[llvm] arm64_32: extend @llvm.stackguard call to in-DAG 64-bits before handing off (PR #77318)

[Tim Northover via llvm-commits]

TNorthover wrote:

Thanks Matt, pushed it now with the suggested fix:

To github.com:llvm/llvm-project.git
   da04f306a88d..0215d2c58bfa  main -> main

https://github.com/llvm/llvm-project/pull/77318