c4c9d99377
Add a custom invalidator that makes sure CycleAnalysis is preserved if the CFGAnalyses set is preserved. The implementation matches that of LoopInfo.
92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
//===- CycleAnalysis.cpp - Compute CycleInfo for LLVM IR ------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/CycleAnalysis.h"
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#include "llvm/IR/CFG.h" // for successors found by ADL in GenericCycleImpl.h
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#include "llvm/InitializePasses.h"
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using namespace llvm;
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namespace llvm {
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class Module;
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} // namespace llvm
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CycleInfo CycleAnalysis::run(Function &F, FunctionAnalysisManager &) {
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CycleInfo CI;
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CI.compute(F);
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return CI;
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}
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bool CycleAnalysis::invalidate(Function &F, const PreservedAnalyses &PA,
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FunctionAnalysisManager::Invalidator &) {
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// Check whether the analysis, all analyses on functions, or the function's
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// CFG have been preserved.
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auto PAC = PA.getChecker<CycleAnalysis>();
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return !(PAC.preserved() || PAC.preservedSet<AllAnalysesOn<Function>>() ||
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PAC.preservedSet<CFGAnalyses>());
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}
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AnalysisKey CycleAnalysis::Key;
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CycleInfoPrinterPass::CycleInfoPrinterPass(raw_ostream &OS) : OS(OS) {}
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PreservedAnalyses CycleInfoPrinterPass::run(Function &F,
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FunctionAnalysisManager &AM) {
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OS << "CycleInfo for function: " << F.getName() << "\n";
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AM.getResult<CycleAnalysis>(F).print(OS);
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return PreservedAnalyses::all();
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}
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PreservedAnalyses CycleInfoVerifierPass::run(Function &F,
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FunctionAnalysisManager &AM) {
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CycleInfo &CI = AM.getResult<CycleAnalysis>(F);
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CI.verify();
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return PreservedAnalyses::all();
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}
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//===----------------------------------------------------------------------===//
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// CycleInfoWrapperPass Implementation
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//===----------------------------------------------------------------------===//
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//
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// The implementation details of the wrapper pass that holds a CycleInfo
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// suitable for use with the legacy pass manager.
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//
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//===----------------------------------------------------------------------===//
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char CycleInfoWrapperPass::ID = 0;
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CycleInfoWrapperPass::CycleInfoWrapperPass() : FunctionPass(ID) {}
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INITIALIZE_PASS_BEGIN(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis",
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true, true)
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INITIALIZE_PASS_END(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis", true,
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true)
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void CycleInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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bool CycleInfoWrapperPass::runOnFunction(Function &Func) {
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CI.clear();
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F = &Func;
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CI.compute(Func);
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return false;
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}
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void CycleInfoWrapperPass::print(raw_ostream &OS, const Module *) const {
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OS << "CycleInfo for function: " << F->getName() << "\n";
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CI.print(OS);
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}
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void CycleInfoWrapperPass::releaseMemory() {
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CI.clear();
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F = nullptr;
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}
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