dmgreen added a comment. In D108138#2948995 <https://reviews.llvm.org/D108138#2948995>, @david-arm wrote:
> In D108138#2948975 <https://reviews.llvm.org/D108138#2948975>, @dmgreen wrote: > >>> I'm under the impression that the vectoriser has a policy of never making >>> scalar transformations >> >> I'm not sure what you mean. I've not looked into the details, but it could >> presumably be done as some sort of VPlan transformation, possibly in the >> constructions of vplans to treat switches like multiple icmp's/branches? > > Hi @dmgreen, I just meant that if LV makes a scalar transformation prior to > legality/cost-model checks, then for some reason we don't vectorise, we then > end up with a changed scalar body without any vectorisation. Oh yeah, that makes sense. I was wondering if we could teach VPlan to treat them as ICmp/Br without having to actually transform the IR, just doing it as part of constructing the VPlan. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D108138/new/ https://reviews.llvm.org/D108138 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
