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...unsigned Value = bitfield<Amount>(Storage); > bool Cond = bitfield<Amount>(Storage).isSet(); > > 3. In between > code: https://reviews.llvm.org/D82058#inline-754912 > > uint8_t Storage = 0; > using Amount = Bitfield<unsigned, 0, 4>; > > Amount::fieldOf(Storage) = true; > unsigned Value = Amount::fieldOf(Storage); > bool Cond = Amount::isSet(Storage); > > > Proposal 1 has the inconvenience of polluting the llvm namespace but is > also simpler implementation wise. > 2 and 3 are more involved and add their own gotchas (cast...

TL;DR: Have support in ADT for typed values packing into opaque scalar types - Code & design choices: https://reviews.llvm.org/D81580 - Usage: https://reviews.llvm.org/differential/changeset/?ref=2005337&whitespace=ignore-most - Example of rewrite: https://reviews.llvm.org/D81662 *CONTEXT* There are places in LLVM where we need to pack typed fields into opaque values. For instance,