LLVM 20.0.0git
SyntheticCountsUtils.h
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1//===- SyntheticCountsUtils.h - utilities for count propagation--*- 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//
9// This file defines utilities for synthetic counts propagation.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_ANALYSIS_SYNTHETICCOUNTSUTILS_H
14#define LLVM_ANALYSIS_SYNTHETICCOUNTSUTILS_H
15
19
20namespace llvm {
21
22/// Class with methods to propagate synthetic entry counts.
23///
24/// This class is templated on the type of the call graph and designed to work
25/// with the traditional per-module callgraph and the summary callgraphs used in
26/// ThinLTO. This contains only static methods and alias templates.
27template <typename CallGraphType> class SyntheticCountsUtils {
28public:
31 using NodeRef = typename CGT::NodeRef;
32 using EdgeRef = typename CGT::EdgeRef;
33 using SccTy = std::vector<NodeRef>;
34
35 // Not all EdgeRef have information about the source of the edge. Hence
36 // NodeRef corresponding to the source of the EdgeRef is explicitly passed.
40
41 static void propagate(const CallGraphType &CG, GetProfCountTy GetProfCount,
42 AddCountTy AddCount);
43
44private:
45 static void propagateFromSCC(const SccTy &SCC, GetProfCountTy GetProfCount,
46 AddCountTy AddCount);
47};
48} // namespace llvm
49
50#endif
This file provides interfaces used to build and manipulate a call graph, which is a very useful tool ...
Class with methods to propagate synthetic entry counts.
typename CGT::NodeRef NodeRef
std::vector< NodeRef > SccTy
typename CGT::EdgeRef EdgeRef
static void propagate(const CallGraphType &CG, GetProfCountTy GetProfCount, AddCountTy AddCount)
Propgate synthetic entry counts on a callgraph CG.
An efficient, type-erasing, non-owning reference to a callable.
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
typename GraphType::UnknownGraphTypeError NodeRef
Definition: GraphTraits.h:95