remove InstrColdFuncCovMode

Author: wlei-llvm

clang/test/CodeGen/pgo-cold-function-coverage.c

@@ -1,6 +1,6 @@
 // Test -fprofile-generate-cold-function-coverage 
 
-// RUN: split-file %s %t
+// RUN: rm -rf %t && split-file %s %t
 // RUN: %clang -O2 -fprofile-generate-cold-function-coverage=/xxx/yyy/ -fprofile-sample-accurate -fprofile-sample-use=%t/pgo-cold-func.prof  -S -emit-llvm -o - %t/pgo-cold-func.c | FileCheck %s
 
 // CHECK: @__llvm_profile_filename = {{.*}} c"/xxx/yyy/default_%m.profraw\00"

llvm/include/llvm/Transforms/Instrumentation/PGOInstrumentation.h

@@ -53,8 +53,6 @@ class PGOInstrumentationGenCreateVar
   bool ProfileSampling;
 };
 
-enum class InstrColdFuncCovMode { Conservative = 0, Optimistic };
-
 enum class PGOInstrumentationType { Invalid = 0, FDO, CSFDO, CTXPROF };
 /// The instrumentation (profile-instr-gen) pass for IR based PGO.
 class PGOInstrumentationGen : public PassInfoMixin<PGOInstrumentationGen> {