> Oh, I forgot to say, I don't understand why the "rotate" operator is > special cased? > > If I understand it correctly, the effect of the (existing) rotate is > both to check the constant range, AND to disallow registers as the shift > amount. This difference has no effect on Thumb, but might cause ARM mode > some troubles? > > Is this likely to be deliberate, or an oversight? I can't see any reason > in the ARM ARM why this should be the case.
Deliberate. ARM only has rotatert (which for immediate operands can be substituted at assembly generation time). Paul
