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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) {
for (int i = 0; i < 128; i++) {
uint8_t operand_value = Register(i).ToOperand();
Register r = Register::FromOperand(operand_value);
CHECK_EQ(i, r.index());
}
}
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) {
std::vector<uint8_t> operand_count(256);
for (int i = 0; i <= Register::kMaxRegisterIndex; i++) {
Register r = Register(i);
uint8_t operand = r.ToOperand();
operand_count[operand] += 1;
CHECK_EQ(operand_count[operand], 1);
}
int parameter_count = Register::MaxParameterIndex() + 1;
for (int i = 0; i < parameter_count; i++) {
Register r = Register::FromParameterIndex(i, parameter_count);
uint8_t operand = r.ToOperand();
operand_count[operand] += 1;
CHECK_EQ(operand_count[operand], 1);
}
}
} // namespace interpreter
} // namespace internal
} // namespace v8
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