[PATCH] D136919: [X86][RFC] Change mangle name of __bf16 from u6__bf16 to DF16b

[Phoebe Wang via Phabricator via cfe-commits]

pengfei added a comment.

In D136919#3907974 <https://reviews.llvm.org/D136919#3907974>, @stuij wrote:

> As for Arm/AAch64, we're still assessing the amount of pain we'd cause with the name change, but we don't have an issue with letting go of storage-only.

Thanks @stuij. Indeed! ABI breaking is an annoying problem. I don't have a good idea for it. I tend to leave it as breaking. I think it's reasonable iff we changed the semantics together. And it does make sense to use a different mangling for storage-only type.


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