pcwang-thead added a comment. In D144696#4149706 <https://reviews.llvm.org/D144696#4149706>, @craig.topper wrote:
> How much of the existing vector code in the backend including tablegen can be > reused for 0.71? How much of the intrinsic interface can be used? If we’re > talking about completely duplicating everything it is very unlikely we can > accept it. RISCVGenDAGISel.inc, for example, is already significantly larger > than any other target in tree. I don’t know how big it can get before it > becomes an issue. > > How many people are going to maintain this other version? Just FYI. We have tried our best to reuse code for RVV 1.0 and there are about 500 lines for C intrinsics, 80 lines for LLVM intrinsics, 1200 lines for pseudos and patterns and 1500 lines for custom ISel. The pseudos/patterns/ISel parts can be less since we have duplicated some code and the impact on `RISCVGenDAGISel.inc` is hard to estimate because we have some custom extensions. And for MC layer, the code are completely duplicated since a lot of instructions have different encodings. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D144696/new/ https://reviews.llvm.org/D144696 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
