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Antoine PitrouWes McKinney
dd896c908e0
Antoine Pitrou authored and Wes McKinney committed 780068478a4
ARROW-3844: [C++] Remove ARROW_USE_SSE and ARROW_SSE3

Those options can be detected programmatically (SSE3 and SSE4.2 are available on all recent x86-64 CPUs).
Instead we add a ARROW_USE_SIMD option that can be disabled to exercise non-SIMD fallback paths.

Author: Antoine Pitrou <antoine@python.org>

Closes #3037 from pitrou/ARROW-3844-remove-sse-switches and squashes the following commits:

8adb98baf <Antoine Pitrou> ARROW-3844:  Remove ARROW_USE_SSE and ARROW_SSE3