[Bug fortran/79930] Potentially Missed Optimisation for MATMUL / DOT_PRODUCT

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79930

--- Comment #15 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I wonder if we should back port this as well since the bug can have a serious
performance hit without it. ?