1 files changed, 11 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
index 57ed2f7..0c0b54f 100644
--- a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
+++ b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
@@ -279,6 +279,16 @@ static inline bool shouldRecordFunctionAddr(Function *F) {
   return F->hasAddressTaken();
 }
 
+static inline Comdat *getOrCreateProfileComdat(Module &M,
+                                               InstrProfIncrementInst *Inc) {
+  // COFF format requires a COMDAT section to have a key symbol with the same
+  // name.
+  StringRef ComdatPrefix = (Triple(M.getTargetTriple()).isOSBinFormatCOFF()
+                                ? getInstrProfDataVarPrefix()
+                                : getInstrProfComdatPrefix());
+  return M.getOrInsertComdat(StringRef(getVarName(Inc, ComdatPrefix)));
+}
+
 GlobalVariable *
 InstrProfiling::getOrCreateRegionCounters(InstrProfIncrementInst *Inc) {
   GlobalVariable *NamePtr = Inc->getName();
@@ -297,8 +307,7 @@ InstrProfiling::getOrCreateRegionCounters(InstrProfIncrementInst *Inc) {
   Function *Fn = Inc->getParent()->getParent();
   Comdat *ProfileVarsComdat = nullptr;
   if (Fn->hasComdat())
-    ProfileVarsComdat = M->getOrInsertComdat(
-        StringRef(getVarName(Inc, getInstrProfComdatPrefix())));
+    ProfileVarsComdat = getOrCreateProfileComdat(*M, Inc);
   NamePtr->setSection(getNameSection());
   NamePtr->setAlignment(1);
   NamePtr->setComdat(ProfileVarsComdat);