Index: llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -826,9 +826,12 @@
     // Create an expression where the register's entry value is used.
     DIExpression *EntryExpr = DIExpression::get(
         MF->getFunction().getContext(), {dwarf::DW_OP_LLVM_entry_value, 1});
+    const auto &TRI = *MF->getSubtarget().getRegisterInfo();
     for (auto RegEntry : ForwardedRegWorklist) {
-      MachineLocation MLoc(RegEntry.first);
-      finishCallSiteParams(MLoc, EntryExpr, RegEntry.second, Params);
+      if (TRI.isCalleeSavedPhysReg(RegEntry.first, *MF)) {
+        MachineLocation MLoc(RegEntry.first);
+        finishCallSiteParams(MLoc, EntryExpr, RegEntry.second, Params);
+      }
     }
   }
 }