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...as opposed to the need to declare helpers or somekind, like `enum` (manually)> * *[_|_|X] clean bitfields* - without exposing a bit manipulation `enum`. The enum is only used by the other bit-field classes. This is invisible to the class itself. No helpers are needed: just write SomeClassBits.SomeBit to refer to SomeBit in the bit-field of SomeClass. > * *[_|_|X] automatic inheritance of unused bits* - no need to get offset from super (manually). > * *[_|_|X] automatic calculation of unused bits* - changing a single bitfield doesn't require any other change, but the actual bitfie...

Ehud, can you elaborate on which classes you're trying to change. I know some of the classes already use methods like getSubclassDataFromInstruction() to hide bits from the subclasses. They could probably shift the data too. ~Craig On Fri, Dec 27, 2019 at 9:35 AM Bruno Ricci via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Hi, > > On 26/12/2019 20:53, Ehud Katz via