nemanjai requested changes to this revision.
nemanjai added a comment.
This revision now requires changes to proceed.

This is not what we want. The builtin behaves correctly. It is equivalent to 
the generic `__builtin_copysign` and it would be very surprising to a user if 
it reverses the operands depending on which version you use. What is 
implemented incorrectly is `vec_cpsgn` so that's what should change.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D84962/new/

https://reviews.llvm.org/D84962

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