1*fe013be4SDimitry Andric //===- CountVisits.cpp ----------------------------------------------------===//
2*fe013be4SDimitry Andric //
3*fe013be4SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*fe013be4SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
5*fe013be4SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*fe013be4SDimitry Andric //
7*fe013be4SDimitry Andric //===----------------------------------------------------------------------===//
8*fe013be4SDimitry Andric 
9*fe013be4SDimitry Andric #include "llvm/Transforms/Utils/CountVisits.h"
10*fe013be4SDimitry Andric #include "llvm/ADT/Statistic.h"
11*fe013be4SDimitry Andric #include "llvm/IR/PassManager.h"
12*fe013be4SDimitry Andric 
13*fe013be4SDimitry Andric using namespace llvm;
14*fe013be4SDimitry Andric 
15*fe013be4SDimitry Andric #define DEBUG_TYPE "count-visits"
16*fe013be4SDimitry Andric 
17*fe013be4SDimitry Andric STATISTIC(MaxVisited, "Max number of times we visited a function");
18*fe013be4SDimitry Andric 
run(Function & F,FunctionAnalysisManager &)19*fe013be4SDimitry Andric PreservedAnalyses CountVisitsPass::run(Function &F, FunctionAnalysisManager &) {
20*fe013be4SDimitry Andric   uint32_t Count = Counts[F.getName()] + 1;
21*fe013be4SDimitry Andric   Counts[F.getName()] = Count;
22*fe013be4SDimitry Andric   if (Count > MaxVisited)
23*fe013be4SDimitry Andric     MaxVisited = Count;
24*fe013be4SDimitry Andric   return PreservedAnalyses::all();
25*fe013be4SDimitry Andric }
26