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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 "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());
int name_index = 21;
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_index, 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
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