mirror of
https://github.com/revng/revng
synced 2026-06-21 14:07:57 +00:00
Alessandro Di Federico
2e241acae3
This commit drops the old FunctionBoundariesDetectionPass and introduces a new one based on the results provided by the StackAnalysis. A very similar pass, the ABIDetectionPass, is now available to offer the results of the ABI analysis too. These two new passes are a thin shim depending on the appropriate version of the StackAnalysis (with or withour ABI anlysis) and simply call `serializeMetadata`, which decorates the LLVM IR with the requested information. In addition to drop the old analysis, this commit also isolates the function boundaries detection pass from `revamb` making it available as a library only.
70 lines
1.6 KiB
C++
70 lines
1.6 KiB
C++
#ifndef STACKANALYSIS_H
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#define STACKANALYSIS_H
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//
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// This file is distributed under the MIT License. See LICENSE.md for details.
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//
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// Standard includes
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#include <string>
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// LLVM includes
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#include "llvm/Pass.h"
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// Local libraries includes
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#include "revng/BasicAnalyses/GeneratedCodeBasicInfo.h"
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#include "revng/FunctionCallIdentification/FunctionCallIdentification.h"
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#include "revng/StackAnalysis/FunctionsSummary.h"
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namespace StackAnalysis {
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extern const std::set<llvm::GlobalVariable *> EmptyCSVSet;
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template<bool AnalyzeABI>
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class StackAnalysis : public llvm::ModulePass {
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friend class FunctionBoundariesDetectionPass;
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public:
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static char ID;
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public:
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StackAnalysis() : llvm::ModulePass(ID) {}
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void getAnalysisUsage(llvm::AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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AU.addRequired<GeneratedCodeBasicInfo>();
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}
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bool runOnModule(llvm::Module &M) override;
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const std::set<llvm::GlobalVariable *> &
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getClobbered(llvm::BasicBlock *Function) const {
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auto It = GrandResult.Functions.find(Function);
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if (It == GrandResult.Functions.end())
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return EmptyCSVSet;
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else
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return It->second.ClobberedRegisters;
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}
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void serialize(std::ostream &Output) { Output << TextRepresentation; }
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void serializeMetadata(llvm::Function &F);
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public:
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FunctionsSummary GrandResult;
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std::string TextRepresentation;
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};
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template<>
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char StackAnalysis<true>::ID;
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template<>
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char StackAnalysis<false>::ID;
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extern template void StackAnalysis<true>::serializeMetadata(llvm::Function &F);
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extern template void StackAnalysis<false>::serializeMetadata(llvm::Function &F);
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} // namespace StackAnalysis
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#endif // STACKANALYSIS_H
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