[llvm] [RISCV][TTI] Enable masked interleave vectorization (PR #150074)

[Mel Chen via llvm-commits]

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@@ -398,6 +398,10 @@ class RISCVTTIImpl final : public BasicTTIImplBase<RISCVTTIImpl> {
 
   bool enableInterleavedAccessVectorization() const override { return true; }
 
+  bool enableMaskedInterleavedAccessVectorization() const override {
+    return ST->hasVInstructions();
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Mel-Chen wrote:

This comment isn't opposing the use of hasVInstructions() here — in fact, I think it's a good thing.
I was just curious during my own implementation: why does enableInterleavedAccessVectorization return true directly without checking hasVInstructions()?

https://github.com/llvm/llvm-project/pull/150074