[PATCH] D159322: LoopVectorize: Set branch_weight for conditional branches

[Matthias Braun via Phabricator via llvm-commits]

MatzeB marked 2 inline comments as done.
MatzeB added inline comments.


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Comment at: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:3110
+      unsigned TripCount = UF;
+      TripCount *= VF.isScalable() ? VF.getKnownMinValue() : VF.getFixedValue();
+      MDNode *BranchWeights = MDB.createBranchWeights(1, TripCount - 1);
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mtrofin wrote:
> can either of the VF methods return 0?
I don't think vectorizing with a vector width of 0 (or a minimum of 0) can happen.


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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D159322/new/

https://reviews.llvm.org/D159322