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//===- CycleAnalysis.cpp - Compute CycleInfo for LLVM IR ------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CycleAnalysis.h"
#include "llvm/ADT/GenericCycleImpl.h"
#include "llvm/IR/CFG.h"
#include "llvm/InitializePasses.h"
using namespace llvm;
template class llvm::GenericCycleInfo<SSAContext>;
template class llvm::GenericCycle<SSAContext>;
CycleInfo CycleAnalysis::run(Function &F, FunctionAnalysisManager &) {
CycleInfo CI;
CI.compute(F);
return CI;
}
AnalysisKey CycleAnalysis::Key;
CycleInfoPrinterPass::CycleInfoPrinterPass(raw_ostream &OS) : OS(OS) {}
PreservedAnalyses CycleInfoPrinterPass::run(Function &F,
FunctionAnalysisManager &AM) {
OS << "CycleInfo for function: " << F.getName() << "\n";
AM.getResult<CycleAnalysis>(F).print(OS);
return PreservedAnalyses::all();
}
//===----------------------------------------------------------------------===//
// CycleInfoWrapperPass Implementation
//===----------------------------------------------------------------------===//
//
// The implementation details of the wrapper pass that holds a CycleInfo
// suitable for use with the legacy pass manager.
//
//===----------------------------------------------------------------------===//
char CycleInfoWrapperPass::ID = 0;
CycleInfoWrapperPass::CycleInfoWrapperPass() : FunctionPass(ID) {
initializeCycleInfoWrapperPassPass(*PassRegistry::getPassRegistry());
}
INITIALIZE_PASS_BEGIN(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis",
true, true)
INITIALIZE_PASS_END(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis", true,
true)
void CycleInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
bool CycleInfoWrapperPass::runOnFunction(Function &Func) {
CI.clear();
F = &Func;
CI.compute(Func);
return false;
}
void CycleInfoWrapperPass::print(raw_ostream &OS, const Module *) const {
OS << "CycleInfo for function: " << F->getName() << "\n";
CI.print(OS);
}
void CycleInfoWrapperPass::releaseMemory() {
CI.clear();
F = nullptr;
}
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