[PATCH] D114087: [SLP]Improve registering and merging of compatible shuffles.
Alexey Bataev via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Nov 17 06:45:03 PST 2021
ABataev created this revision.
ABataev added reviewers: RKSimon, anton-afanasyev, dtemirbulatov, vporpo.
Herald added a subscriber: hiraditya.
ABataev requested review of this revision.
Herald added a project: LLVM.
If several shuffle instructions are emitted, some of them might
same/compatible (less defined) with the previously emitted ones. Such
shuffles can be removed safely, improving the total cost of the
vectorized code.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D114087
Files:
llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
llvm/test/Transforms/SLPVectorizer/X86/diamond_broadcast_extra_shuffle.ll
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