1 //===- ProfileCommon.h - Common profiling APIs. -----------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains data structures and functions common to both instrumented
11 // and sample profiling.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_PROFILEDATA_PROFILECOMMON_H
16 #define LLVM_PROFILEDATA_PROFILECOMMON_H
18 #include "llvm/ADT/ArrayRef.h"
19 #include "llvm/IR/ProfileSummary.h"
20 #include "llvm/ProfileData/InstrProf.h"
21 #include "llvm/Support/Error.h"
31 namespace sampleprof {
33 class FunctionSamples;
35 } // end namespace sampleprof
37 inline const char *getHotSectionPrefix() { return ".hot"; }
38 inline const char *getUnlikelySectionPrefix() { return ".unlikely"; }
40 class ProfileSummaryBuilder {
42 /// We keep track of the number of times a count (block count or samples)
43 /// appears in the profile. The map is kept sorted in the descending order of
45 std::map<uint64_t, uint32_t, std::greater<uint64_t>> CountFrequencies;
46 std::vector<uint32_t> DetailedSummaryCutoffs;
49 SummaryEntryVector DetailedSummary;
50 uint64_t TotalCount = 0;
51 uint64_t MaxCount = 0;
52 uint64_t MaxFunctionCount = 0;
53 uint32_t NumCounts = 0;
54 uint32_t NumFunctions = 0;
56 ProfileSummaryBuilder(std::vector<uint32_t> Cutoffs)
57 : DetailedSummaryCutoffs(std::move(Cutoffs)) {}
58 ~ProfileSummaryBuilder() = default;
60 inline void addCount(uint64_t Count);
61 void computeDetailedSummary();
64 /// A vector of useful cutoff values for detailed summary.
65 static const ArrayRef<uint32_t> DefaultCutoffs;
68 class InstrProfSummaryBuilder final : public ProfileSummaryBuilder {
69 uint64_t MaxInternalBlockCount = 0;
71 inline void addEntryCount(uint64_t Count);
72 inline void addInternalCount(uint64_t Count);
75 InstrProfSummaryBuilder(std::vector<uint32_t> Cutoffs)
76 : ProfileSummaryBuilder(std::move(Cutoffs)) {}
78 void addRecord(const InstrProfRecord &);
79 std::unique_ptr<ProfileSummary> getSummary();
82 class SampleProfileSummaryBuilder final : public ProfileSummaryBuilder {
84 SampleProfileSummaryBuilder(std::vector<uint32_t> Cutoffs)
85 : ProfileSummaryBuilder(std::move(Cutoffs)) {}
87 void addRecord(const sampleprof::FunctionSamples &FS);
88 std::unique_ptr<ProfileSummary> getSummary();
91 /// This is called when a count is seen in the profile.
92 void ProfileSummaryBuilder::addCount(uint64_t Count) {
97 CountFrequencies[Count]++;
100 } // end namespace llvm
102 #endif // LLVM_PROFILEDATA_PROFILECOMMON_H