[clang] [Clang] Fix crash on comparisons of `_BitInt` vectors wider than 128 bits (PR #232797)

[Akash Manna via cfe-commits]

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@@ -13633,6 +13633,14 @@ QualType Sema::CheckCompareOperands(ExprResult &LHS, ExprResult &RHS,
 
 QualType Sema::GetSignedVectorType(QualType V) {
   const VectorType *VTy = V->castAs<VectorType>();
+  if (const auto *BIT = VTy->getElementType()->getAs<BitIntType>()) {
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akash-manna-sky wrote:

Yes, that also makes sense to me. 

https://github.com/llvm/llvm-project/pull/232797