llvm/lib/MCA/IncrementalSourceMgr.cpp

   1 //===-------------------- IncrementalSourceMgr.cpp ------------------------===//
   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 /// \file
  10 /// This file defines some implementations for IncrementalSourceMgr.
  11 ///
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/MCA/IncrementalSourceMgr.h"
  15 #ifndef NDEBUG
  16 #include "llvm/Support/Format.h"
  17 #endif
  18
  19 using namespace llvm;
  20 using namespace llvm::mca;
  21
  22 void IncrementalSourceMgr::clear() {
  23   Staging.clear();
  24   InstStorage.clear();
  25   TotalCounter = 0U;
  26   EOS = false;
  27 }
  28
  29 void IncrementalSourceMgr::updateNext() {
  30   ++TotalCounter;
  31   Instruction *I = Staging.front();
  32   Staging.pop_front();
  33   I->reset();
  34
  35   if (InstFreedCB)
  36     InstFreedCB(I);
  37 }
  38
  39 #ifndef NDEBUG
  40 void IncrementalSourceMgr::printStatistic(raw_ostream &OS) {
  41   unsigned MaxInstStorageSize = InstStorage.size();
  42   if (MaxInstStorageSize <= TotalCounter) {
  43     auto Ratio = double(MaxInstStorageSize) / double(TotalCounter);
  44     OS << "Cache ratio = " << MaxInstStorageSize << " / " << TotalCounter
  45        << llvm::format(" (%.2f%%)", (1.0 - Ratio) * 100.0) << "\n";
  46   } else {
  47     OS << "Error: Number of created instructions "
  48        << "are larger than the number of issued instructions\n";
  49   }
  50 }
  51 #endif