When we compile .winxed to .pir, the generated PIR code has the following header:
# THIS IS A GENERATED FILE! DO NOT EDIT!
# Begin generated code
It should also mention the name of the original source file that was used to create the file, if any. This way we can trace back from the generated file to the original source.
See also parrot/parrot#758
This was fixed in 2bd58f9
Released 1.8.0 with the fix. Closing.