| 1 | //===- CycleAnalysis.cpp - Compute CycleInfo for LLVM IR ------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "llvm/Analysis/CycleAnalysis.h" |
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| 10 | #include "llvm/ADT/GenericCycleImpl.h" |
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| 11 | #include "llvm/IR/CFG.h" // for successors found by ADL in GenericCycleImpl.h |
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| 12 | #include "llvm/InitializePasses.h" |
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| 13 | |
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| 14 | using namespace llvm; |
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| 15 | |
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| 16 | namespace llvm { |
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| 17 | class Module; |
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| 18 | } |
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| 19 | |
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| 20 | CycleInfo CycleAnalysis::run(Function &F, FunctionAnalysisManager &) { |
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| 21 | CycleInfo CI; |
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| 22 | CI.compute(F); |
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| 23 | return CI; |
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| 24 | } |
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| 25 | |
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| 26 | AnalysisKey CycleAnalysis::Key; |
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| 27 | |
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| 28 | CycleInfoPrinterPass::CycleInfoPrinterPass(raw_ostream &OS) : OS(OS) {} |
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| 29 | |
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| 30 | PreservedAnalyses CycleInfoPrinterPass::run(Function &F, |
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| 31 | FunctionAnalysisManager &AM) { |
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| 32 | OS << "CycleInfo for function: " << F.getName() << "\n" ; |
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| 33 | AM.getResult<CycleAnalysis>(IR&: F).print(Out&: OS); |
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| 34 | |
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| 35 | return PreservedAnalyses::all(); |
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| 36 | } |
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| 37 | |
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| 38 | //===----------------------------------------------------------------------===// |
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| 39 | // CycleInfoWrapperPass Implementation |
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| 40 | //===----------------------------------------------------------------------===// |
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| 41 | // |
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| 42 | // The implementation details of the wrapper pass that holds a CycleInfo |
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| 43 | // suitable for use with the legacy pass manager. |
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| 44 | // |
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| 45 | //===----------------------------------------------------------------------===// |
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| 46 | |
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| 47 | char CycleInfoWrapperPass::ID = 0; |
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| 48 | |
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| 49 | CycleInfoWrapperPass::CycleInfoWrapperPass() : FunctionPass(ID) { |
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| 50 | initializeCycleInfoWrapperPassPass(*PassRegistry::getPassRegistry()); |
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| 51 | } |
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| 52 | |
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| 53 | INITIALIZE_PASS_BEGIN(CycleInfoWrapperPass, "cycles" , "Cycle Info Analysis" , |
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| 54 | true, true) |
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| 55 | INITIALIZE_PASS_END(CycleInfoWrapperPass, "cycles" , "Cycle Info Analysis" , true, |
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| 56 | true) |
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| 57 | |
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| 58 | void CycleInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const { |
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| 59 | AU.setPreservesAll(); |
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| 60 | } |
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| 61 | |
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| 62 | bool CycleInfoWrapperPass::runOnFunction(Function &Func) { |
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| 63 | CI.clear(); |
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| 64 | |
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| 65 | F = &Func; |
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| 66 | CI.compute(F&: Func); |
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| 67 | return false; |
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| 68 | } |
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| 69 | |
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| 70 | void CycleInfoWrapperPass::print(raw_ostream &OS, const Module *) const { |
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| 71 | OS << "CycleInfo for function: " << F->getName() << "\n" ; |
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| 72 | CI.print(Out&: OS); |
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| 73 | } |
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| 74 | |
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| 75 | void CycleInfoWrapperPass::releaseMemory() { |
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| 76 | CI.clear(); |
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| 77 | F = nullptr; |
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| 78 | } |
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| 79 | |
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