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// Copyright 2015 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 <vector>
#include "src/v8.h"
#include "src/interpreter/bytecodes.h"
#include "test/unittests/test-utils.h"
namespace v8 {
namespace internal {
namespace interpreter {
TEST(OperandConversion, Registers) {
int register_count = Register::MaxRegisterIndex() + 1;
int step = register_count / 7;
for (int i = 0; i < register_count; i += step) {
if (i <= kMaxInt8) {
uint8_t operand0 = Register(i).ToOperand();
Register reg0 = Register::FromOperand(operand0);
CHECK_EQ(i, reg0.index());
}
uint16_t operand1 = Register(i).ToWideOperand();
Register reg1 = Register::FromWideOperand(operand1);
CHECK_EQ(i, reg1.index());
uint32_t operand2 = Register(i).ToRawOperand();
Register reg2 = Register::FromRawOperand(operand2);
CHECK_EQ(i, reg2.index());
}
for (int i = 0; i <= kMaxUInt8; i++) {
uint8_t operand = static_cast<uint8_t>(i);
Register reg = Register::FromOperand(operand);
if (i > 0 && i < -kMinInt8) {
CHECK(reg.is_parameter());
} else {
CHECK(!reg.is_parameter());
}
}
}
TEST(OperandConversion, Parameters) {
int parameter_counts[] = {7, 13, 99};
size_t count = sizeof(parameter_counts) / sizeof(parameter_counts[0]);
for (size_t p = 0; p < count; p++) {
int parameter_count = parameter_counts[p];
for (int i = 0; i < parameter_count; i++) {
Register r = Register::FromParameterIndex(i, parameter_count);
uint8_t operand_value = r.ToOperand();
Register s = Register::FromOperand(operand_value);
CHECK_EQ(i, s.ToParameterIndex(parameter_count));
}
}
}
TEST(OperandConversion, RegistersParametersNoOverlap) {
int register_count = Register::MaxRegisterIndex() + 1;
int parameter_count = Register::MaxParameterIndex() + 1;
int32_t register_space_size = base::bits::RoundUpToPowerOfTwo32(
static_cast<uint32_t>(register_count + parameter_count));
uint32_t range = static_cast<uint32_t>(register_space_size);
std::vector<uint8_t> operand_count(range);
for (int i = 0; i < register_count; i += 1) {
Register r = Register(i);
uint32_t operand = r.ToWideOperand();
CHECK_LT(operand, operand_count.size());
operand_count[operand] += 1;
CHECK_EQ(operand_count[operand], 1);
}
for (int i = 0; i < parameter_count; i += 1) {
Register r = Register::FromParameterIndex(i, parameter_count);
uint32_t operand = r.ToWideOperand();
CHECK_LT(operand, operand_count.size());
operand_count[operand] += 1;
CHECK_EQ(operand_count[operand], 1);
}
}
TEST(Bytecodes, HasAnyRegisterOperands) {
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kAdd), 1);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kCall), 2);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kCallRuntime), 1);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kCallRuntimeWide), 1);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kCallRuntimeForPair),
2);
CHECK_EQ(
Bytecodes::NumberOfRegisterOperands(Bytecode::kCallRuntimeForPairWide),
2);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kDeletePropertyStrict),
1);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kForInPrepare), 1);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kForInPrepareWide), 1);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kInc), 0);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kJumpIfTrue), 0);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kNew), 2);
CHECK_EQ(Bytecodes::NumberOfRegisterOperands(Bytecode::kToName), 0);
}
TEST(Bytecodes, RegisterOperandBitmaps) {
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kAdd), 1);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kCallRuntimeForPair),
10);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kStar), 1);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kMov), 3);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kTestIn), 1);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kForInPrepare), 1);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kForInDone), 3);
CHECK_EQ(Bytecodes::GetRegisterOperandBitmap(Bytecode::kForInNext), 7);
}
TEST(Bytecodes, RegisterOperands) {
CHECK(Bytecodes::IsRegisterOperandType(OperandType::kReg8));
CHECK(Bytecodes::IsRegisterInputOperandType(OperandType::kReg8));
CHECK(!Bytecodes::IsRegisterOutputOperandType(OperandType::kReg8));
CHECK(!Bytecodes::IsRegisterInputOperandType(OperandType::kRegOut8));
CHECK(Bytecodes::IsRegisterOutputOperandType(OperandType::kRegOut8));
#define IS_REGISTER_OPERAND_TYPE(Name, _) \
CHECK(Bytecodes::IsRegisterOperandType(OperandType::k##Name));
REGISTER_OPERAND_TYPE_LIST(IS_REGISTER_OPERAND_TYPE)
#undef IS_REGISTER_OPERAND_TYPE
#define IS_NOT_REGISTER_OPERAND_TYPE(Name, _) \
CHECK(!Bytecodes::IsRegisterOperandType(OperandType::k##Name));
NON_REGISTER_OPERAND_TYPE_LIST(IS_NOT_REGISTER_OPERAND_TYPE)
#undef IS_NOT_REGISTER_OPERAND_TYPE
#define IS_REGISTER_INPUT_OPERAND_TYPE(Name, _) \
CHECK(Bytecodes::IsRegisterInputOperandType(OperandType::k##Name));
REGISTER_INPUT_OPERAND_TYPE_LIST(IS_REGISTER_INPUT_OPERAND_TYPE)
#undef IS_REGISTER_INPUT_OPERAND_TYPE
#define IS_NOT_REGISTER_INPUT_OPERAND_TYPE(Name, _) \
CHECK(!Bytecodes::IsRegisterInputOperandType(OperandType::k##Name));
NON_REGISTER_OPERAND_TYPE_LIST(IS_NOT_REGISTER_INPUT_OPERAND_TYPE);
REGISTER_OUTPUT_OPERAND_TYPE_LIST(IS_NOT_REGISTER_INPUT_OPERAND_TYPE)
#undef IS_NOT_REGISTER_INPUT_OPERAND_TYPE
#define IS_REGISTER_OUTPUT_OPERAND_TYPE(Name, _) \
CHECK(Bytecodes::IsRegisterOutputOperandType(OperandType::k##Name));
REGISTER_OUTPUT_OPERAND_TYPE_LIST(IS_REGISTER_OUTPUT_OPERAND_TYPE)
#undef IS_REGISTER_OUTPUT_OPERAND_TYPE
#define IS_NOT_REGISTER_OUTPUT_OPERAND_TYPE(Name, _) \
CHECK(!Bytecodes::IsRegisterOutputOperandType(OperandType::k##Name));
NON_REGISTER_OPERAND_TYPE_LIST(IS_NOT_REGISTER_OUTPUT_OPERAND_TYPE)
REGISTER_INPUT_OPERAND_TYPE_LIST(IS_NOT_REGISTER_OUTPUT_OPERAND_TYPE)
#undef IS_NOT_REGISTER_INPUT_OPERAND_TYPE
}
TEST(Bytecodes, DebugBreak) {
for (uint32_t i = 0; i < Bytecodes::ToByte(Bytecode::kLast); i++) {
Bytecode bytecode = Bytecodes::FromByte(i);
Bytecode debugbreak = Bytecodes::GetDebugBreak(bytecode);
if (!Bytecodes::IsDebugBreak(debugbreak)) {
PrintF("Bytecode %s has no matching debug break with length %d\n",
Bytecodes::ToString(bytecode), Bytecodes::Size(bytecode));
CHECK(false);
}
}
}
} // namespace interpreter
} // namespace internal
} // namespace v8
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