[llvm] Provide access to raw bits in PackedVector. NFC. (PR #98944)

[Stanislav Mekhanoshin via llvm-commits]

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@@ -141,6 +141,8 @@ class PackedVector : public PackedVectorBase<T, BitNum, BitVectorTy,
     Bits |= RHS.Bits;
     return *this;
   }
+
+  operator BitVectorTy() const { return Bits; }
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rampitec wrote:

That's even easier to use. Done.

https://github.com/llvm/llvm-project/pull/98944