1 //===-------------- lib/Support/BranchProbability.cpp -----------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements Branch Probability class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Support/BranchProbability.h" 15 #include "llvm/Support/Debug.h" 16 #include "llvm/Support/raw_ostream.h" 17 18 using namespace llvm; 19 20 BranchProbability::BranchProbability(uint32_t n, uint32_t d) { 21 assert(d > 0 && "Denomiator cannot be 0!"); 22 assert(n <= d && "Probability cannot be bigger than 1!"); 23 N = n; 24 D = d; 25 } 26 27 raw_ostream &BranchProbability::print(raw_ostream &OS) const { 28 OS << N << " / " << D << " = " << ((double)N / D); 29 return OS; 30 } 31 32 void BranchProbability::dump() const { 33 print(dbgs()); 34 dbgs() << "\n"; 35 } 36 37 namespace llvm { 38 39 raw_ostream &operator<<(raw_ostream &OS, const BranchProbability &Prob) { 40 Prob.print(OS); 41 return OS; 42 } 43 44 } 45
