[llvm] [IA][RISCV] Support VP loads/stores in InterleavedAccessPass (PR #120490)

[Luke Lau via llvm-commits]

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@@ -630,11 +630,34 @@ getVectorDeinterleaveFactor(IntrinsicInst *II,
   return true;
 }
 
+/// Check the interleaved mask
+///
+/// - if a value within the optional is non-nullptr, the value corresponds to
+///   deinterleaved mask
+/// - if a value within the option is nullptr, the value corresponds to all-true
+///   mask
+/// - return nullopt if mask cannot be deinterleaved
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lukel97 wrote:

This comment needs updated now that it no longer returns std::optional

https://github.com/llvm/llvm-project/pull/120490