mirror of
https://github.com/revng/revng
synced 2026-06-21 14:07:57 +00:00
Alessandro Di Federico
2bd8c468bc
`empty-newpc` is a simple pass suppose to provide an empty body for the `newpc` function, allowing further optimization pass to take out all its calls.
30 lines
860 B
C++
30 lines
860 B
C++
/// \file EmptyNewPC.cpp
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/// \brief A simple pass to given an empty body to the `newpc` function so that
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/// it can be optimized away.
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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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// LLVM includes
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/Module.h"
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// Local libraries includes
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#include "revng/BasicAnalyses/EmptyNewPC.h"
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#include "revng/Support/IRHelpers.h"
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using namespace llvm;
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char EmptyNewPC::ID = 0;
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using Register = RegisterPass<EmptyNewPC>;
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static Register X("empty-newpc", "Create an empty newpc function", true, true);
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bool EmptyNewPC::runOnModule(llvm::Module &M) {
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LLVMContext &Context = getContext(&M);
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Function *NewPCFunction = M.getFunction("newpc");
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NewPCFunction->deleteBody();
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ReturnInst::Create(Context, BasicBlock::Create(Context, "", NewPCFunction));
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return false;
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}
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