[libFuzzer] remove the experimental support for clang coverage instrumentation. This mode has not been used and our experiments with https://github.com/google/fuzzer-test-suite show that this signal is weaker than the SanitizerCoverage

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@332034 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 16 deletions

diff --git a/lib/fuzzer/FuzzerTracePC.h b/lib/fuzzer/FuzzerTracePC.h
index c3f241b90..0cf4e7248 100644
--- a/lib/fuzzer/FuzzerTracePC.h
+++ b/lib/fuzzer/FuzzerTracePC.h
@@ -80,7 +80,6 @@ class TracePC {
   template <class T> void HandleCmp(uintptr_t PC, T Arg1, T Arg2);
   size_t GetTotalPCCoverage();
   void SetUseCounters(bool UC) { UseCounters = UC; }
-  void SetUseClangCoverage(bool UCC) { UseClangCoverage = UCC; }
   void SetUseValueProfile(bool VP) { UseValueProfile = VP; }
   void SetPrintNewPCs(bool P) { DoPrintNewPCs = P; }
   void SetPrintNewFuncs(size_t P) { NumPrintNewFuncs = P; }
@@ -93,8 +92,6 @@ class TracePC {
       memset(Counters(), 0, GetNumPCs());
     ClearExtraCounters();
     ClearInlineCounters();
-    if (UseClangCoverage)
-      ClearClangCounters();
   }
 
   void ClearInlineCounters();
@@ -135,7 +132,6 @@ class TracePC {
 private:
   bool UseCounters = false;
   bool UseValueProfile = false;
-  bool UseClangCoverage = false;
   bool DoPrintNewPCs = false;
   size_t NumPrintNewFuncs = 0;
 
@@ -251,18 +247,6 @@ void TracePC::CollectFeatures(Callback HandleFeature) const {
     }
   }
 
-  if (size_t NumClangCounters = ClangCountersEnd() - ClangCountersBegin()) {
-    auto P = ClangCountersBegin();
-    for (size_t Idx = 0; Idx < NumClangCounters; Idx++)
-      if (auto Cnt = P[Idx]) {
-        if (UseCounters)
-          HandleFeature(FirstFeature + Idx * 8 + CounterToFeature(Cnt));
-        else
-          HandleFeature(FirstFeature + Idx);
-      }
-    FirstFeature += NumClangCounters;
-  }
-
   ForEachNonZeroByte(ExtraCountersBegin(), ExtraCountersEnd(), FirstFeature,
                      Handle8bitCounter);
   FirstFeature += (ExtraCountersEnd() - ExtraCountersBegin()) * 8;