achieveartificialintelligence added a comment. In D93298#3020917 <https://reviews.llvm.org/D93298#3020917>, @frasercrmck wrote:
> In D93298#3014160 <https://reviews.llvm.org/D93298#3014160>, @jrtc27 wrote: > >> The amount of duplication here really depresses me and is only going to get >> worse once codegen is added, but TableGen isn't able to have operands that >> use different register classes based on even HwMode, that I know of, and >> whilst you could make use of multi classes to generate both versions of the >> instructions you can't easily do that for patterns, so I don't know what the >> right answer is. > > Do we know if it's possible to teach TableGen how to do that? This extension > seems like a good reason to implement such a feature as the duplication > really is unfortunate. > > I thought that `MCOperandInfo` may be an issue but there's already dynamic > lookup there to support `isLookupPtrRegClass`. @frasercrmck Thank you for your guidance. I don't quite understand what is the role of `isLookupPtrRegClass` here, or how to use `isLookupPtrRegClass`? Could you please give me more detailed instructions? Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D93298/new/ https://reviews.llvm.org/D93298 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
