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 
19 using namespace llvm;
20 
21 namespace {
22 class InstrProfErrorCategoryType : public std::error_category {
name() const23   const char *name() const LLVM_NOEXCEPT override { return "llvm.instrprof"; }
message(int IE) const24   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 file format (bad magic)";
33     case instrprof_error::bad_header:
34       return "Invalid header";
35     case instrprof_error::unsupported_version:
36       return "Unsupported format version";
37     case instrprof_error::unsupported_hash_type:
38       return "Unsupported hash function";
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 
59 static ManagedStatic<InstrProfErrorCategoryType> ErrorCategory;
60 
instrprof_category()61 const std::error_category &llvm::instrprof_category() {
62   return *ErrorCategory;
63 }
64