On Thu, Nov 21, 2002 at 10:30:49AM +0100, David Zaffiro wrote:
> I use -momit-leaf-frame-pointer for optimization in some own projects,
> instead of the "-fomit-frame-pointer". For me, this results in better
> codesize/speed compared to both "-fomit-frame-pointer" or no option at
> all. Actually gcc-2.95 seems to support this feature as well, but it
> never made it into the 2.95 docs... It makes debugging a lot easier too.
>
> So anyone "caring to benchmark", could you please test the
> "-momit-leaf-frame-pointer" option for x86 as well...
Well, I tried on a 2.4.18+patches with gcc 2.95.3. bzImage is :
538481 bytes with -fomit-frame-pointer
538510 bytes with no particular flag
542137 bytes with -momit-leaf-frame-pointer.
So -fomit-frame-pointer shows the same as other's observation, but in this
particular case, -momit-leaf-frame-pointer made a slightly bigger kernel.
Didn't have time to inspect all sections, though.
Cheers,
Willy
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This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:37 EST