diff --git a/clang/lib/CIR/CodeGen/CIRGenModule.cpp b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
index 133d9e3bd2fb..6d9162383aab 100644
--- a/clang/lib/CIR/CodeGen/CIRGenModule.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenModule.cpp
@@ -2476,7 +2476,8 @@ void CIRGenModule::emitAliasForGlobal(StringRef mangledName,
 
   // Switch any previous uses to the alias.
   if (op) {
-    llvm_unreachable("NYI");
+    op->replaceAllUsesWith(alias);
+    op->erase();
   } else {
     // Name already set by createCIRFunction
   }
diff --git a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
index 34ffd1e98a76..bc81f93b7b55 100644
--- a/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
+++ b/mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp
@@ -1177,16 +1177,19 @@ LogicalResult CallOp::verifySymbolUses(SymbolTableCollection &symbolTable) {
       return emitOpError()
              << "'" << calleeName.getValue()
              << "' does not reference a symbol in the current scope";
+
     if (auto fn = dyn_cast<LLVMFuncOp>(callee)) {
       if (failed(verifyCallOpDebugInfo(*this, fn)))
         return failure();
       fnType = fn.getFunctionType();
     } else if (auto ifunc = dyn_cast<IFuncOp>(callee)) {
       fnType = ifunc.getIFuncType();
+    } else if (auto aliasFn = dyn_cast<AliasOp>(callee)){
+      fnType = aliasFn.getType();
     } else {
       return emitOpError()
              << "'" << calleeName.getValue()
-             << "' does not reference a valid LLVM function or IFunc";
+             << "' does not reference a valid LLVM function or IFunc or Alias";
     }
   }