InstrProf.cpp revision 288943 
1//=-- InstrProf.cpp - Instrumented profiling format support -----------------=//
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// This file contains support for clang's instrumentation based PGO and
11// coverage.
12//
13//===----------------------------------------------------------------------===//
14
15#include "llvm/ProfileData/InstrProf.h"
16#include "llvm/Support/ErrorHandling.h"
17#include "llvm/Support/ManagedStatic.h"
18
19using namespace llvm;
20
21namespace {
22class InstrProfErrorCategoryType : public std::error_category {
23  const char *name() const LLVM_NOEXCEPT override { return "llvm.instrprof"; }
24  std::string message(int IE) const override {
25    instrprof_error E = static_cast<instrprof_error>(IE);
26    switch (E) {
27    case instrprof_error::success:
28      return "Success";
29    case instrprof_error::eof:
30      return "End of File";
31    case instrprof_error::bad_magic:
32      return "Invalid profile data (bad magic)";
33    case instrprof_error::bad_header:
34      return "Invalid profile data (file header is corrupt)";
35    case instrprof_error::unsupported_version:
36      return "Unsupported profiling format version";
37    case instrprof_error::unsupported_hash_type:
38      return "Unsupported profiling hash";
39    case instrprof_error::too_large:
40      return "Too much profile data";
41    case instrprof_error::truncated:
42      return "Truncated profile data";
43    case instrprof_error::malformed:
44      return "Malformed profile data";
45    case instrprof_error::unknown_function:
46      return "No profile data available for function";
47    case instrprof_error::hash_mismatch:
48      return "Function hash mismatch";
49    case instrprof_error::count_mismatch:
50      return "Function count mismatch";
51    case instrprof_error::counter_overflow:
52      return "Counter overflow";
53    }
54    llvm_unreachable("A value of instrprof_error has no message.");
55  }
56};
57}
58
59static ManagedStatic<InstrProfErrorCategoryType> ErrorCategory;
60
61const std::error_category &llvm::instrprof_category() {
62  return *ErrorCategory;
63}
64