mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
143 lines
3.1 KiB
C++
143 lines
3.1 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @date 2017
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* Unit tests for the expression simplifier optimizer stage.
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*/
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#include <test/libjulia/Common.h>
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#include <libjulia/optimiser/ExpressionSimplifier.h>
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#include <libsolidity/inlineasm/AsmPrinter.h>
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#include <boost/test/unit_test.hpp>
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#include <boost/range/adaptors.hpp>
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#include <boost/algorithm/string/join.hpp>
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using namespace std;
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using namespace dev;
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using namespace dev::julia;
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using namespace dev::julia::test;
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using namespace dev::solidity;
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#define CHECK(_original, _expectation)\
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do\
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{\
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assembly::AsmPrinter p;\
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Block b = *(parse(_original, false).first);\
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(ExpressionSimplifier{})(b);\
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string result = p(b);\
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BOOST_CHECK_EQUAL(result, format(_expectation, false));\
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}\
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while(false)
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BOOST_AUTO_TEST_SUITE(YulSimplifier)
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BOOST_AUTO_TEST_CASE(smoke_test)
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{
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CHECK("{ }", "{ }");
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}
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BOOST_AUTO_TEST_CASE(constants)
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{
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CHECK(
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"{ let a := add(1, mul(3, 4)) }",
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"{ let a := 13 }"
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);
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}
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BOOST_AUTO_TEST_CASE(invariant)
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{
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CHECK(
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"{ let a := mload(sub(7, 7)) let b := sub(a, 0) }",
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"{ let a := mload(0) let b := a }"
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);
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}
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BOOST_AUTO_TEST_CASE(reversed)
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{
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CHECK(
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"{ let a := add(0, mload(0)) }",
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"{ let a := mload(0) }"
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);
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}
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BOOST_AUTO_TEST_CASE(constant_propagation)
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{
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CHECK(
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"{ let a := add(7, sub(mload(0), 7)) }",
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"{ let a := mload(0) }"
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);
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}
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BOOST_AUTO_TEST_CASE(identity_rules_simple)
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{
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CHECK(
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"{ let a := mload(0) let b := sub(a, a) }",
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"{ let a := mload(0) let b := 0 }"
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);
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}
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BOOST_AUTO_TEST_CASE(identity_rules_complex)
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{
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CHECK(
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"{ let a := sub(calldataload(0), calldataload(0)) }",
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"{ let a := 0 }"
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);
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}
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BOOST_AUTO_TEST_CASE(identity_rules_negative)
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{
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CHECK(
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"{ let a := sub(calldataload(1), calldataload(0)) }",
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"{ let a := sub(calldataload(1), calldataload(0)) }"
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);
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}
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BOOST_AUTO_TEST_CASE(including_function_calls)
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{
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CHECK(
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"{ function f() -> a {} let b := add(7, sub(f(), 7)) }",
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"{ function f() -> a {} let b := f() }"
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);
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}
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BOOST_AUTO_TEST_CASE(inside_for)
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{
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CHECK(
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"{ for { let a := 10 } iszero(eq(a, 0)) { a := add(a, 1) } {} }",
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"{ for { let a := 10 } iszero(iszero(a)) { a := add(a, 1) } {} }"
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);
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}
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BOOST_AUTO_TEST_CASE(mod_and)
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{
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CHECK(
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"{ mstore(0, mod(calldataload(0), exp(2, 8))) }",
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"{ mstore(0, and(calldataload(0), 255)) }"
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);
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CHECK(
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"{ mstore(0, mod(calldataload(0), exp(2, 255))) }",
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"{ mstore(0, and(calldataload(0), 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)) }"
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);
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}
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BOOST_AUTO_TEST_SUITE_END()
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