Re: -fprofile-update=atomic vs. 32-bit architectures

[Sebastian Huber]

On 04/11/2022 10:53, Gabriel Paubert wrote:
2. Use
   if (__atomic_add_fetch_4 ((unsigned int *) &val, 1, __ATOMIC_RELAXED) ==
0)
     __atomic_fetch_add_4 (((unsigned int *) &val) + 1, 1, __ATOMIC_RELAXED);

if 32-bit atomics are available.
This assumes little-endian byte order.

Yes, but this approach would also work on big-endian architectures. You 
just have to use other addresses. I guess the compiler knows for which 
endianess it generates code.

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