tree 47b2d97c943c3aeedbec49f843584e283ed0c436
parent 3e04aade4e7a53aebbbed1a1268117f1f522bfb0
author Derek Mauro <dmauro@google.com> 1652915628 -0700
committer Copybara-Service <copybara-worker@google.com> 1652915669 -0700

Use SSE instructions for prefetch when __builtin_prefetch is unavailable

This notably gets prefetch working on MSVC

Implementation note:
https://docs.microsoft.com/en-us/windows/win32/api/winnt/nf-winnt-prefetchcacheline
MSVC does have PreFetchCacheLine, but that would require including <windows.h>
in a header

PiperOrigin-RevId: 449602543
Change-Id: I5e6ca4b7c3d287779aa03c2fd348b41fb65c3680