Add autogenerated FileCheck to test case

Author: R-Goc

llvm/test/CodeGen/WinEH/wineh-empty-seh-scope.ll

@@ -1,6 +1,10 @@
-; RUN: llc -mtriple=x86_64-pc-windows-msvc19.41.34120 %s
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=x86_64-pc-windows-msvc19.41.34120 %s | FileCheck %s
 
 define void @foo() personality ptr @__CxxFrameHandler3 {
+; CHECK-LABEL: foo:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    nop # avoids zero-length function
   call void @llvm.seh.scope.begin()
   unreachable
 }