[m-rev.] diff: compute ll_backend simplify tasks in just one place

[Zoltan Somogyi]

This should not need review. The diff is with -b.

Zoltan.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Log.st
Type: application/vnd.sailingtracker.track
Size: 575 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20260924/e0365de0/attachment.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DIFF.st
Type: application/vnd.sailingtracker.track
Size: 17526 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20260924/e0365de0/attachment-0001.bin>