Paolo Bonzini <bonz...@gnu.org> writes: > This in turn means that the description given by SHIFT_COUNT_TRUNCATED > must be exact. Right now !SHIFT_COUNT_TRUNCATED means "I don't know", > I want it to mean "it is never truncated".
You need to do more work to make that happen, as SHIFT_COUNT_TRUNCATED applies to both the shift instructions and the bitfield instructions. On some processors one or the other is truncated; SHIFT_COUNT_TRUNCATED may currently only be set to 1 if both are truncated. (E.g., I believe that m68k truncates shifts but not bitfield instructions.) Ian
