[Bug target/120835] on nvptx target with openmp, gcc 15.1 computes different results with differing -O levels.

[schulz.benjamin at googlemail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120835

--- Comment #4 from Benjamin Schulz <schulz.benjamin at googlemail dot com> ---
Created attachment 61725
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61725&action=edit
results with O1, now the matrix multiplication becomes crazy