[llvm] [GVN] Handle scalable vectors with the same size in VNCoercion (PR #123984)

[Nikita Popov via llvm-commits]

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@@ -21,6 +21,10 @@ bool canCoerceMustAliasedValueToLoad(Value *StoredVal, Type *LoadTy,
   if (StoredTy == LoadTy)
     return true;
 
+  if (isa<ScalableVectorType>(StoredTy) &&
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nikic wrote:

Do we have to check LoadTy as well? To e.g. make sure it doesn't have an aggregate wrapper around a single scalable type?

https://github.com/llvm/llvm-project/pull/123984