add missing return statement to inlined vec_signed (#51116)
Summary:
Fixes #{issue number}
This is not really a new issue, just a proposed minor fix to a recent previous issue (now closed) https://github.com/pytorch/pytorch/issues/50640 which was a fix for https://github.com/pytorch/pytorch/issues/50439.
That fix added inlining for vec_signed (and others) but in one case the return was accidentally omitted. This results in a build error:
``` from �[01m�[K../aten/src/ATen/cpu/vec256/vec256.h:19�[m�[K,
from �[01m�[Katen/src/ATen/native/cpu/FillKernel.cpp.VSX.cpp:3�[m�[K:
�[01m�[K../aten/src/ATen/cpu/vec256/vsx/vsx_helpers.h:�[m�[K In function ‘�[01m�[Kvint32 vec_signed(const vfloat32&)�[m�[K’:
�[01m�[K../aten/src/ATen/cpu/vec256/vsx/vsx_helpers.h:33:1:�[m�[K �[01;31m�[Kerror: �[m�[Kno return statement in function returning non-void [�[01;31m�[K-Werror=return-type�[m�[K]
```
I've confirmed that the error disappears after this one-line fix. (Note: There is another issue encountered later in the build unrelated to this particular fix, as I noted in a separate comment in the original issue. I'm trying to make some sense of that one, but in any event it would be a subject for another issue/PR).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/51116
Reviewed By: heitorschueroff
Differential Revision: D26078213
Pulled By: malfet
fbshipit-source-id: 59b2ee19138fa1b8d8ec1d35ca4a5ef0a67bc123
