Brijesh-Thakkar commented on PR #20996:
URL: https://github.com/apache/nuttx/pull/20996#issuecomment-6516772876

   Tested this on top of master 3122150b1f (cherry-picked, apps e0174bf71), 
arm-none-eabi-gcc 14.2.1 / avr-gcc 14.3.0:
   
   | config | master total | +#20996 total | libgcc 64-bit helpers left |
   |---|---|---|---|
   | stm32vldiscovery:nsh (FULLOPT) | 40680 | 39808 (-872) | none |
   | breadxavr:nsh (FULLOPT) | 58485 | 58367 (-118) | __muldi3 
(clock_initialize), __udivdi3 (up_alarm_tick_start) |
   | nucleo-f072rb:nsh (debug, no FULLOPT) | 86839 | 86843 | unchanged, 
expected since div_const fast path is FULLOPT-only |
   
   So with FULLOPT this fully removes the 64-bit helpers on Cortex-M3. On AVR 
two arch/clock call
   sites remain; I'll look at those separately under #18849.


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