From: Arnd Bergmann <arnd@xxxxxxxx> Date: Sat, 4 Jan 2020 22:51:44 +0100 > In some configurations, gcc tries too hard to optimize this code: > > drivers/net/ethernet/mellanox/mlx5/core/en_stats.c: In function 'mlx5e_grp_sw_update_stats': > drivers/net/ethernet/mellanox/mlx5/core/en_stats.c:302:1: error: the frame size of 1336 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] > > As was stated in the bug report, the reason is that gcc runs into a corner > case in the register allocator that is rather hard to fix in a good way. > > As there is an easy way to work around it, just add a comment and the > barrier that stops gcc from trying to overoptimize the function. > > Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92657 > Cc: Adhemerval Zanella <adhemerval.zanella@xxxxxxxxxx> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Saeed, please take this. Thank you.
