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[Sol - Yul] Add support for built-in logN().

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This commit is contained in:
Alexander Arlt
2020-04-25 11:10:28 -05:00
parent ed6c6b3170
commit 66edaf43f4
2 changed files with 108 additions and 65 deletions
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libsolidity/codegen/ir/IRGeneratorForStatements.cpp
+27
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@@ -818,6 +818,33 @@ void IRGeneratorForStatements::endVisit(FunctionCall const& _functionCall)
define(_functionCall) << "selfdestruct(" << expressionAsType(*arguments.front(), *parameterTypes.front()) << ")\n";
break;
}
case FunctionType::Kind::Log0:
case FunctionType::Kind::Log1:
case FunctionType::Kind::Log2:
case FunctionType::Kind::Log3:
case FunctionType::Kind::Log4:
{
unsigned logNumber = int(functionType->kind()) - int(FunctionType::Kind::Log0);
solAssert(arguments.size() == logNumber + 1, "");
ABIFunctions abi(m_context.evmVersion(), m_context.revertStrings(), m_context.functionCollector());
string indexedArgs;
for (unsigned arg = 0; arg < logNumber; ++arg)
indexedArgs += ", " + expressionAsType(*arguments[arg + 1], *(parameterTypes[arg + 1]));
Whiskers templ(R"({
let <pos> := <freeMemory>
let <end> := <encode>(<pos>, <nonIndexedArgs>)
<log>(<pos>, sub(<end>, <pos>) <indexedArgs>)
})");
templ("pos", m_context.newYulVariable());
templ("end", m_context.newYulVariable());
templ("freeMemory", freeMemory());
templ("encode", abi.tupleEncoder({arguments.front()->annotation().type},{parameterTypes.front()}));
templ("nonIndexedArgs", IRVariable(*arguments.front()).commaSeparatedList());
templ("log", "log" + to_string(logNumber));
templ("indexedArgs", indexedArgs);
m_code << templ.render();
break;
}
default:
solUnimplemented("FunctionKind " + toString(static_cast<int>(functionType->kind())) + " not yet implemented");
}