[PATCH] D97278: [VPlan] Support to widen call intructions in VPlan native path

[Andrei Elovikov via Phabricator via llvm-commits]

a.elovikov added inline comments.


================
Comment at: llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp:75
+        } else if (CallInst *CI = dyn_cast<CallInst>(Inst)) {
+          NewRecipe = new VPWidenCallRecipe(
+              *CI, Plan->mapToVPValues(CI->arg_operands()));
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For my education, how do we know that such wide version is available? What if the vectorization was forced by OMP pragma (so bypass any dependence analysis legality checks), but the function being called is some arbitrary function that doesn't have a wide variant (i.e. not an intrinsic and no OMP's vector variant available)?

Also, what was the previous behavior? Did we serialize the call?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D97278/new/

https://reviews.llvm.org/D97278