Index: llvm/include/llvm/MC/MCPseudoProbe.h
===================================================================
--- llvm/include/llvm/MC/MCPseudoProbe.h
+++ llvm/include/llvm/MC/MCPseudoProbe.h
@@ -123,10 +123,6 @@
 
   bool isEntry() const { return Index == PseudoProbeFirstId; }
 
-  bool isTailCall() const {
-    return Attributes & static_cast<uint8_t>(PseudoProbeAttributes::Reserved);
-  }
-
   uint64_t getGuid() const { return Guid; }
 
   uint64_t getIndex() const { return Index; }
Index: llvm/lib/MC/MCPseudoProbe.cpp
===================================================================
--- llvm/lib/MC/MCPseudoProbe.cpp
+++ llvm/lib/MC/MCPseudoProbe.cpp
@@ -275,9 +275,6 @@
   }
   OS << "Index: " << Index << "  ";
   OS << "Type: " << PseudoProbeTypeStr[static_cast<uint8_t>(Type)] << "  ";
-  if (isTailCall()) {
-    OS << "TailCall  ";
-  }
   std::string InlineContextStr = getInlineContextStr(GUID2FuncMAP, ShowName);
   if (InlineContextStr.size()) {
     OS << "Inlined: @ ";