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YulStack: Don't enable stack optimizations in unoptimized mode when msize is present

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This commit is contained in:
Kamil Śliwak 2023-05-15 14:20:56 +02:00
parent 25be38905f
commit 51cd87c94d
1 changed files with 15 additions and 4 deletions
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19
libyul/YulStack.cpp
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@ -30,6 +30,7 @@
#include <libyul/backends/evm/EVMObjectCompiler.h>
#include <libyul/backends/evm/EVMMetrics.h>
#include <libyul/ObjectParser.h>
#include <libyul/optimiser/Semantics.h>
#include <libyul/optimiser/Suite.h>
#include <libevmasm/Assembly.h>
#include <liblangutil/Scanner.h>
@ -87,6 +88,13 @@ bool YulStack::parseAndAnalyze(std::string const& _sourceName, std::string const
void YulStack::optimize()
{
yulAssert(m_analysisSuccessful, "Analysis was not successful.");
yulAssert(m_parserResult);
if (
!m_optimiserSettings.runYulOptimiser &&
yul::MSizeFinder::containsMSize(languageToDialect(m_language, m_evmVersion), *m_parserResult)
)
return;
m_analysisSuccessful = false;
yulAssert(m_parserResult, "");
@ -231,10 +239,13 @@ YulStack::assembleEVMWithDeployed(optional<string_view> _deployName) const
evmasm::Assembly assembly(m_evmVersion, true, {});
EthAssemblyAdapter adapter(assembly);
// NOTE: We always need stack optimization when Yul optimizer is disabled. It being disabled
// just means that we don't use the full step sequence. We still run it with the minimal steps
// required to avoid "stack too deep".
bool optimize = m_optimiserSettings.optimizeStackAllocation || !m_optimiserSettings.runYulOptimiser;
// NOTE: We always need stack optimization when Yul optimizer is disabled (unless code contains
// msize). It being disabled just means that we don't use the full step sequence. We still run
// it with the minimal steps required to avoid "stack too deep".
bool optimize = m_optimiserSettings.optimizeStackAllocation || (
!m_optimiserSettings.runYulOptimiser &&
!yul::MSizeFinder::containsMSize(languageToDialect(m_language, m_evmVersion), *m_parserResult)
);
compileEVM(adapter, optimize);
assembly.optimise(evmasm::Assembly::OptimiserSettings::translateSettings(m_optimiserSettings, m_evmVersion));