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