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Compatibility with StackCompressor and StackLimitEvader.

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This commit is contained in:
Daniel Kirchner
2021-11-03 12:39:55 +01:00
parent b2c9b69de2
commit 4229369180
5 changed files with 193 additions and 41 deletions
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libyul/optimiser/StackLimitEvader.cpp
+43
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@@ -21,14 +21,18 @@
#include <libyul/optimiser/FunctionDefinitionCollector.h>
#include <libyul/optimiser/NameDispenser.h>
#include <libyul/optimiser/StackToMemoryMover.h>
#include <libyul/backends/evm/ControlFlowGraphBuilder.h>
#include <libyul/backends/evm/EVMDialect.h>
#include <libyul/AsmAnalysis.h>
#include <libyul/AST.h>
#include <libyul/CompilabilityChecker.h>
#include <libyul/Exceptions.h>
#include <libyul/Object.h>
#include <libyul/Utilities.h>
#include <libsolutil/Algorithms.h>
#include <libsolutil/CommonData.h>
#include <range/v3/range/conversion.hpp>
#include <range/v3/view/concat.hpp>
#include <range/v3/view/take.hpp>
@@ -114,6 +118,45 @@ u256 literalArgumentValue(FunctionCall const& _call)
}
}
void StackLimitEvader::run(
OptimiserStepContext& _context,
Object& _object
)
{
auto const* evmDialect = dynamic_cast<EVMDialect const*>(&_context.dialect);
yulAssert(
evmDialect && evmDialect->providesObjectAccess(),
"StackLimitEvader can only be run on objects using the EVMDialect with object access."
);
if (evmDialect && evmDialect->evmVersion().canOverchargeGasForCall())
{
yul::AsmAnalysisInfo analysisInfo = yul::AsmAnalyzer::analyzeStrictAssertCorrect(*evmDialect, _object);
unique_ptr<CFG> cfg = ControlFlowGraphBuilder::build(analysisInfo, *evmDialect, *_object.code);
run(_context, _object, StackLayoutGenerator::reportStackTooDeep(*cfg));
}
else
run(_context, _object, CompilabilityChecker{
_context.dialect,
_object,
true
}.unreachableVariables);
}
void StackLimitEvader::run(
OptimiserStepContext& _context,
Object& _object,
map<YulString, vector<StackLayoutGenerator::StackTooDeep>> const& _stackTooDeepErrors
)
{
map<YulString, set<YulString>> unreachableVariables;
for (auto&& [function, stackTooDeepErrors]: _stackTooDeepErrors)
// TODO: choose wisely.
for (auto const& stackTooDeepError: stackTooDeepErrors)
unreachableVariables[function] += stackTooDeepError.variableChoices | ranges::views::take(stackTooDeepError.deficit) | ranges::to<set<YulString>>;
run(_context, _object, unreachableVariables);
}
void StackLimitEvader::run(
OptimiserStepContext& _context,
Object& _object,