1 //=-- SampleProf.cpp - Sample 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 common definitions used in the reading and writing of
11 // sample profile data.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "llvm/ProfileData/SampleProf.h"
16 #include "llvm/Support/ErrorHandling.h"
17 #include "llvm/Support/ManagedStatic.h"
18 
19 using namespace llvm;
20 
21 namespace {
22 class SampleProfErrorCategoryType : public std::error_category {
name() const23   const char *name() const LLVM_NOEXCEPT override { return "llvm.sampleprof"; }
message(int IE) const24   std::string message(int IE) const override {
25     sampleprof_error E = static_cast<sampleprof_error>(IE);
26     switch (E) {
27     case sampleprof_error::success:
28       return "Success";
29     case sampleprof_error::bad_magic:
30       return "Invalid file format (bad magic)";
31     case sampleprof_error::unsupported_version:
32       return "Unsupported format version";
33     case sampleprof_error::too_large:
34       return "Too much profile data";
35     case sampleprof_error::truncated:
36       return "Truncated profile data";
37     case sampleprof_error::malformed:
38       return "Malformed profile data";
39     case sampleprof_error::unrecognized_format:
40       return "Unrecognized profile encoding format";
41     }
42     llvm_unreachable("A value of sampleprof_error has no message.");
43   }
44 };
45 }
46 
47 static ManagedStatic<SampleProfErrorCategoryType> ErrorCategory;
48 
sampleprof_category()49 const std::error_category &llvm::sampleprof_category() {
50   return *ErrorCategory;
51 }
52