1 //===--------------------- RetireControlUnitStatistics.h --------*- C++ -*-===// 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 /// \file 9 /// 10 /// This file defines class RetireControlUnitStatistics: a view that knows how 11 /// to print general statistics related to the retire control unit. 12 /// 13 /// Example: 14 /// ======== 15 /// 16 /// Retire Control Unit - number of cycles where we saw N instructions retired: 17 /// [# retired], [# cycles] 18 /// 0, 109 (17.9%) 19 /// 1, 102 (16.7%) 20 /// 2, 399 (65.4%) 21 /// 22 /// Total ROB Entries: 64 23 /// Max Used ROB Entries: 35 ( 54.7% ) 24 /// Average Used ROB Entries per cy: 32 ( 50.0% ) 25 /// 26 //===----------------------------------------------------------------------===// 27 28 #ifndef LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H 29 #define LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H 30 31 #include "Views/View.h" 32 #include "llvm/MC/MCSchedule.h" 33 #include <map> 34 35 namespace llvm { 36 namespace mca { 37 38 class RetireControlUnitStatistics : public View { 39 using Histogram = std::map<unsigned, unsigned>; 40 Histogram RetiredPerCycle; 41 42 unsigned NumRetired; 43 unsigned NumCycles; 44 unsigned TotalROBEntries; 45 unsigned EntriesInUse; 46 unsigned MaxUsedEntries; 47 unsigned SumOfUsedEntries; 48 49 public: 50 RetireControlUnitStatistics(const MCSchedModel &SM); 51 52 void onEvent(const HWInstructionEvent &Event) override; 53 void onCycleEnd() override; 54 void printView(llvm::raw_ostream &OS) const override; 55 StringRef getNameAsString() const override { 56 return "RetireControlUnitStatistics"; 57 } 58 }; 59 60 } // namespace mca 61 } // namespace llvm 62 63 #endif 64