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Introduce typed EVM dialect.

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This commit is contained in:
chriseth
2020-01-29 17:25:25 +01:00
parent e41155cf48
commit 90c98a3289
3 changed files with 75 additions and 11 deletions
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libyul/backends/evm/EVMDialect.cpp
+55 -9
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@@ -203,15 +203,6 @@ EVMDialect const& EVMDialect::strictAssemblyForEVMObjects(langutil::EVMVersion _
return *dialects[_version];
}
EVMDialect const& EVMDialect::yulForEVM(langutil::EVMVersion _version)
{
static map<langutil::EVMVersion, unique_ptr<EVMDialect const>> dialects;
static YulStringRepository::ResetCallback callback{[&] { dialects.clear(); }};
if (!dialects[_version])
dialects[_version] = make_unique<EVMDialect>(_version, false);
return *dialects[_version];
}
SideEffects EVMDialect::sideEffectsOfInstruction(evmasm::Instruction _instruction)
{
return SideEffects{
@@ -222,3 +213,58 @@ SideEffects EVMDialect::sideEffectsOfInstruction(evmasm::Instruction _instructio
evmasm::SemanticInformation::invalidatesMemory(_instruction)
};
}
EVMDialectTyped::EVMDialectTyped(langutil::EVMVersion _evmVersion, bool _objectAccess):
EVMDialect(_evmVersion, _objectAccess)
{
defaultType = "u256"_yulstring;
m_functions["lt"_yulstring].returns = {"bool"_yulstring};
m_functions["gt"_yulstring].returns = {"bool"_yulstring};
m_functions["slt"_yulstring].returns = {"bool"_yulstring};
m_functions["sgt"_yulstring].returns = {"bool"_yulstring};
m_functions["eq"_yulstring].returns = {"bool"_yulstring};
m_functions["iszero"_yulstring].returns = {"bool"_yulstring};
m_functions["bitand"_yulstring] = m_functions["and"_yulstring];
m_functions["bitor"_yulstring] = m_functions["or"_yulstring];
m_functions["bitxor"_yulstring] = m_functions["xor"_yulstring];
m_functions["and"_yulstring].parameters = {"bool"_yulstring, "bool"_yulstring};
m_functions["and"_yulstring].returns = {"bool"_yulstring};
m_functions["or"_yulstring].parameters = {"bool"_yulstring, "bool"_yulstring};
m_functions["or"_yulstring].returns = {"bool"_yulstring};
m_functions["xor"_yulstring].parameters = {"bool"_yulstring, "bool"_yulstring};
m_functions["xor"_yulstring].returns = {"bool"_yulstring};
m_functions["isfalse"_yulstring] = m_functions["iszero"_yulstring];
m_functions["isfalse"_yulstring].parameters = {"bool"_yulstring};
m_functions["popbool"_yulstring] = m_functions["pop"_yulstring];
m_functions["popbool"_yulstring].parameters = {"bool"_yulstring};
m_functions.insert(createFunction("bool_to_u256", 1, 1, {}, false, [](
FunctionCall const&,
AbstractAssembly&,
BuiltinContext&,
std::function<void()> _visitArguments
) {
_visitArguments();
}));
m_functions["bool_to_u256"_yulstring].parameters = {"bool"_yulstring};
m_functions.insert(createFunction("u256_to_bool", 1, 1, {}, false, [](
FunctionCall const&,
AbstractAssembly& _assembly,
BuiltinContext&,
std::function<void()> _visitArguments
) {
// TODO Should a value larger than 1 be invalid?
_visitArguments();
_assembly.appendInstruction(evmasm::Instruction::ISZERO);
_assembly.appendInstruction(evmasm::Instruction::ISZERO);
}));
m_functions["u256_to_bool"_yulstring].returns = {"bool"_yulstring};
}
EVMDialectTyped const& EVMDialectTyped::instance(langutil::EVMVersion _version)
{
static map<langutil::EVMVersion, unique_ptr<EVMDialectTyped const>> dialects;
static YulStringRepository::ResetCallback callback{[&] { dialects.clear(); }};
if (!dialects[_version])
dialects[_version] = make_unique<EVMDialectTyped>(_version, true);
return *dialects[_version];
}