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test_worst_create()

Documentation for tests/benchmark/test_worst_bytecode.py::test_worst_create@88e9fb8f.

Generate fixtures for these test cases for Osaka with:

fill -v tests/benchmark/test_worst_bytecode.py::test_worst_create -m benchmark

Test the CREATE and CREATE2 performance with different configurations.

Source code in tests/benchmark/test_worst_bytecode.py 
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@pytest.mark.parametrize(
    "opcode",
    [
        Op.CREATE,
        Op.CREATE2,
    ],
)
@pytest.mark.parametrize(
    "max_code_size_ratio, non_zero_data, value",
    [
        # To avoid a blowup of combinations, the value dimension is only
        # explored for the non-zero data case, so isn't affected by code size
        # influence.
        pytest.param(0, False, 0, id="0 bytes without value"),
        pytest.param(0, False, 1, id="0 bytes with value"),
        pytest.param(0.25, True, 0, id="0.25x max code size with non-zero data"),
        pytest.param(0.25, False, 0, id="0.25x max code size with zero data"),
        pytest.param(0.50, True, 0, id="0.50x max code size with non-zero data"),
        pytest.param(0.50, False, 0, id="0.50x max code size with zero data"),
        pytest.param(0.75, True, 0, id="0.75x max code size with non-zero data"),
        pytest.param(0.75, False, 0, id="0.75x max code size with zero data"),
        pytest.param(1.00, True, 0, id="max code size with non-zero data"),
        pytest.param(1.00, False, 0, id="max code size with zero data"),
    ],
)
def test_worst_create(
    benchmark_test: BenchmarkTestFiller,
    pre: Alloc,
    fork: Fork,
    opcode: Op,
    max_code_size_ratio: float,
    non_zero_data: bool,
    value: int,
) -> None:
    """
    Test the CREATE and CREATE2 performance with different configurations.
    """
    max_code_size = fork.max_code_size()

    code_size = int(max_code_size * max_code_size_ratio)

    # Deploy the initcode template which has following design:
    # ```
    # PUSH3(code_size)
    # [CODECOPY(DUP1) -- Conditional that non_zero_data is True]
    # RETURN(0, DUP1)
    # [<pad to code_size>] -- Conditional that non_zero_data is True]
    # ```
    code = (
        Op.PUSH3(code_size)
        + (Op.CODECOPY(size=Op.DUP1) if non_zero_data else Bytecode())
        + Op.RETURN(0, Op.DUP1)
    )
    if non_zero_data:  # Pad to code_size.
        code += bytes([i % 256 for i in range(code_size - len(code))])

    initcode_template_contract = pre.deploy_contract(code=code)

    # Create the benchmark contract which has the following design:
    # ```
    # PUSH(value)
    # [EXTCODECOPY(full initcode_template_contract)
    # -> Conditional that non_zero_data is True]
    #
    # JUMPDEST (#)
    # (CREATE|CREATE2)
    # (CREATE|CREATE2)
    # ...
    # JUMP(#)
    # ```
    setup = (
        Op.PUSH3(code_size)
        + Op.PUSH1(value)
        + Op.EXTCODECOPY(
            address=initcode_template_contract,
            size=Op.DUP2,  # DUP2 refers to the EXTCODESIZE value above.
        )
    )

    if opcode == Op.CREATE2:
        # For CREATE2, we provide an initial salt.
        setup += Op.PUSH1(42)

    attack_block = (
        # For CREATE:
        # - DUP2 refers to the EXTOCODESIZE value  pushed in code_prefix.
        # - DUP3 refers to PUSH1(value) above.
        Op.POP(Op.CREATE(value=Op.DUP3, offset=0, size=Op.DUP2))
        if opcode == Op.CREATE
        # For CREATE2: we manually push the arguments because we leverage the
        # return value of previous CREATE2 calls as salt for the next CREATE2
        # call.
        # - DUP4 is targeting the PUSH1(value) from the code_prefix.
        # - DUP3 is targeting the EXTCODESIZE value pushed in code_prefix.
        else Op.DUP3 + Op.PUSH0 + Op.DUP4 + Op.CREATE2
    )

    code = JumpLoopGenerator(setup=setup, attack_block=attack_block).generate_repeated_code(
        repeated_code=attack_block, setup=setup, fork=fork
    )

    tx = Transaction(
        # Set enough balance in the pre-alloc for `value > 0` configurations.
        to=pre.deploy_contract(code=code, balance=1_000_000_000 if value > 0 else 0),
        sender=pre.fund_eoa(),
    )

    benchmark_test(tx=tx)

Parametrized Test Cases

This test case is only parametrized by fork.

Test ID (Abbreviated) max_code_size_ratio non_zero_data value opcode
...fork_Prague-blockchain_test-0 bytes without value-opcode_CREATE 0 False 0 CREATE
...fork_Prague-blockchain_test-0 bytes without value-opcode_CREATE2 0 False 0 CREATE2
...fork_Prague-blockchain_test-0 bytes with value-opcode_CREATE 0 False 1 CREATE
...fork_Prague-blockchain_test-0 bytes with value-opcode_CREATE2 0 False 1 CREATE2
...fork_Prague-blockchain_test-0.25x max code size with non-zero data-opcode_CREATE 0.25 True 0 CREATE
...fork_Prague-blockchain_test-0.25x max code size with non-zero data-opcode_CREATE2 0.25 True 0 CREATE2
...fork_Prague-blockchain_test-0.25x max code size with zero data-opcode_CREATE 0.25 False 0 CREATE
...fork_Prague-blockchain_test-0.25x max code size with zero data-opcode_CREATE2 0.25 False 0 CREATE2
...fork_Prague-blockchain_test-0.50x max code size with non-zero data-opcode_CREATE 0.5 True 0 CREATE
...fork_Prague-blockchain_test-0.50x max code size with non-zero data-opcode_CREATE2 0.5 True 0 CREATE2
...fork_Prague-blockchain_test-0.50x max code size with zero data-opcode_CREATE 0.5 False 0 CREATE
...fork_Prague-blockchain_test-0.50x max code size with zero data-opcode_CREATE2 0.5 False 0 CREATE2
...fork_Prague-blockchain_test-0.75x max code size with non-zero data-opcode_CREATE 0.75 True 0 CREATE
...fork_Prague-blockchain_test-0.75x max code size with non-zero data-opcode_CREATE2 0.75 True 0 CREATE2
...fork_Prague-blockchain_test-0.75x max code size with zero data-opcode_CREATE 0.75 False 0 CREATE
...fork_Prague-blockchain_test-0.75x max code size with zero data-opcode_CREATE2 0.75 False 0 CREATE2
...fork_Prague-blockchain_test-max code size with non-zero data-opcode_CREATE 1.0 True 0 CREATE
...fork_Prague-blockchain_test-max code size with non-zero data-opcode_CREATE2 1.0 True 0 CREATE2
...fork_Prague-blockchain_test-max code size with zero data-opcode_CREATE 1.0 False 0 CREATE
...fork_Prague-blockchain_test-max code size with zero data-opcode_CREATE2 1.0 False 0 CREATE2
...fork_Osaka-blockchain_test-0 bytes without value-opcode_CREATE 0 False 0 CREATE
...fork_Osaka-blockchain_test-0 bytes without value-opcode_CREATE2 0 False 0 CREATE2
...fork_Osaka-blockchain_test-0 bytes with value-opcode_CREATE 0 False 1 CREATE
...fork_Osaka-blockchain_test-0 bytes with value-opcode_CREATE2 0 False 1 CREATE2
...fork_Osaka-blockchain_test-0.25x max code size with non-zero data-opcode_CREATE 0.25 True 0 CREATE
...fork_Osaka-blockchain_test-0.25x max code size with non-zero data-opcode_CREATE2 0.25 True 0 CREATE2
...fork_Osaka-blockchain_test-0.25x max code size with zero data-opcode_CREATE 0.25 False 0 CREATE
...fork_Osaka-blockchain_test-0.25x max code size with zero data-opcode_CREATE2 0.25 False 0 CREATE2
...fork_Osaka-blockchain_test-0.50x max code size with non-zero data-opcode_CREATE 0.5 True 0 CREATE
...fork_Osaka-blockchain_test-0.50x max code size with non-zero data-opcode_CREATE2 0.5 True 0 CREATE2
...fork_Osaka-blockchain_test-0.50x max code size with zero data-opcode_CREATE 0.5 False 0 CREATE
...fork_Osaka-blockchain_test-0.50x max code size with zero data-opcode_CREATE2 0.5 False 0 CREATE2
...fork_Osaka-blockchain_test-0.75x max code size with non-zero data-opcode_CREATE 0.75 True 0 CREATE
...fork_Osaka-blockchain_test-0.75x max code size with non-zero data-opcode_CREATE2 0.75 True 0 CREATE2
...fork_Osaka-blockchain_test-0.75x max code size with zero data-opcode_CREATE 0.75 False 0 CREATE
...fork_Osaka-blockchain_test-0.75x max code size with zero data-opcode_CREATE2 0.75 False 0 CREATE2
...fork_Osaka-blockchain_test-max code size with non-zero data-opcode_CREATE 1.0 True 0 CREATE
...fork_Osaka-blockchain_test-max code size with non-zero data-opcode_CREATE2 1.0 True 0 CREATE2
...fork_Osaka-blockchain_test-max code size with zero data-opcode_CREATE 1.0 False 0 CREATE
...fork_Osaka-blockchain_test-max code size with zero data-opcode_CREATE2 1.0 False 0 CREATE2