[llvm] [LV] Support binary and unary operations with EVL-vectorization (PR #93854)

[via llvm-commits]

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@@ -2642,6 +2694,11 @@ struct VPWidenStoreEVLRecipe final : public VPWidenMemoryRecipe {
     setMask(Mask);
   }
 
+  VPWidenStoreEVLRecipe *clone() override {
+    llvm_unreachable("VPWidenStoreEVLRecipe cannot be cloned");
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LiqinWeng wrote:

I don't understand the purpose of this interface. I want to know why it is set to unreachable

https://github.com/llvm/llvm-project/pull/93854