[PATCH] D87378: [SVE] Fix InstCombinerImpl::PromoteCastOfAllocation for scalable vectors

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen added inline comments.


================
Comment at: llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp:103
+  // checks.
+  if (isa<ScalableVectorType>(AllocElTy) || isa<ScalableVectorType>(CastElTy))
+    return nullptr;
----------------
This also seems to prevent the optimisation on bitcasts between scalable-vector-type T1 and an alloca with scalable-vector-type T2. You can make the expression use `!=` instead of `||`, but then the code below needs some more changes to work on TypeSize.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D87378/new/

https://reviews.llvm.org/D87378