Re: [PATCH 05/17] powerpc: Add __attribute_const__ to ffs()-family implementations

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi!

On Thu, Aug 07, 2025 at 03:16:35PM +0530, Madhavan Srinivasan wrote:
> making them eligible for compiler optimization.

You can instead use GCC for this.  __builtin_ffs () exists since 2003,
and has this attribute built-in, as well as tens of other optimisations
that the kernel thing misses.

Of course using existing stuff instead of cobbling together something
half working prevents you from having a lot of fun ;-)


Segher




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Kernel Development]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Info]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Linux Media]     [Device Mapper]

  Powered by Linux