nemanjai added a comment.

In https://reviews.llvm.org/D36764#844692, @joerg wrote:

> divtc3 and friends.


Ah, OK. I see what you mean now. These builtins are for `XCmode` calculations 
(complex values as two `XFmode` components). Since PPC has no support for 
`XFmode` (i.e. 80-bit long double) in HW (and I don't imagine emulation is 
useful), I'm not sure it's meaningful to expose these builtins.

That's at least my interpretation, but please let me know if I'm way off base 
with that analysis.


https://reviews.llvm.org/D36764



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