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

[Craig Topper via llvm-commits]

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@@ -21309,6 +21310,25 @@ bool RISCVTargetLowering::splitValueIntoRegisterParts(
     return true;
   }
 
+  if (ValueVT.isRISCVVectorTuple() && PartVT.isRISCVVectorTuple()) {
+    unsigned ValNF = ValueVT.getRISCVVectorTupleNumFields();
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topperc wrote:

Is this only called when PartVT and ValueVT are the same type? That shouldn't require any node to be created.

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