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f289df2d95
Patch by: Jakub Staszak! Introduces BranchProbability. Changes unsigned to uint32_t all over and uint64_t only when overflow is expected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132867 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
//===-------------- lib/Support/BranchProbability.cpp -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements Branch Probability class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/BranchProbability.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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BranchProbability::BranchProbability(uint32_t n, uint32_t d) {
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assert(d > 0 && "Denomiator cannot be 0!");
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assert(n <= d && "Probability cannot be bigger than 1!");
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N = n;
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D = d;
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}
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raw_ostream &BranchProbability::print(raw_ostream &OS) const {
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OS << N << " / " << D << " = " << ((double)N / D);
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return OS;
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}
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void BranchProbability::dump() const {
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print(dbgs());
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dbgs() << "\n";
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}
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namespace llvm {
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raw_ostream &operator<<(raw_ostream &OS, const BranchProbability &Prob) {
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Prob.print(OS);
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return OS;
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}
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}
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