llvm/tools/llvm-exegesis/lib/ValidationEvent.cpp

   1
   2 #include "ValidationEvent.h"
   3 #include "llvm/ADT/StringRef.h"
   4 #include "llvm/Support/Errc.h"
   5 #include "llvm/Support/Error.h"
   6
   7 namespace llvm {
   8 namespace exegesis {
   9
  10 namespace {
  11
  12 struct ValidationEventInfo {
  13   const char *const Name;
  14   const char *const Description;
  15 };
  16
  17 // Information about validation events, indexed by `ValidationEvent` enum
  18 // value.
  19 static constexpr ValidationEventInfo ValidationEventInfos[] = {
  20     {"instructions-retired", "Count retired instructions"},
  21     {"l1d-cache-load-misses", "Count L1D load cache misses"},
  22     {"l1d-cache-store-misses", "Count L1D store cache misses"},
  23     {"l1i-cache-load-misses", "Count L1I load cache misses"},
  24     {"data-tlb-load-misses", "Count DTLB load misses"},
  25     {"data-tlb-store-misses", "Count DTLB store misses"},
  26     {"instruction-tlb-load-misses", "Count ITLB load misses"},
  27     {"branch-prediction-misses", "Branch prediction misses"},
  28 };
  29
  30 static_assert(sizeof(ValidationEventInfos) ==
  31                   NumValidationEvents * sizeof(ValidationEventInfo),
  32               "please update ValidationEventInfos");
  33
  34 } // namespace
  35
  36 const char *getValidationEventName(ValidationEvent VE) {
  37   return ValidationEventInfos[VE].Name;
  38 }
  39 const char *getValidationEventDescription(ValidationEvent VE) {
  40   return ValidationEventInfos[VE].Description;
  41 }
  42
  43 Expected<ValidationEvent> getValidationEventByName(StringRef Name) {
  44   int VE = 0;
  45   for (const ValidationEventInfo &Info : ValidationEventInfos) {
  46     if (Name == Info.Name)
  47       return static_cast<ValidationEvent>(VE);
  48     ++VE;
  49   }
  50
  51   return make_error<StringError>("Invalid validation event string",
  52                                  errc::invalid_argument);
  53 }
  54
  55 } // namespace exegesis
  56 } // namespace llvm