[Bug target/79430] [7/8 Regression] action of statement incorrectly optimised away

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79430

--- Comment #71 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 41260
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41260&action=edit
Proposed patch (reverting all updates to reg-stack.c after r244920

If no other solution can be found, we can always apply this patch,
which simply reverts all changes after r244920 . The corresponding
test cases would have to be set to XFAIL.