CONFIG_FRAME_POINTER on ppc/ppc64?
segher at kernel.crashing.org
Tue Aug 16 19:44:33 EST 2005
>> Because -fomit-frame-pointer and -fno-omit-frame-pointer have no
>> effect on ppc or ppc64, I assume. :)
> I'm assuming that's a guess. The reason I ask that is my memory
> serves correctly r31 is used as the frame pointer if compiled that
> way. Maybe some GCC expert can chime in. I'll copy David Edelsohn
> and see if I get a response :)
Yes, GPR31 is used as frame pointer. All optimization
levels other than -O0 enable -fomit-frame-pointer. But
-fno-omit-frame-pointer certainly works.
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