53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
//===- SyntheticCountsUtils.h - utilities for count propagation--*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines utilities for synthetic counts propagation.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_SYNTHETIC_COUNTS_UTILS_H
|
|
#define LLVM_ANALYSIS_SYNTHETIC_COUNTS_UTILS_H
|
|
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/Analysis/CallGraph.h"
|
|
#include "llvm/Support/ScaledNumber.h"
|
|
|
|
namespace llvm {
|
|
|
|
class CallGraph;
|
|
class Function;
|
|
|
|
/// Class with methods to propagate synthetic entry counts.
|
|
///
|
|
/// This class is templated on the type of the call graph and designed to work
|
|
/// with the traditional per-module callgraph and the summary callgraphs used in
|
|
/// ThinLTO. This contains only static methods and alias templates.
|
|
template <typename CallGraphType> class SyntheticCountsUtils {
|
|
public:
|
|
using Scaled64 = ScaledNumber<uint64_t>;
|
|
using CGT = GraphTraits<CallGraphType>;
|
|
using NodeRef = typename CGT::NodeRef;
|
|
using EdgeRef = typename CGT::EdgeRef;
|
|
using SccTy = std::vector<NodeRef>;
|
|
|
|
using GetRelBBFreqTy = function_ref<Optional<Scaled64>(EdgeRef)>;
|
|
using GetCountTy = function_ref<uint64_t(NodeRef)>;
|
|
using AddCountTy = function_ref<void(NodeRef, uint64_t)>;
|
|
|
|
static void propagate(const CallGraphType &CG, GetRelBBFreqTy GetRelBBFreq,
|
|
GetCountTy GetCount, AddCountTy AddCount);
|
|
|
|
private:
|
|
static void propagateFromSCC(const SccTy &SCC, GetRelBBFreqTy GetRelBBFreq,
|
|
GetCountTy GetCount, AddCountTy AddCount);
|
|
};
|
|
} // namespace llvm
|
|
|
|
#endif
|