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v8/test/cctest/compiler/test-branch-combine.cc
Clemens Hammacher 4b3e44488c [test] Remove redundant variables in value helpers 
Clean up some redundant variables after https://crrev.com/c/1449615.

R=mstarzinger@chromium.org

Bug: v8:8562
Change-Id: I44d46b037978f8feff7486cdc5c521c74c0a1c9e
Reviewed-on: https://chromium-review.googlesource.com/c/1449617
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59298}
2019-02-01 15:00:21 +00:00

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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/base/overflowing-math.h"
#include "src/objects-inl.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/codegen-tester.h"
#include "test/cctest/compiler/value-helper.h"
namespace v8 {
namespace internal {
namespace compiler {
static IrOpcode::Value int32cmp_opcodes[] = {
IrOpcode::kWord32Equal, IrOpcode::kInt32LessThan,
IrOpcode::kInt32LessThanOrEqual, IrOpcode::kUint32LessThan,
IrOpcode::kUint32LessThanOrEqual};
TEST(BranchCombineWord32EqualZero_1) {
// Test combining a branch with x == 0
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
int32_t eq_constant = -1033;
int32_t ne_constant = 825118;
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
m.Branch(m.Word32Equal(p0, m.Int32Constant(0)), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
int32_t expect = a == 0 ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a));
}
}
TEST(BranchCombineWord32EqualZero_chain) {
// Test combining a branch with a chain of x == 0 == 0 == 0 ...
int32_t eq_constant = -1133;
int32_t ne_constant = 815118;
for (int k = 0; k < 6; k++) {
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
Node* cond = p0;
for (int j = 0; j < k; j++) {
cond = m.Word32Equal(cond, m.Int32Constant(0));
}
m.Branch(cond, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
int32_t expect = (k & 1) == 1 ? (a == 0 ? eq_constant : ne_constant)
: (a == 0 ? ne_constant : eq_constant);
CHECK_EQ(expect, m.Call(a));
}
}
}
TEST(BranchCombineInt32LessThanZero_1) {
// Test combining a branch with x < 0
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
int32_t eq_constant = -1433;
int32_t ne_constant = 845118;
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
m.Branch(m.Int32LessThan(p0, m.Int32Constant(0)), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
int32_t expect = a < 0 ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a));
}
}
TEST(BranchCombineUint32LessThan100_1) {
// Test combining a branch with x < 100
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32());
int32_t eq_constant = 1471;
int32_t ne_constant = 88845718;
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
m.Branch(m.Uint32LessThan(p0, m.Int32Constant(100)), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_UINT32_INPUTS(a) {
int32_t expect = a < 100 ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a));
}
}
TEST(BranchCombineUint32LessThanOrEqual100_1) {
// Test combining a branch with x <= 100
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32());
int32_t eq_constant = 1479;
int32_t ne_constant = 77845719;
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
m.Branch(m.Uint32LessThanOrEqual(p0, m.Int32Constant(100)), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_UINT32_INPUTS(a) {
int32_t expect = a <= 100 ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a));
}
}
TEST(BranchCombineZeroLessThanInt32_1) {
// Test combining a branch with 0 < x
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
int32_t eq_constant = -2033;
int32_t ne_constant = 225118;
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
m.Branch(m.Int32LessThan(m.Int32Constant(0), p0), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
int32_t expect = 0 < a ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a));
}
}
TEST(BranchCombineInt32GreaterThanZero_1) {
// Test combining a branch with x > 0
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
int32_t eq_constant = -1073;
int32_t ne_constant = 825178;
Node* p0 = m.Parameter(0);
RawMachineLabel blocka, blockb;
m.Branch(m.Int32GreaterThan(p0, m.Int32Constant(0)), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
int32_t expect = a > 0 ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a));
}
}
TEST(BranchCombineWord32EqualP) {
// Test combining a branch with an Word32Equal.
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
int32_t eq_constant = -1035;
int32_t ne_constant = 825018;
Node* p0 = m.Parameter(0);
Node* p1 = m.Parameter(1);
RawMachineLabel blocka, blockb;
m.Branch(m.Word32Equal(p0, p1), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect = a == b ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineWord32EqualI) {
int32_t eq_constant = -1135;
int32_t ne_constant = 925718;
for (int left = 0; left < 2; left++) {
FOR_INT32_INPUTS(a) {
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
Node* p0 = m.Int32Constant(a);
Node* p1 = m.Parameter(0);
RawMachineLabel blocka, blockb;
if (left == 1) m.Branch(m.Word32Equal(p0, p1), &blocka, &blockb);
if (left == 0) m.Branch(m.Word32Equal(p1, p0), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(b) {
int32_t expect = a == b ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(b));
}
}
}
}
TEST(BranchCombineInt32CmpP) {
int32_t eq_constant = -1235;
int32_t ne_constant = 725018;
for (int op = 0; op < 2; op++) {
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* p0 = m.Parameter(0);
Node* p1 = m.Parameter(1);
RawMachineLabel blocka, blockb;
if (op == 0) m.Branch(m.Int32LessThan(p0, p1), &blocka, &blockb);
if (op == 1) m.Branch(m.Int32LessThanOrEqual(p0, p1), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect = 0;
if (op == 0) expect = a < b ? eq_constant : ne_constant;
if (op == 1) expect = a <= b ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
}
TEST(BranchCombineInt32CmpI) {
int32_t eq_constant = -1175;
int32_t ne_constant = 927711;
for (int op = 0; op < 2; op++) {
FOR_INT32_INPUTS(a) {
RawMachineAssemblerTester<int32_t> m(MachineType::Int32());
Node* p0 = m.Int32Constant(a);
Node* p1 = m.Parameter(0);
RawMachineLabel blocka, blockb;
if (op == 0) m.Branch(m.Int32LessThan(p0, p1), &blocka, &blockb);
if (op == 1) m.Branch(m.Int32LessThanOrEqual(p0, p1), &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
FOR_INT32_INPUTS(b) {
int32_t expect = 0;
if (op == 0) expect = a < b ? eq_constant : ne_constant;
if (op == 1) expect = a <= b ? eq_constant : ne_constant;
CHECK_EQ(expect, m.Call(b));
}
}
}
}
// Now come the sophisticated tests for many input shape combinations.
// Materializes a boolean (1 or 0) from a comparison.
class CmpMaterializeBoolGen : public BinopGen<int32_t> {
public:
CompareWrapper w;
bool invert;
CmpMaterializeBoolGen(IrOpcode::Value opcode, bool i)
: w(opcode), invert(i) {}
void gen(RawMachineAssemblerTester<int32_t>* m, Node* a, Node* b) override {
Node* cond = w.MakeNode(m, a, b);
if (invert) cond = m->Word32Equal(cond, m->Int32Constant(0));
m->Return(cond);
}
int32_t expected(int32_t a, int32_t b) override {
if (invert) return !w.Int32Compare(a, b) ? 1 : 0;
return w.Int32Compare(a, b) ? 1 : 0;
}
};
// Generates a branch and return one of two values from a comparison.
class CmpBranchGen : public BinopGen<int32_t> {
public:
CompareWrapper w;
bool invert;
bool true_first;
int32_t eq_constant;
int32_t ne_constant;
CmpBranchGen(IrOpcode::Value opcode, bool i, bool t, int32_t eq, int32_t ne)
: w(opcode), invert(i), true_first(t), eq_constant(eq), ne_constant(ne) {}
void gen(RawMachineAssemblerTester<int32_t>* m, Node* a, Node* b) override {
RawMachineLabel blocka, blockb;
Node* cond = w.MakeNode(m, a, b);
if (invert) cond = m->Word32Equal(cond, m->Int32Constant(0));
m->Branch(cond, &blocka, &blockb);
if (true_first) {
m->Bind(&blocka);
m->Return(m->Int32Constant(eq_constant));
m->Bind(&blockb);
m->Return(m->Int32Constant(ne_constant));
} else {
m->Bind(&blockb);
m->Return(m->Int32Constant(ne_constant));
m->Bind(&blocka);
m->Return(m->Int32Constant(eq_constant));
}
}
int32_t expected(int32_t a, int32_t b) override {
if (invert) return !w.Int32Compare(a, b) ? eq_constant : ne_constant;
return w.Int32Compare(a, b) ? eq_constant : ne_constant;
}
};
TEST(BranchCombineInt32CmpAllInputShapes_materialized) {
for (size_t i = 0; i < arraysize(int32cmp_opcodes); i++) {
CmpMaterializeBoolGen gen(int32cmp_opcodes[i], false);
Int32BinopInputShapeTester tester(&gen);
tester.TestAllInputShapes();
}
}
TEST(BranchCombineInt32CmpAllInputShapes_inverted_materialized) {
for (size_t i = 0; i < arraysize(int32cmp_opcodes); i++) {
CmpMaterializeBoolGen gen(int32cmp_opcodes[i], true);
Int32BinopInputShapeTester tester(&gen);
tester.TestAllInputShapes();
}
}
TEST(BranchCombineInt32CmpAllInputShapes_branch_true) {
for (int i = 0; i < static_cast<int>(arraysize(int32cmp_opcodes)); i++) {
CmpBranchGen gen(int32cmp_opcodes[i], false, false, 995 + i, -1011 - i);
Int32BinopInputShapeTester tester(&gen);
tester.TestAllInputShapes();
}
}
TEST(BranchCombineInt32CmpAllInputShapes_branch_false) {
for (int i = 0; i < static_cast<int>(arraysize(int32cmp_opcodes)); i++) {
CmpBranchGen gen(int32cmp_opcodes[i], false, true, 795 + i, -2011 - i);
Int32BinopInputShapeTester tester(&gen);
tester.TestAllInputShapes();
}
}
TEST(BranchCombineInt32CmpAllInputShapes_inverse_branch_true) {
for (int i = 0; i < static_cast<int>(arraysize(int32cmp_opcodes)); i++) {
CmpBranchGen gen(int32cmp_opcodes[i], true, false, 695 + i, -3011 - i);
Int32BinopInputShapeTester tester(&gen);
tester.TestAllInputShapes();
}
}
TEST(BranchCombineInt32CmpAllInputShapes_inverse_branch_false) {
for (int i = 0; i < static_cast<int>(arraysize(int32cmp_opcodes)); i++) {
CmpBranchGen gen(int32cmp_opcodes[i], true, true, 595 + i, -4011 - i);
Int32BinopInputShapeTester tester(&gen);
tester.TestAllInputShapes();
}
}
TEST(BranchCombineFloat64Compares) {
double inf = V8_INFINITY;
double nan = std::numeric_limits<double>::quiet_NaN();
double inputs[] = {0.0, 1.0, -1.0, -inf, inf, nan};
int32_t eq_constant = -1733;
int32_t ne_constant = 915118;
double input_a = 0.0;
double input_b = 0.0;
CompareWrapper cmps[] = {CompareWrapper(IrOpcode::kFloat64Equal),
CompareWrapper(IrOpcode::kFloat64LessThan),
CompareWrapper(IrOpcode::kFloat64LessThanOrEqual)};
for (size_t c = 0; c < arraysize(cmps); c++) {
CompareWrapper cmp = cmps[c];
for (int invert = 0; invert < 2; invert++) {
RawMachineAssemblerTester<int32_t> m;
Node* a = m.LoadFromPointer(&input_a, MachineType::Float64());
Node* b = m.LoadFromPointer(&input_b, MachineType::Float64());
RawMachineLabel blocka, blockb;
Node* cond = cmp.MakeNode(&m, a, b);
if (invert) cond = m.Word32Equal(cond, m.Int32Constant(0));
m.Branch(cond, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(eq_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(ne_constant));
for (size_t i = 0; i < arraysize(inputs); ++i) {
for (size_t j = 0; j < arraysize(inputs); ++j) {
input_a = inputs[i];
input_b = inputs[j];
int32_t expected =
invert ? (cmp.Float64Compare(input_a, input_b) ? ne_constant
: eq_constant)
: (cmp.Float64Compare(input_a, input_b) ? eq_constant
: ne_constant);
CHECK_EQ(expected, m.Call());
}
}
}
}
}
TEST(BranchCombineEffectLevel) {
// Test that the load doesn't get folded into the branch, as there's a store
// between them. See http://crbug.com/611976.
int32_t input = 0;
RawMachineAssemblerTester<int32_t> m;
Node* a = m.LoadFromPointer(&input, MachineType::Int32());
Node* compare = m.Word32And(a, m.Int32Constant(1));
Node* equal = m.Word32Equal(compare, m.Int32Constant(0));
m.StoreToPointer(&input, MachineRepresentation::kWord32, m.Int32Constant(1));
RawMachineLabel blocka, blockb;
m.Branch(equal, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(42));
m.Bind(&blockb);
m.Return(m.Int32Constant(0));
CHECK_EQ(42, m.Call());
}
TEST(BranchCombineInt32AddLessThanZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Int32LessThan(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect =
(base::AddWithWraparound(a, b) < 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineInt32AddGreaterThanOrEqualZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Int32GreaterThanOrEqual(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect =
(base::AddWithWraparound(a, b) >= 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineInt32ZeroGreaterThanAdd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Int32GreaterThan(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect =
(0 > base::AddWithWraparound(a, b)) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineInt32ZeroLessThanOrEqualAdd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Int32LessThanOrEqual(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect =
(0 <= base::AddWithWraparound(a, b)) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32AddLessThanOrEqualZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Uint32LessThanOrEqual(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = (a + b <= 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32AddGreaterThanZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Uint32GreaterThan(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = (a + b > 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32ZeroGreaterThanOrEqualAdd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Uint32GreaterThanOrEqual(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = (0 >= a + b) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32ZeroLessThanAdd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Int32Add(a, b);
Node* compare = m.Uint32LessThan(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = (0 < a + b) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineWord32AndLessThanZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Int32LessThan(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect = ((a & b) < 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineWord32AndGreaterThanOrEqualZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Int32GreaterThanOrEqual(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect = ((a & b) >= 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineInt32ZeroGreaterThanAnd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Int32GreaterThan(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect = (0 > (a & b)) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineInt32ZeroLessThanOrEqualAnd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Int32(),
MachineType::Int32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Int32LessThanOrEqual(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_INT32_INPUTS(a) {
FOR_INT32_INPUTS(b) {
int32_t expect = (0 <= (a & b)) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32AndLessThanOrEqualZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Uint32LessThanOrEqual(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = ((a & b) <= 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32AndGreaterThanZero) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Uint32GreaterThan(add, m.Int32Constant(0));
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = ((a & b) > 0) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32ZeroGreaterThanOrEqualAnd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Uint32GreaterThanOrEqual(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = (0 >= (a & b)) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
TEST(BranchCombineUint32ZeroLessThanAnd) {
int32_t t_constant = -1033;
int32_t f_constant = 825118;
RawMachineAssemblerTester<int32_t> m(MachineType::Uint32(),
MachineType::Uint32());
Node* a = m.Parameter(0);
Node* b = m.Parameter(1);
Node* add = m.Word32And(a, b);
Node* compare = m.Uint32LessThan(m.Int32Constant(0), add);
RawMachineLabel blocka, blockb;
m.Branch(compare, &blocka, &blockb);
m.Bind(&blocka);
m.Return(m.Int32Constant(t_constant));
m.Bind(&blockb);
m.Return(m.Int32Constant(f_constant));
FOR_UINT32_INPUTS(a) {
FOR_UINT32_INPUTS(b) {
int32_t expect = (0 < (a & b)) ? t_constant : f_constant;
CHECK_EQ(expect, m.Call(a, b));
}
}
}
} // namespace compiler
} // namespace internal
} // namespace v8
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