[llvm] [LV] Check early for supported interleave factors with scalable types [nfc] (PR #111592)
Florian Hahn via llvm-commits
llvm-commits at lists.llvm.org
Wed Oct 9 04:35:45 PDT 2024
================
@@ -3414,9 +3415,14 @@ bool LoopVectorizationCostModel::interleavedAccessCanBeWidened(
if (hasIrregularType(ScalarTy, DL))
return false;
+ // We currently only know how to emit interleave/deinterleave with
+ // Factor=2 for scalable vectors. This is purely an implementation
+ // limit.
+ if (VF.isScalable() && InterleaveFactor != 2)
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fhahn wrote:
If there's the same check just later in LV, could it be replaced by an assert?
https://github.com/llvm/llvm-project/pull/111592
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