1//===- CycleAnalysis.cpp - Compute CycleInfo for LLVM IR ------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/Analysis/CycleAnalysis.h"
10#include "llvm/IR/CFG.h" // for successors found by ADL in GenericCycleImpl.h
11#include "llvm/InitializePasses.h"
12
13using namespace llvm;
14
15namespace llvm {
16class Module;
17} // namespace llvm
18
19CycleInfo CycleAnalysis::run(Function &F, FunctionAnalysisManager &) {
20 CycleInfo CI;
21 CI.compute(F);
22 return CI;
23}
24
25AnalysisKey CycleAnalysis::Key;
26
27CycleInfoPrinterPass::CycleInfoPrinterPass(raw_ostream &OS) : OS(OS) {}
28
29PreservedAnalyses CycleInfoPrinterPass::run(Function &F,
30 FunctionAnalysisManager &AM) {
31 OS << "CycleInfo for function: " << F.getName() << "\n";
32 AM.getResult<CycleAnalysis>(IR&: F).print(Out&: OS);
33
34 return PreservedAnalyses::all();
35}
36
37PreservedAnalyses CycleInfoVerifierPass::run(Function &F,
38 FunctionAnalysisManager &AM) {
39 CycleInfo &CI = AM.getResult<CycleAnalysis>(IR&: F);
40 CI.verify();
41 return PreservedAnalyses::all();
42}
43
44//===----------------------------------------------------------------------===//
45// CycleInfoWrapperPass Implementation
46//===----------------------------------------------------------------------===//
47//
48// The implementation details of the wrapper pass that holds a CycleInfo
49// suitable for use with the legacy pass manager.
50//
51//===----------------------------------------------------------------------===//
52
53char CycleInfoWrapperPass::ID = 0;
54
55CycleInfoWrapperPass::CycleInfoWrapperPass() : FunctionPass(ID) {}
56
57INITIALIZE_PASS_BEGIN(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis",
58 true, true)
59INITIALIZE_PASS_END(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis", true,
60 true)
61
62void CycleInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
63 AU.setPreservesAll();
64}
65
66bool CycleInfoWrapperPass::runOnFunction(Function &Func) {
67 CI.clear();
68
69 F = &Func;
70 CI.compute(F&: Func);
71 return false;
72}
73
74void CycleInfoWrapperPass::print(raw_ostream &OS, const Module *) const {
75 OS << "CycleInfo for function: " << F->getName() << "\n";
76 CI.print(Out&: OS);
77}
78
79void CycleInfoWrapperPass::releaseMemory() {
80 CI.clear();
81 F = nullptr;
82}
83