Revert "[PGO] Context sensitive PGO (part 1)"

This reverts commit r354930, it was causing UBSan failures.

llvm-svn: 354953

1 files changed, 0 insertions, 19 deletions

diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp
index ccb651a22b3..8a2ff7769f1 100644
--- a/llvm/lib/ProfileData/InstrProf.cpp
+++ b/llvm/lib/ProfileData/InstrProf.cpp
@@ -1011,25 +1011,6 @@ void getMemOPSizeRangeFromOption(StringRef MemOPSizeRange, int64_t &RangeStart,
   assert(RangeLast >= RangeStart);
 }
 
-// Create a COMDAT variable INSTR_PROF_RAW_VERSION_VAR to make the runtime
-// aware this is an ir_level profile so it can set the version flag.
-void createIRLevelProfileFlagVar(Module &M, bool IsCS) {
-  const StringRef VarName(INSTR_PROF_QUOTE(INSTR_PROF_RAW_VERSION_VAR));
-  Type *IntTy64 = Type::getInt64Ty(M.getContext());
-  uint64_t ProfileVersion = (INSTR_PROF_RAW_VERSION | VARIANT_MASK_IR_PROF);
-  if (IsCS)
-    ProfileVersion |= VARIANT_MASK_CSIR_PROF;
-  auto IRLevelVersionVariable = new GlobalVariable(
-      M, IntTy64, true, GlobalValue::WeakAnyLinkage,
-      Constant::getIntegerValue(IntTy64, APInt(64, ProfileVersion)), VarName);
-  IRLevelVersionVariable->setVisibility(GlobalValue::DefaultVisibility);
-  Triple TT(M.getTargetTriple());
-  if (TT.supportsCOMDAT()) {
-    IRLevelVersionVariable->setLinkage(GlobalValue::ExternalLinkage);
-    IRLevelVersionVariable->setComdat(M.getOrInsertComdat(VarName));
-  }
-}
-
 // Create the variable for the profile file name.
 void createProfileFileNameVar(Module &M, StringRef InstrProfileOutput) {
   if (InstrProfileOutput.empty())