Messages in this thread | | | Date | Wed, 12 Aug 2020 14:30:32 -0500 | From | Segher Boessenkool <> | Subject | Re: [PATCH v2] powerpc/uaccess: Use flexible addressing with __put_user()/__get_user() |
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On Wed, Aug 12, 2020 at 02:32:51PM +0200, Christophe Leroy wrote: > Anyway, it seems that GCC doesn't make much use of the "m<>" and the > pre-update form.
GCC does not use update form outside of inner loops much. Did you expect anything else?
> Most of the benefit of flexible addressing seems to be > achieved with patch 1 ie without the "m<>" constraint and update form.
Yes.
Segher
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