Checking the selection of the CPU, it seems this might related to the M4. The M0 target generates efficient code for Os. Also, it's not clear why function lookup_bifi with O3 for M4 is longer than the M0 version.
Checking the selection of the CPU, it seems this might related to the M4. The M0 target generates efficient code for Os. Also, it's not clear why function lookup_bifi with O3 for M4 is longer than the M0 version.