[PATCH] D121940: [SLP] Support internal users of splat loads

Alexey Bataev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Apr 18 08:38:31 PDT 2022


ABataev added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp:1179
+            // Bail out if we have too many uses to save compilation time.
+            static constexpr unsigned Limit = 16;
+            if (V1->hasNUsesOrMore(Limit) || V2->hasNUsesOrMore(Limit))
----------------
That's too much, I assume. Better to have 4-8, it may require to many iterations in the all_of function.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121940/new/

https://reviews.llvm.org/D121940



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