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To be removed: do not force enable yul optimizer, but run stack limit evader in presence of inline assembly.

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This commit is contained in:
Daniel Kirchner 2020-10-06 22:18:53 +02:00
parent 3a5cbf248e
commit bda2033dc4
2 changed files with 15 additions and 33 deletions
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6
libsolidity/codegen/ir/IRGenerator.cpp
View File

@ -659,16 +659,14 @@ string IRGenerator::dispatchRoutine(ContractDefinition const& _contract)
return t.render();
}
string IRGenerator::memoryInit(bool _useMemoryGuard)
string IRGenerator::memoryInit(bool)
{
// This function should be called at the beginning of the EVM call frame
// and thus can assume all memory to be zero, including the contents of
// the "zero memory area" (the position CompilerUtils::zeroPointer points to).
return
Whiskers{
_useMemoryGuard ?
"mstore(<memPtr>, memoryguard(<freeMemoryStart>))" :
"mstore(<memPtr>, <freeMemoryStart>)"
"mstore(<memPtr>, memoryguard(<freeMemoryStart>))"
}
("memPtr", to_string(CompilerUtils::freeMemoryPointer))
(

42
test/libsolidity/SolidityExecutionFramework.cpp
View File

@ -74,37 +74,21 @@ bytes SolidityExecutionFramework::multiSourceCompileContract(
obj = m_compiler.ewasmObject(contractName);
else
{
// Try compiling twice: If the first run fails due to stack errors, forcefully enable
// the optimizer.
for (bool forceEnableOptimizer: {false, true})
OptimiserSettings optimiserSettings = m_optimiserSettings;
if (!optimiserSettings.runYulOptimiser)
{
OptimiserSettings optimiserSettings = m_optimiserSettings;
if (!forceEnableOptimizer && !optimiserSettings.runYulOptimiser)
{
// Enable some optimizations on the first run
optimiserSettings.runYulOptimiser = true;
optimiserSettings.yulOptimiserSteps = "uljmul jmul";
}
else if (forceEnableOptimizer)
optimiserSettings = OptimiserSettings::full();
yul::AssemblyStack
asmStack(m_evmVersion, yul::AssemblyStack::Language::StrictAssembly, optimiserSettings);
bool analysisSuccessful = asmStack.parseAndAnalyze("", m_compiler.yulIROptimized(contractName));
solAssert(analysisSuccessful, "Code that passed analysis in CompilerStack can't have errors");
try
{
asmStack.optimize();
obj = std::move(*asmStack.assemble(yul::AssemblyStack::Machine::EVM).bytecode);
break;
}
catch (...)
{
if (forceEnableOptimizer || optimiserSettings == OptimiserSettings::full())
throw;
}
// Enable some optimizations on the first run
optimiserSettings.runYulOptimiser = true;
optimiserSettings.yulOptimiserSteps = "uljmul jmul";
}
yul::AssemblyStack
asmStack(m_evmVersion, yul::AssemblyStack::Language::StrictAssembly, optimiserSettings);
bool analysisSuccessful = asmStack.parseAndAnalyze("", m_compiler.yulIROptimized(contractName));
solAssert(analysisSuccessful, "Code that passed analysis in CompilerStack can't have errors");
asmStack.optimize();
obj = std::move(*asmStack.assemble(yul::AssemblyStack::Machine::EVM).bytecode);
}
}
else