craig.topper added a comment. In D116935#3232203 <https://reviews.llvm.org/D116935#3232203>, @lebedev.ri wrote:
> In D116935#3232126 <https://reviews.llvm.org/D116935#3232126>, @craig.topper > wrote: > >> If I remember correctly, the Or and And folds for 0 and all 1s are there to >> optimize bitfield codegen for the frontend. Are we losing that optimization >> if this patch goes in before switching clang to InstSimplifyFolder? > > True, but why is that optimization there in the first place? > Presumably it shouldn't matter nowadays. Probably for -O0 where there is no optimizer, Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D116935/new/ https://reviews.llvm.org/D116935 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
