Translator doesn't handle LLVM integer types.

https://godbolt.org/z/p3D7TX - legit OpenCL code, which translator can't convert to SPIR-V due to `i3` type.
The translator with the assertions gives me:
```
InvalidBitWidth: Invalid bit width in input: 3
```

Proper LLVM back-end should be able to handle such types...

Is there an easy way to avoid such types in LLVM IR by configuring SPIR target in clang?

Start with the linked Godbolt reproduction and confirm that the OpenCL input produces an i3 LLVM type and the reported InvalidBitWidth error. No source file or test is named; trace the translator's LLVM integer-type handling, and consider the issue complete when the reproduction is handled or a confirmed SPIR target configuration workaround is documented.

Written by the indexing model from the issue text.