[clang] [llvm] [LLVM] Add validation to check the number of intrinsic args (PR #196563)

[Andy Kaylor via cfe-commits]

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@@ -1050,44 +1059,40 @@ matchIntrinsicType(Type *Ty, ArrayRef<Intrinsic::IITDescriptor> &Infos,
       return true;
     return ThisArgVecTy != VectorType::getInteger(ReferenceType);
   }
+  case IITDescriptor::VarArg:
+    // VarArg token should be consumed by `getIntrinsicInfoTableEntries`, so we
+    // should never see it here.
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andykaylor wrote:

llvm_unreachable?

https://github.com/llvm/llvm-project/pull/196563