_INT64_C(-705745662),
V8_INT64_C(-514362436), V8_INT64_C(-459916580),
V8_INT64_C(-312328082), V8_INT64_C(-302949707),
V8_INT64_C(-285499304), V8_INT64_C(-125701262),
V8_INT64_C(-95139843), V8_INT64_C(-32768),
V8_INT64_C(-27542), V8_INT64_C(-23600),
V8_INT64_C(-18582), V8_INT64_C(-17770),
V8_INT64_C(-9086), V8_INT64_C(-9010),
V8_INT64_C(-8244), V8_INT64_C(-2890),
V8_INT64_C(-103), V8_INT64_C(-34),
V8_INT64_C(-27), V8_INT64_C(-25),
V8_INT64_C(-9), V8_INT64_C(-7),
V8_INT64_C(0), V8_INT64_C(2),
V8_INT64_C(38), V8_INT64_C(58),
V8_INT64_C(65), V8_INT64_C(93),
V8_INT64_C(111), V8_INT64_C(1003),
V8_INT64_C(1267), V8_INT64_C(12797),
V8_INT64_C(23122), V8_INT64_C(28200),
V8_INT64_C(30888), V8_INT64_C(42648848),
V8_INT64_C(116836693), V8_INT64_C(263003643),
V8_INT64_C(571039860), V8_INT64_C(1079398689),
V8_INT64_C(1145196402), V8_INT64_C(1184846321),
V8_INT64_C(1758281648), V8_INT64_C(1859991374),
V8_INT64_C(1960251588), V8_INT64_C(2042443199),
V8_INT64_C(296220586027987448), V8_INT64_C(1015494173071134726),
V8_INT64_C(1151237951914455318), V8_INT64_C(1331941174616854174),
V8_INT64_C(2022020418667972654), V8_INT64_C(2450251424374977035),
V8_INT64_C(3668393562685561486), V8_INT64_C(4858229301215502171),
V8_INT64_C(4919426235170669383), V8_INT64_C(5034286595330341762),
V8_INT64_C(5055797915536941182), V8_INT64_C(6072389716149252074),
V8_INT64_C(6185309910199801210), V8_INT64_C(6297328311011094138),
V8_INT64_C(6932372858072165827), V8_INT64_C(8483640924987737210),
V8_INT64_C(8663764179455849203), V8_INT64_C(8877197042645298254),
V8_INT64_C(8901543506779157333), V8_INT64_C(9223372036854775807)};
static const uint32_t kUint32Values[] = {
0x00000000, 0x00000001, 0xffffffff, 0x1b09788b, 0x04c5fce8, 0xcc0de5bf,
0x273a798e, 0x187937a3, 0xece3af83, 0x5495a16b, 0x0b668ecc, 0x11223344,
0x0000009e, 0x00000043, 0x0000af73, 0x0000116b, 0x00658ecc, 0x002b3b4c,
0x88776655, 0x70000000, 0x07200000, 0x7fffffff, 0x56123761, 0x7fffff00,
0x761c4761, 0x80000000, 0x88888888, 0xa0000000, 0xdddddddd, 0xe0000000,
0xeeeeeeee, 0xfffffffd, 0xf0000000, 0x007fffff, 0x003fffff, 0x001fffff,
0x000fffff, 0x0007ffff, 0x0003ffff, 0x0001ffff, 0x0000ffff, 0x00007fff,
0x00003fff, 0x00001fff, 0x00000fff, 0x000007ff, 0x000003ff, 0x000001ff};
} // namespace
// -----------------------------------------------------------------------------
// Unary operators
namespace {
struct UnaryOperator {
const Operator* (MachineOperatorBuilder::*constructor)();
const char* constructor_name;
};
std::ostream& operator<<(std::ostream& os, const UnaryOperator& unop) {
return os << unop.constructor_name;
}
static const UnaryOperator kUnaryOperators[] = {
{&MachineOperatorBuilder::ChangeInt32ToFloat64, "ChangeInt32ToFloat64"},
{&MachineOperatorBuilder::ChangeUint32ToFloat64, "ChangeUint32ToFloat64"},
{&MachineOperatorBuilder::ChangeFloat64ToInt32, "ChangeFloat64ToInt32"},
{&MachineOperatorBuilder::ChangeFloat64ToUint32, "ChangeFloat64ToUint32"},
{&MachineOperatorBuilder::ChangeInt32ToInt64, "ChangeInt32ToInt64"},
{&MachineOperatorBuilder::ChangeUint32ToUint64, "ChangeUint32ToUint64"},
{&MachineOperatorBuilder::TruncateFloat64ToInt32, "TruncateFloat64ToInt32"},
{&MachineOperatorBuilder::TruncateInt64ToInt32, "TruncateInt64ToInt32"}};
} // namespace
typedef MachineOperatorReducerTestWithParam<UnaryOperator>
MachineUnaryOperatorReducerTest;
TEST_P(MachineUnaryOperatorReducerTest, Parameter) {
const UnaryOperator unop = GetParam();
Reduction reduction =
Reduce(graph()->NewNode((machine()->*unop.constructor)(), Parameter(0)));
EXPECT_FALSE(reduction.Changed());
}
INSTANTIATE_TEST_CASE_P(MachineOperatorReducerTest,
MachineUnaryOperatorReducerTest,
::testing::ValuesIn(kUnaryOperators));
// -----------------------------------------------------------------------------
// ChangeFloat64ToFloat32
TEST_F(MachineOperatorReducerTest, ChangeFloat64ToFloat32WithConstant) {
TRACED_FOREACH(float, x, kFloat32Values) {
Reduction reduction = Reduce(graph()->NewNode(
machine()->ChangeFloat32ToFloat64(), Float32Constant(x)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFloat64Constant(x));
}
}
// -----------------------------------------------------------------------------
// ChangeFloat64ToInt32
TEST_F(MachineOperatorReducerTest,
ChangeFloat64ToInt32WithChangeInt32ToFloat64) {
Node* value = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
machine()->ChangeFloat64ToInt32(),
graph()->NewNode(machine()->ChangeInt32ToFloat64(), value)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(MachineOperatorReducerTest, ChangeFloat64ToInt32WithConstant) {
TRACED_FOREACH(int32_t, x, kInt32Values) {
Reduction reduction = Reduce(graph()->NewNode(
machine()->ChangeFloat64ToInt32(), Float64Constant(FastI2D(x))));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt32Constant(x));
}
}
// -----------------------------------------------------------------------------
// ChangeFloat64ToUint32
TEST_F(MachineOperatorReducerTest,
ChangeFloat64ToUint32WithChangeUint32ToFloat64) {
Node* value = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
machine()->ChangeFloat64ToUint32(),
graph()->NewNode(machine()->ChangeUint32ToFloat64(), value)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(MachineOperatorReducerTest, ChangeFloat64ToUint32WithConstant) {
TRACED_FOREACH(uint32_t, x, kUint32Values) {
Reduction reduction = Reduce(graph()->NewNode(
machine()->ChangeFloat64ToUint32(), Float64Constant(FastUI2D(x))));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt32Constant(bit_cast<int32_t>(x)));
}
}
// -----------------------------------------------------------------------------
// ChangeInt32ToFloat64
TEST_F(MachineOperatorReducerTest, ChangeInt32ToFloat64WithConstant) {
TRACED_FOREACH(int32_t, x, kInt32Values) {
Reduction reduction = Reduce(
graph()->NewNode(machine()->ChangeInt32ToFloat64(), Int32Constant(x)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFloat64Constant(FastI2D(x)));
}
}
// -----------------------------------------------------------------------------
// ChangeInt32ToInt64
TEST_F(MachineOperatorReducerTest, ChangeInt32ToInt64WithConstant) {
TRACED_FOREACH(int32_t, x, kInt32Values) {
Reduction reduction = Reduce(
graph()->NewNode(machine()->ChangeInt32ToInt64(), Int32Constant(x)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt64Constant(x));
}
}
// -----------------------------------------------------------------------------
// ChangeUint32ToFloat64
TEST_F(MachineOperatorReducerTest, ChangeUint32ToFloat64WithConstant) {
TRACED_FOREACH(uint32_t, x, kUint32Values) {
Reduction reduction =
Reduce(graph()->NewNode(machine()->ChangeUint32ToFloat64(),
Int32Constant(bit_cast<int32_t>(x))));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFloat64Constant(FastUI2D(x)));
}
}
// -----------------------------------------------------------------------------
// ChangeUint32ToUint64
TEST_F(MachineOperatorReducerTest, ChangeUint32ToUint64WithConstant) {
TRACED_FOREACH(uint32_t, x, kUint32Values) {
Reduction reduction =
Reduce(graph()->NewNode(machine()->ChangeUint32ToUint64(),
Int32Constant(bit_cast<int32_t>(x))));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(),
IsInt64Constant(bit_cast<int64_t>(static_cast<uint64_t>(x))));
}
}
// -----------------------------------------------------------------------------
// TruncateFloat64ToFloat32
TEST_F(MachineOperatorReducerTest,
TruncateFloat64ToFloat32WithChangeFloat32ToFloat64) {
Node* value = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
machine()->TruncateFloat64ToFloat32(),
graph()->NewNode(machine()->ChangeFloat32ToFloat64(), value)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(MachineOperatorReducerTest, TruncateFloat64ToFloat32WithConstant) {
TRACED_FOREACH(double, x, kFloat64Values) {
Reduction reduction = Reduce(graph()->NewNode(
machine()->TruncateFloat64ToFloat32(), Float64Constant(x)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsFloat32Constant(DoubleToFloat32(x)));
}
}
// -----------------------------------------------------------------------------
// TruncateFloat64ToInt32
TEST_F(MachineOperatorReducerTest,
TruncateFloat64ToInt32WithChangeInt32ToFloat64) {
Node* value = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
machine()->TruncateFloat64ToInt32(),
graph()->NewNode(machine()->ChangeInt32ToFloat64(), value)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(MachineOperatorReducerTest, TruncateFloat64ToInt32WithConstant) {
TRACED_FOREACH(double, x, kFloat64Values) {
Reduction reduction = Reduce(graph()->NewNode(
machine()->TruncateFloat64ToInt32(), Float64Constant(x)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(), IsInt32Constant(DoubleToInt32(x)));
}
}
// -----------------------------------------------------------------------------
// TruncateInt64ToInt32
TEST_F(MachineOperatorReducerTest, TruncateInt64ToInt32WithChangeInt32ToInt64) {
Node* value = Parameter(0);
Reduction reduction = Reduce(graph()->NewNode(
machine()->TruncateInt64ToInt32(),
graph()->NewNode(machine()->ChangeInt32ToInt64(), value)));
ASSERT_TRUE(reduction.Changed());
EXPECT_EQ(value, reduction.replacement());
}
TEST_F(MachineOperatorReducerTest, TruncateInt64ToInt32WithConstant) {
TRACED_FOREACH(int64_t, x, kInt64Values) {
Reduction reduction = Reduce(
graph()->NewNode(machine()->TruncateInt64ToInt32(), Int64Constant(x)));
ASSERT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(),
IsInt32Constant(bit_cast<int32_t>(
static_cast<uint32_t>(bit_cast<uint64_t>(x)))));
}
}
// -----------------------------------------------------------------------------
// Word32Ror
TEST_F(MachineOperatorReducerTest, ReduceToWord32RorWithParameters) {
Node* value = Parameter(0);
Node* shift = Parameter(1);
Node* shl = graph()->NewNode(machine()->Word32Shl(), value, shift);
Node* shr = graph()->NewNode(
machine()->Word32Shr(), value,
graph()->NewNode(machine()->Int32Sub(), Int32Constant(32), shift));
// (x << y) | (x >> (32 - y)) => x ror y
Node* node1 = graph()->NewNode(machine()->Word32Or(), shl, shr);
Reduction reduction1 = Reduce(node1);
EXPECT_TRUE(reduction1.Changed());
EXPECT_EQ(reduction1.replacement(), node1);
EXPECT_THAT(reduction1.replacement(), IsWord32Ror(value, shift));
// (x >> (32 - y)) | (x << y) => x ror y
Node* node2 = graph()->NewNode(machine()->Word32Or(), shr, shl);
Reduction reduction2 = Reduce(node2);
EXPECT_TRUE(reduction2.Changed());
EXPECT_EQ(reduction2.replacement(), node2);
EXPECT_THAT(reduction2.replacement(), IsWord32Ror(value, shift));
}
TEST_F(MachineOperatorReducerTest, ReduceToWord32RorWithConstant) {
Node* value = Parameter(0);
TRACED_FORRANGE(int32_t, k, 0, 31) {
Node* shl =
graph()->NewNode(machine()->Word32Shl(), value, Int32Constant(k));
Node* shr =
graph()->NewNode(machine()->Word32Shr(), value, Int32Constant(32 - k));
// (x << K) | (x >> ((32 - K) - y)) => x ror K
Node* node1 = graph()->NewNode(machine()->Word32Or(), shl, shr);
Reduction reduction1 = Reduce(node1);
EXPECT_TRUE(reduction1.Changed());
EXPECT_EQ(reduction1.replacement(), node1);
EXPECT_THAT(reduction1.replacement(),
IsWord32Ror(value, IsInt32Constant(k)));
// (x >> (32 - K)) | (x << K) => x ror K
Node* node2 = graph()->NewNode(machine()->Word32Or(), shr, shl);
Reduction reduction2 = Reduce(node2);
EXPECT_TRUE(reduction2.Changed());
EXPECT_EQ(reduction2.replacement(), node2);
EXPECT_THAT(reduction2.replacement(),
IsWord32Ror(value, IsInt32Constant(k)));
}
}
TEST_F(MachineOperatorReducerTest, Word32RorWithZeroShift) {
Node* value = Parameter(0);
Node* node =
graph()->NewNode(machine()->Word32Ror(), value, Int32Constant(0));
Reduction reduction = Reduce(node);
EXPECT_TRUE(reduction.Changed());
EXPECT_EQ(reduction.replacement(), value);
}
TEST_F(MachineOperatorReducerTest, Word32RorWithConstants) {
TRACED_FOREACH(int32_t, x, kUint32Values) {
TRACED_FORRANGE(int32_t, y, 0, 31) {
Node* node = graph()->NewNode(machine()->Word32Ror(), Int32Constant(x),
Int32Constant(y));
Reduction reduction = Reduce(node);
EXPECT_TRUE(reduction.Changed());
EXPECT_THAT(reduction.replacement(),
IsInt32Constant(base::bits::RotateRight32(x, y)));
}
}
}
// -----------------------------------------------------------------------------
// Int32AddWithOverflow
TEST_F(MachineOperatorReducerTest, Int32AddWithOverflowWithZero) {
Node* p0 = Parameter(0);
{
Node* add = graph()->NewNode(machine()->Int32AddWithOverflow(),
Int32Constant(0), p0);
Reduction r = Reduce(graph()->NewNode(common()->Projection(1), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsInt32Constant(0));
r = Reduce(graph()->NewNode(common()->Projection(0), add));
ASSERT_TRUE(r.Changed());
EXPECT_EQ(p0, r.replacement());
}
{
Node* add = graph()->NewNode(machine()->Int32AddWithOverflow(), p0,
Int32Constant(0));
Reduction r = Reduce(graph()->NewNode(common()->Projection(1), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsInt32Constant(0));
r = Reduce(graph()->NewNode(common()->Projection(0), add));
ASSERT_TRUE(r.Changed());
EXPECT_EQ(p0, r.replacement());
}
}
TEST_F(MachineOperatorReducerTest, Int32AddWithOverflowWithConstant) {
TRACED_FOREACH(int32_t, x, kInt32Values) {
TRACED_FOREACH(int32_t, y, kInt32Values) {
int32_t z;
Node* add = graph()->NewNode(machine()->Int32AddWithOverflow(),
Int32Constant(x), Int32Constant(y));
Reduction r = Reduce(graph()->NewNode(common()->Projection(1), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(),
IsInt32Constant(base::bits::SignedAddOverflow32(x, y, &z)));
r = Reduce(graph()->NewNode(common()->Projection(0), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsInt32Constant(z));
}
}
}
// -----------------------------------------------------------------------------
// Int32SubWithOverflow
TEST_F(MachineOperatorReducerTest, Int32SubWithOverflowWithZero) {
Node* p0 = Parameter(0);
Node* add =
graph()->NewNode(machine()->Int32SubWithOverflow(), p0, Int32Constant(0));
Reduction r = Reduce(graph()->NewNode(common()->Projection(1), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsInt32Constant(0));
r = Reduce(graph()->NewNode(common()->Projection(0), add));
ASSERT_TRUE(r.Changed());
EXPECT_EQ(p0, r.replacement());
}
TEST_F(MachineOperatorReducerTest, Int32SubWithOverflowWithConstant) {
TRACED_FOREACH(int32_t, x, kInt32Values) {
TRACED_FOREACH(int32_t, y, kInt32Values) {
int32_t z;
Node* add = graph()->NewNode(machine()->Int32SubWithOverflow(),
Int32Constant(x), Int32Constant(y));
Reduction r = Reduce(graph()->NewNode(common()->Projection(1), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(),
IsInt32Constant(base::bits::SignedSubOverflow32(x, y, &z)));
r = Reduce(graph()->NewNode(common()->Projection(0), add));
ASSERT_TRUE(r.Changed());
EXPECT_THAT(r.replacement(), IsInt32Constant(z));
}
}
}
} // namespace compiler
} // namespace internal
} // namespace v8