1//===- SanitizerStats.h - Sanitizer statistics gathering  -------*- 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// Declares functions and data structures for sanitizer statistics gathering.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_TRANSFORMS_UTILS_SANITIZERSTATS_H
15#define LLVM_TRANSFORMS_UTILS_SANITIZERSTATS_H
16
17#include "llvm/IR/IRBuilder.h"
18
19namespace llvm {
20
21// Number of bits in data that are used for the sanitizer kind. Needs to match
22// __sanitizer::kKindBits in compiler-rt/lib/stats/stats.h
23enum { kSanitizerStatKindBits = 3 };
24
25enum SanitizerStatKind {
26  SanStat_CFI_VCall,
27  SanStat_CFI_NVCall,
28  SanStat_CFI_DerivedCast,
29  SanStat_CFI_UnrelatedCast,
30  SanStat_CFI_ICall,
31};
32
33struct SanitizerStatReport {
34  SanitizerStatReport(Module *M);
35
36  /// Generates code into B that increments a location-specific counter tagged
37  /// with the given sanitizer kind SK.
38  void create(IRBuilder<> &B, SanitizerStatKind SK);
39
40  /// Finalize module stats array and add global constructor to register it.
41  void finish();
42
43private:
44  Module *M;
45  GlobalVariable *ModuleStatsGV;
46  ArrayType *StatTy;
47  StructType *EmptyModuleStatsTy;
48
49  std::vector<Constant *> Inits;
50  ArrayType *makeModuleStatsArrayTy();
51  StructType *makeModuleStatsTy();
52};
53
54}
55
56#endif
57