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Allocate for returning runtime code.

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This commit is contained in:
chriseth 2021-03-15 16:57:56 +01:00
parent 1814cad4f2
commit 79acebe46f
1 changed files with 16 additions and 29 deletions
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45
libsolidity/codegen/ir/IRGenerator.cpp
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@ -802,29 +802,24 @@ void IRGenerator::generateImplicitConstructors(ContractDefinition const& _contra
string IRGenerator::deployCode(ContractDefinition const& _contract)
{
Whiskers t(R"X(
<#loadImmutables>
let <var> := mload(<memoryOffset>)
</loadImmutables>
codecopy(0, dataoffset("<object>"), datasize("<object>"))
<#storeImmutables>
setimmutable(0, "<immutableName>", <var>)
</storeImmutables>
return(0, datasize("<object>"))
let <codeOffset> := <allocateUnbounded>()
codecopy(<codeOffset>, dataoffset("<object>"), datasize("<object>"))
<#immutables>
setimmutable(<codeOffset>, "<immutableName>", <value>)
</immutables>
return(<codeOffset>, datasize("<object>"))
)X");
t("allocateUnbounded", m_utils.allocateUnboundedFunction());
t("codeOffset", m_context.newYulVariable());
t("object", IRNames::deployedObject(_contract));
vector<map<string, string>> loadImmutables;
vector<map<string, string>> storeImmutables;
vector<map<string, string>> immutables;
if (_contract.isLibrary())
{
solAssert(ContractType(_contract).immutableVariables().empty(), "");
storeImmutables.emplace_back(map<string, string>{
{"var"s, "address()"},
{"immutableName"s, IRNames::libraryAddressImmutable()}
immutables.emplace_back(map<string, string>{
{"immutableName"s, IRNames::libraryAddressImmutable()},
{"value"s, "address()"}
});
}
@ -833,20 +828,12 @@ string IRGenerator::deployCode(ContractDefinition const& _contract)
{
solUnimplementedAssert(immutable->type()->isValueType(), "");
solUnimplementedAssert(immutable->type()->sizeOnStack() == 1, "");
string yulVar = m_context.newYulVariable();
loadImmutables.emplace_back(map<string, string>{
{"var"s, yulVar},
{"memoryOffset"s, to_string(m_context.immutableMemoryOffset(*immutable))}
});
storeImmutables.emplace_back(map<string, string>{
{"var"s, yulVar},
{"immutableName"s, to_string(immutable->id())}
immutables.emplace_back(map<string, string>{
{"immutableName"s, to_string(immutable->id())},
{"value"s, "mload(" + to_string(m_context.immutableMemoryOffset(*immutable)) + ")"}
});
}
t("loadImmutables", std::move(loadImmutables));
// reverse order to ease stack strain
reverse(storeImmutables.begin(), storeImmutables.end());
t("storeImmutables", std::move(storeImmutables));
t("immutables", std::move(immutables));
return t.render();
}