[llvm] [RISCV][GISEL] Legalize G_EXTRACT_SUBVECTOR (PR #109426)

[Thorsten Schütt via llvm-commits]

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@@ -3702,8 +3702,15 @@ LegalizerHelper::bitcastExtractSubvector(MachineInstr &MI, unsigned TypeIdx,
   if (DstTy == CastTy)
     return Legalized;
 
-  auto AdjustAmt = CastTy.getScalarType().getSizeInBits() /
-                   DstTy.getScalarType().getSizeInBits();
+  if (DstTy.getSizeInBits() != CastTy.getSizeInBits())
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tschuett wrote:

Could they be scalable vectors?

https://github.com/llvm/llvm-project/pull/109426