InstrProf.cpp revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
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
18using namespace llvm;
19
20namespace {
21class InstrProfErrorCategoryType : public error_category {
22  const char *name() const override { return "llvm.instrprof"; }
23  std::string message(int IE) const override {
24    instrprof_error::ErrorType E = static_cast<instrprof_error::ErrorType>(IE);
25    switch (E) {
26    case instrprof_error::success:
27      return "Success";
28    case instrprof_error::eof:
29      return "End of File";
30    case instrprof_error::bad_magic:
31      return "Invalid file format (bad magic)";
32    case instrprof_error::bad_header:
33      return "Invalid header";
34    case instrprof_error::unsupported_version:
35      return "Unsupported format version";
36    case instrprof_error::too_large:
37      return "Too much profile data";
38    case instrprof_error::truncated:
39      return "Truncated profile data";
40    case instrprof_error::malformed:
41      return "Malformed profile data";
42    case instrprof_error::unknown_function:
43      return "No profile data available for function";
44    case instrprof_error::hash_mismatch:
45      return "Function hash mismatch";
46    case instrprof_error::count_mismatch:
47      return "Function count mismatch";
48    case instrprof_error::counter_overflow:
49      return "Counter overflow";
50    }
51    llvm_unreachable("A value of instrprof_error has no message.");
52  }
53  error_condition default_error_condition(int EV) const {
54    if (EV == instrprof_error::success)
55      return errc::success;
56    return errc::invalid_argument;
57  }
58};
59}
60
61const error_category &llvm::instrprof_category() {
62  static InstrProfErrorCategoryType C;
63  return C;
64}
65