305a36e0d4
R=rossberg@chromium.org,bmeurer@chromium.org,verwaest@chromium.org BUG=v8:3956 LOG=n Review URL: https://codereview.chromium.org/1700993002 Cr-Commit-Position: refs/heads/master@{#34067}
115 lines
3.8 KiB
C++
115 lines
3.8 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 "src/v8.h"
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#include "src/interpreter/bytecode-array-builder.h"
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#include "src/interpreter/bytecode-array-iterator.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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class BytecodeArrayIteratorTest : public TestWithIsolateAndZone {
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public:
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BytecodeArrayIteratorTest() {}
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~BytecodeArrayIteratorTest() override {}
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};
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TEST_F(BytecodeArrayIteratorTest, IteratesBytecodeArray) {
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// Use a builder to create an array with containing multiple bytecodes
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// with 0, 1 and 2 operands.
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BytecodeArrayBuilder builder(isolate(), zone(), 3, 2, 0);
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Factory* factory = isolate()->factory();
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Handle<HeapObject> heap_num_0 = factory->NewHeapNumber(2.718);
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Handle<HeapObject> heap_num_1 = factory->NewHeapNumber(2147483647);
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Smi* zero = Smi::FromInt(0);
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Smi* smi_0 = Smi::FromInt(64);
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Smi* smi_1 = Smi::FromInt(-65536);
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Register reg_0(0);
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Register reg_1(1);
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Register reg_2 = Register::FromParameterIndex(2, builder.parameter_count());
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Handle<String> name = factory->NewStringFromStaticChars("abc");
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int name_index = 3;
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int feedback_slot = 97;
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builder.LoadLiteral(heap_num_0)
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.LoadLiteral(heap_num_1)
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.LoadLiteral(zero)
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.LoadLiteral(smi_0)
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.LoadLiteral(smi_1)
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.LoadAccumulatorWithRegister(reg_0)
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.LoadNamedProperty(reg_1, name, feedback_slot)
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.StoreAccumulatorInRegister(reg_2)
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.CallRuntime(Runtime::kLoadIC_Miss, reg_0, 1)
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.Debugger()
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.Return();
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// Test iterator sees the expected output from the builder.
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BytecodeArrayIterator iterator(builder.ToBytecodeArray());
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant);
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CHECK(iterator.GetConstantForIndexOperand(0).is_identical_to(heap_num_0));
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant);
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CHECK(iterator.GetConstantForIndexOperand(0).is_identical_to(heap_num_1));
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaZero);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaSmi8);
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CHECK_EQ(Smi::FromInt(iterator.GetImmediateOperand(0)), smi_0);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant);
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CHECK_EQ(*iterator.GetConstantForIndexOperand(0), smi_1);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdar);
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CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_0.index());
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kLoadIC);
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CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_1.index());
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CHECK_EQ(iterator.GetIndexOperand(1), name_index);
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CHECK_EQ(iterator.GetIndexOperand(2), feedback_slot);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kStar);
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CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_2.index());
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kCallRuntime);
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CHECK_EQ(static_cast<Runtime::FunctionId>(iterator.GetIndexOperand(0)),
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Runtime::kLoadIC_Miss);
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CHECK_EQ(iterator.GetRegisterOperand(1).index(), reg_0.index());
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CHECK_EQ(iterator.GetRegisterCountOperand(2), 1);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kDebugger);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
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CHECK(!iterator.done());
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iterator.Advance();
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CHECK(iterator.done());
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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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