[PATCH] D74387: [SYCL] Defer __float128 type usage diagnostics

[Johannes Doerfert via Phabricator via cfe-commits]

jdoerfert added a comment.

As I mentioned before. As long as the type is not "used" you can treat it as a sequence of bytes just as well. So we can lower `__float128` to `char [16]` with the right alignment. SPIRV will never see unsupported types and the code works because we never access it as `float128` anyway. WDYT?


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https://reviews.llvm.org/D74387