src/llvm/lib/ProfileData/SampleProf.cpp

   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 {
  23   const char *name() const LLVM_NOEXCEPT override { return "llvm.sampleprof"; }
  24   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
  49 const std::error_category &llvm::sampleprof_category() {
  50   return *ErrorCategory;
  51 }