1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <vector> 6 7 #include "src/v8.h" 8 9 #include "src/interpreter/bytecodes.h" 10 #include "test/unittests/test-utils.h" 11 12 13 namespace v8 { 14 namespace internal { 15 namespace interpreter { 16 17 TEST(OperandConversion, Registers) { 18 for (int i = 0; i < 128; i++) { 19 uint8_t operand_value = Register(i).ToOperand(); 20 Register r = Register::FromOperand(operand_value); 21 CHECK_EQ(i, r.index()); 22 } 23 } 24 25 26 TEST(OperandConversion, Parameters) { 27 int parameter_counts[] = {7, 13, 99}; 28 29 size_t count = sizeof(parameter_counts) / sizeof(parameter_counts[0]); 30 for (size_t p = 0; p < count; p++) { 31 int parameter_count = parameter_counts[p]; 32 for (int i = 0; i < parameter_count; i++) { 33 Register r = Register::FromParameterIndex(i, parameter_count); 34 uint8_t operand_value = r.ToOperand(); 35 Register s = Register::FromOperand(operand_value); 36 CHECK_EQ(i, s.ToParameterIndex(parameter_count)); 37 } 38 } 39 } 40 41 42 TEST(OperandConversion, RegistersParametersNoOverlap) { 43 std::vector<uint8_t> operand_count(256); 44 45 for (int i = 0; i <= kMaxInt8; i++) { 46 Register r = Register(i); 47 uint8_t operand = r.ToOperand(); 48 operand_count[operand] += 1; 49 CHECK_EQ(operand_count[operand], 1); 50 } 51 52 int parameter_count = Register::MaxParameterIndex() + 1; 53 for (int i = 0; i < parameter_count; i++) { 54 Register r = Register::FromParameterIndex(i, parameter_count); 55 uint8_t operand = r.ToOperand(); 56 operand_count[operand] += 1; 57 CHECK_EQ(operand_count[operand], 1); 58 } 59 } 60 61 } // namespace interpreter 62 } // namespace internal 63 } // namespace v8 64
