[Bug tree-optimization/102655] wrong code from optimizer for simple loop

[wildebeest at av8n dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102655

--- Comment #4 from John Denker <wildebeest at av8n dot com> ---
Created attachment 51572
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51572&action=edit
Slightly mutated version 'snafu', for contrast; no bug observed.

Slightly mutated version 'snafu', for contrast; no bug observed.