[llvm] [RISCV] Change vector tuple type's TypeSize to scalable (PR #114329)

[Brandon Wu via llvm-commits]

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@@ -21378,6 +21382,9 @@ SDValue RISCVTargetLowering::joinRegisterPartsIntoValue(
     return Val;
   }
 
+  if (ValueVT.isRISCVVectorTuple())
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4vtomat wrote:

Actually we can remove it after removing tuple from scalable vector type.

https://github.com/llvm/llvm-project/pull/114329