| // 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 "src/v8.h" |
| |
| #include "src/interpreter/bytecode-array-builder.h" |
| #include "src/interpreter/bytecode-array-iterator.h" |
| #include "test/unittests/test-utils.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| class BytecodeArrayIteratorTest : public TestWithIsolateAndZone { |
| public: |
| BytecodeArrayIteratorTest() {} |
| ~BytecodeArrayIteratorTest() override {} |
| }; |
| |
| |
| TEST_F(BytecodeArrayIteratorTest, IteratesBytecodeArray) { |
| // Use a builder to create an array with containing multiple bytecodes |
| // with 0, 1 and 2 operands. |
| BytecodeArrayBuilder builder(isolate(), zone()); |
| builder.set_parameter_count(3); |
| builder.set_locals_count(2); |
| builder.set_context_count(0); |
| |
| Factory* factory = isolate()->factory(); |
| Handle<HeapObject> heap_num_0 = factory->NewHeapNumber(2.718); |
| Handle<HeapObject> heap_num_1 = factory->NewHeapNumber(2147483647); |
| Smi* zero = Smi::FromInt(0); |
| Smi* smi_0 = Smi::FromInt(64); |
| Smi* smi_1 = Smi::FromInt(-65536); |
| Register reg_0(0); |
| Register reg_1(1); |
| Register reg_2 = Register::FromParameterIndex(2, builder.parameter_count()); |
| Handle<String> name = factory->NewStringFromStaticChars("abc"); |
| int name_index = 3; |
| int feedback_slot = 97; |
| |
| builder.LoadLiteral(heap_num_0) |
| .LoadLiteral(heap_num_1) |
| .LoadLiteral(zero) |
| .LoadLiteral(smi_0) |
| .LoadLiteral(smi_1) |
| .LoadAccumulatorWithRegister(reg_0) |
| .LoadNamedProperty(reg_1, name, feedback_slot, LanguageMode::SLOPPY) |
| .StoreAccumulatorInRegister(reg_2) |
| .CallRuntime(Runtime::kLoadIC_Miss, reg_0, 1) |
| .Return(); |
| |
| // Test iterator sees the expected output from the builder. |
| BytecodeArrayIterator iterator(builder.ToBytecodeArray()); |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant); |
| CHECK(iterator.GetConstantForIndexOperand(0).is_identical_to(heap_num_0)); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant); |
| CHECK(iterator.GetConstantForIndexOperand(0).is_identical_to(heap_num_1)); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaZero); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaSmi8); |
| CHECK_EQ(Smi::FromInt(iterator.GetImmediateOperand(0)), smi_0); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant); |
| CHECK_EQ(*iterator.GetConstantForIndexOperand(0), smi_1); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdar); |
| CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_0.index()); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kLoadICSloppy); |
| CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_1.index()); |
| CHECK_EQ(iterator.GetIndexOperand(1), name_index); |
| CHECK_EQ(iterator.GetIndexOperand(2), feedback_slot); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kStar); |
| CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_2.index()); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kCallRuntime); |
| CHECK_EQ(static_cast<Runtime::FunctionId>(iterator.GetIndexOperand(0)), |
| Runtime::kLoadIC_Miss); |
| CHECK_EQ(iterator.GetRegisterOperand(1).index(), reg_0.index()); |
| CHECK_EQ(iterator.GetCountOperand(2), 1); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| |
| CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn); |
| CHECK(!iterator.done()); |
| iterator.Advance(); |
| CHECK(iterator.done()); |
| } |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |