[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

llvm-svn: 332034

1 files changed, 0 insertions, 10 deletions

diff --git a/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp b/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp
index 701ef087319..f8c193ef57e 100644
--- a/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerTracePC.cpp
@@ -132,9 +132,6 @@ void TracePC::PrintModuleInfo() {
       _Exit(1);
     }
   }
-  if (size_t NumClangCounters = ClangCountersEnd() - ClangCountersBegin())
-    Printf("INFO: %zd Clang Coverage Counters\n", NumClangCounters);
-
   if (size_t NumExtraCounters = ExtraCountersEnd() - ExtraCountersBegin())
     Printf("INFO: %zd Extra Counters\n", NumExtraCounters);
 }
@@ -185,13 +182,6 @@ void TracePC::UpdateObservedPCs() {
       }
     }
   }
-  if (size_t NumClangCounters =
-      ClangCountersEnd() - ClangCountersBegin()) {
-    auto P = ClangCountersBegin();
-    for (size_t Idx = 0; Idx < NumClangCounters; Idx++)
-      if (P[Idx])
-        ObservePC((uintptr_t)Idx);
-  }
 
   for (size_t i = 0, N = Min(CoveredFuncs.size(), NumPrintNewFuncs); i < N; i++) {
     Printf("\tNEW_FUNC[%zd/%zd]: ", i, CoveredFuncs.size());