6c9ef89540
Avoids the always generated Star bytecodes after ObjectLiteral. BUG=v4:4820 LOG=n Review-Url: https://codereview.chromium.org/2216023003 Cr-Commit-Position: refs/heads/master@{#38480}
250 lines
10 KiB
C++
250 lines
10 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <vector>
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#include "src/v8.h"
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#include "src/interpreter/bytecode-register.h"
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#include "src/interpreter/bytecodes.h"
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#include "test/unittests/test-utils.h"
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namespace v8 {
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namespace internal {
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namespace interpreter {
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TEST(OperandConversion, Registers) {
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int register_count = 128;
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int step = register_count / 7;
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for (int i = 0; i < register_count; i += step) {
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if (i <= kMaxInt8) {
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uint32_t operand0 = Register(i).ToOperand();
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Register reg0 = Register::FromOperand(operand0);
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CHECK_EQ(i, reg0.index());
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}
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uint32_t operand1 = Register(i).ToOperand();
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Register reg1 = Register::FromOperand(operand1);
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CHECK_EQ(i, reg1.index());
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uint32_t operand2 = Register(i).ToOperand();
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Register reg2 = Register::FromOperand(operand2);
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CHECK_EQ(i, reg2.index());
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}
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}
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TEST(OperandConversion, Parameters) {
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int parameter_counts[] = {7, 13, 99};
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size_t count = sizeof(parameter_counts) / sizeof(parameter_counts[0]);
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for (size_t p = 0; p < count; p++) {
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int parameter_count = parameter_counts[p];
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for (int i = 0; i < parameter_count; i++) {
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Register r = Register::FromParameterIndex(i, parameter_count);
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uint32_t operand_value = r.ToOperand();
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Register s = Register::FromOperand(operand_value);
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CHECK_EQ(i, s.ToParameterIndex(parameter_count));
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}
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}
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}
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TEST(OperandConversion, RegistersParametersNoOverlap) {
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int register_count = 128;
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int parameter_count = 100;
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int32_t register_space_size = base::bits::RoundUpToPowerOfTwo32(
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static_cast<uint32_t>(register_count + parameter_count));
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uint32_t range = static_cast<uint32_t>(register_space_size);
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std::vector<uint8_t> operand_count(range);
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for (int i = 0; i < register_count; i += 1) {
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Register r = Register(i);
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int32_t operand = r.ToOperand();
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uint8_t index = static_cast<uint8_t>(operand);
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CHECK_LT(index, operand_count.size());
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operand_count[index] += 1;
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CHECK_EQ(operand_count[index], 1);
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}
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for (int i = 0; i < parameter_count; i += 1) {
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Register r = Register::FromParameterIndex(i, parameter_count);
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uint32_t operand = r.ToOperand();
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uint8_t index = static_cast<uint8_t>(operand);
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CHECK_LT(index, operand_count.size());
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operand_count[index] += 1;
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CHECK_EQ(operand_count[index], 1);
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}
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}
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TEST(OperandScaling, ScalableAndNonScalable) {
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const OperandScale kOperandScales[] = {
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#define VALUE(Name, _) OperandScale::k##Name,
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OPERAND_SCALE_LIST(VALUE)
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#undef VALUE
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};
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for (OperandScale operand_scale : kOperandScales) {
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int scale = static_cast<int>(operand_scale);
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CHECK_EQ(Bytecodes::Size(Bytecode::kCallRuntime, operand_scale),
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1 + 2 + 2 * scale);
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CHECK_EQ(Bytecodes::Size(Bytecode::kCreateObjectLiteral, operand_scale),
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1 + 2 * scale + 1 + 1 * scale);
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CHECK_EQ(Bytecodes::Size(Bytecode::kTestIn, operand_scale), 1 + scale);
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}
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}
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TEST(Bytecodes, RegisterOperands) {
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CHECK(Bytecodes::IsRegisterOperandType(OperandType::kReg));
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CHECK(Bytecodes::IsRegisterInputOperandType(OperandType::kReg));
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CHECK(!Bytecodes::IsRegisterOutputOperandType(OperandType::kReg));
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CHECK(!Bytecodes::IsRegisterInputOperandType(OperandType::kRegOut));
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CHECK(Bytecodes::IsRegisterOutputOperandType(OperandType::kRegOut));
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#define IS_REGISTER_OPERAND_TYPE(Name, _) \
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CHECK(Bytecodes::IsRegisterOperandType(OperandType::k##Name));
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REGISTER_OPERAND_TYPE_LIST(IS_REGISTER_OPERAND_TYPE)
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#undef IS_REGISTER_OPERAND_TYPE
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#define IS_NOT_REGISTER_OPERAND_TYPE(Name, _) \
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CHECK(!Bytecodes::IsRegisterOperandType(OperandType::k##Name));
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NON_REGISTER_OPERAND_TYPE_LIST(IS_NOT_REGISTER_OPERAND_TYPE)
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#undef IS_NOT_REGISTER_OPERAND_TYPE
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#define IS_REGISTER_INPUT_OPERAND_TYPE(Name, _) \
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CHECK(Bytecodes::IsRegisterInputOperandType(OperandType::k##Name));
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REGISTER_INPUT_OPERAND_TYPE_LIST(IS_REGISTER_INPUT_OPERAND_TYPE)
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#undef IS_REGISTER_INPUT_OPERAND_TYPE
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#define IS_NOT_REGISTER_INPUT_OPERAND_TYPE(Name, _) \
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CHECK(!Bytecodes::IsRegisterInputOperandType(OperandType::k##Name));
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NON_REGISTER_OPERAND_TYPE_LIST(IS_NOT_REGISTER_INPUT_OPERAND_TYPE);
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REGISTER_OUTPUT_OPERAND_TYPE_LIST(IS_NOT_REGISTER_INPUT_OPERAND_TYPE)
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#undef IS_NOT_REGISTER_INPUT_OPERAND_TYPE
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#define IS_REGISTER_OUTPUT_OPERAND_TYPE(Name, _) \
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CHECK(Bytecodes::IsRegisterOutputOperandType(OperandType::k##Name));
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REGISTER_OUTPUT_OPERAND_TYPE_LIST(IS_REGISTER_OUTPUT_OPERAND_TYPE)
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#undef IS_REGISTER_OUTPUT_OPERAND_TYPE
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#define IS_NOT_REGISTER_OUTPUT_OPERAND_TYPE(Name, _) \
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CHECK(!Bytecodes::IsRegisterOutputOperandType(OperandType::k##Name));
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NON_REGISTER_OPERAND_TYPE_LIST(IS_NOT_REGISTER_OUTPUT_OPERAND_TYPE)
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REGISTER_INPUT_OPERAND_TYPE_LIST(IS_NOT_REGISTER_OUTPUT_OPERAND_TYPE)
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#undef IS_NOT_REGISTER_INPUT_OPERAND_TYPE
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}
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TEST(Bytecodes, DebugBreakExistForEachBytecode) {
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static const OperandScale kOperandScale = OperandScale::kSingle;
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#define CHECK_DEBUG_BREAK_SIZE(Name, ...) \
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if (!Bytecodes::IsDebugBreak(Bytecode::k##Name) && \
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!Bytecodes::IsPrefixScalingBytecode(Bytecode::k##Name)) { \
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Bytecode debug_bytecode = Bytecodes::GetDebugBreak(Bytecode::k##Name); \
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CHECK_EQ(Bytecodes::Size(Bytecode::k##Name, kOperandScale), \
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Bytecodes::Size(debug_bytecode, kOperandScale)); \
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}
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BYTECODE_LIST(CHECK_DEBUG_BREAK_SIZE)
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#undef CHECK_DEBUG_BREAK_SIZE
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}
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TEST(Bytecodes, DebugBreakForPrefixBytecodes) {
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CHECK_EQ(Bytecode::kDebugBreakWide,
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Bytecodes::GetDebugBreak(Bytecode::kWide));
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CHECK_EQ(Bytecode::kDebugBreakExtraWide,
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Bytecodes::GetDebugBreak(Bytecode::kExtraWide));
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}
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TEST(Bytecodes, PrefixMappings) {
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Bytecode prefixes[] = {Bytecode::kWide, Bytecode::kExtraWide};
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TRACED_FOREACH(Bytecode, prefix, prefixes) {
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CHECK_EQ(prefix, Bytecodes::OperandScaleToPrefixBytecode(
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Bytecodes::PrefixBytecodeToOperandScale(prefix)));
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}
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}
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TEST(Bytecodes, SizesForSignedOperands) {
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CHECK(Bytecodes::SizeForSignedOperand(0) == OperandSize::kByte);
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CHECK(Bytecodes::SizeForSignedOperand(kMaxInt8) == OperandSize::kByte);
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CHECK(Bytecodes::SizeForSignedOperand(kMinInt8) == OperandSize::kByte);
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CHECK(Bytecodes::SizeForSignedOperand(kMaxInt8 + 1) == OperandSize::kShort);
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CHECK(Bytecodes::SizeForSignedOperand(kMinInt8 - 1) == OperandSize::kShort);
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CHECK(Bytecodes::SizeForSignedOperand(kMaxInt16) == OperandSize::kShort);
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CHECK(Bytecodes::SizeForSignedOperand(kMinInt16) == OperandSize::kShort);
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CHECK(Bytecodes::SizeForSignedOperand(kMaxInt16 + 1) == OperandSize::kQuad);
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CHECK(Bytecodes::SizeForSignedOperand(kMinInt16 - 1) == OperandSize::kQuad);
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CHECK(Bytecodes::SizeForSignedOperand(kMaxInt) == OperandSize::kQuad);
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CHECK(Bytecodes::SizeForSignedOperand(kMinInt) == OperandSize::kQuad);
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}
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TEST(Bytecodes, SizesForUnsignedOperands) {
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// int overloads
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CHECK(Bytecodes::SizeForUnsignedOperand(0) == OperandSize::kByte);
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CHECK(Bytecodes::SizeForUnsignedOperand(kMaxUInt8) == OperandSize::kByte);
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CHECK(Bytecodes::SizeForUnsignedOperand(kMaxUInt8 + 1) ==
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OperandSize::kShort);
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CHECK(Bytecodes::SizeForUnsignedOperand(kMaxUInt16) == OperandSize::kShort);
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CHECK(Bytecodes::SizeForUnsignedOperand(kMaxUInt16 + 1) ==
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OperandSize::kQuad);
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// size_t overloads
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CHECK(Bytecodes::SizeForUnsignedOperand(static_cast<size_t>(0)) ==
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OperandSize::kByte);
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CHECK(Bytecodes::SizeForUnsignedOperand(static_cast<size_t>(kMaxUInt8)) ==
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OperandSize::kByte);
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CHECK(Bytecodes::SizeForUnsignedOperand(static_cast<size_t>(kMaxUInt8 + 1)) ==
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OperandSize::kShort);
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CHECK(Bytecodes::SizeForUnsignedOperand(static_cast<size_t>(kMaxUInt16)) ==
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OperandSize::kShort);
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CHECK(Bytecodes::SizeForUnsignedOperand(
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static_cast<size_t>(kMaxUInt16 + 1)) == OperandSize::kQuad);
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CHECK(Bytecodes::SizeForUnsignedOperand(static_cast<size_t>(kMaxUInt32)) ==
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OperandSize::kQuad);
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}
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TEST(OperandScale, PrefixesRequired) {
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CHECK(!Bytecodes::OperandScaleRequiresPrefixBytecode(OperandScale::kSingle));
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CHECK(Bytecodes::OperandScaleRequiresPrefixBytecode(OperandScale::kDouble));
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CHECK(
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Bytecodes::OperandScaleRequiresPrefixBytecode(OperandScale::kQuadruple));
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CHECK(Bytecodes::OperandScaleToPrefixBytecode(OperandScale::kDouble) ==
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Bytecode::kWide);
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CHECK(Bytecodes::OperandScaleToPrefixBytecode(OperandScale::kQuadruple) ==
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Bytecode::kExtraWide);
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}
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TEST(AccumulatorUse, LogicalOperators) {
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CHECK_EQ(AccumulatorUse::kNone | AccumulatorUse::kRead,
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AccumulatorUse::kRead);
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CHECK_EQ(AccumulatorUse::kRead | AccumulatorUse::kWrite,
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AccumulatorUse::kReadWrite);
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CHECK_EQ(AccumulatorUse::kRead & AccumulatorUse::kReadWrite,
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AccumulatorUse::kRead);
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CHECK_EQ(AccumulatorUse::kRead & AccumulatorUse::kWrite,
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AccumulatorUse::kNone);
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}
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TEST(AccumulatorUse, SampleBytecodes) {
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CHECK(Bytecodes::ReadsAccumulator(Bytecode::kStar));
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CHECK(!Bytecodes::WritesAccumulator(Bytecode::kStar));
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CHECK_EQ(Bytecodes::GetAccumulatorUse(Bytecode::kStar),
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AccumulatorUse::kRead);
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CHECK(!Bytecodes::ReadsAccumulator(Bytecode::kLdar));
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CHECK(Bytecodes::WritesAccumulator(Bytecode::kLdar));
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CHECK_EQ(Bytecodes::GetAccumulatorUse(Bytecode::kLdar),
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AccumulatorUse::kWrite);
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CHECK(Bytecodes::ReadsAccumulator(Bytecode::kAdd));
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CHECK(Bytecodes::WritesAccumulator(Bytecode::kAdd));
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CHECK_EQ(Bytecodes::GetAccumulatorUse(Bytecode::kAdd),
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AccumulatorUse::kReadWrite);
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}
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TEST(AccumulatorUse, AccumulatorUseToString) {
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std::set<std::string> names;
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names.insert(Bytecodes::AccumulatorUseToString(AccumulatorUse::kNone));
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names.insert(Bytecodes::AccumulatorUseToString(AccumulatorUse::kRead));
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names.insert(Bytecodes::AccumulatorUseToString(AccumulatorUse::kWrite));
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names.insert(Bytecodes::AccumulatorUseToString(AccumulatorUse::kReadWrite));
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CHECK_EQ(names.size(), 4);
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}
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} // namespace interpreter
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} // namespace internal
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} // namespace v8
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