[ARROW-2186] [C++] Clean up architecture specific compiler flags

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Fix Version/s: 0.14.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/18151
• Assignee: Unassigned
• Reporter: Wes McKinney
• Created: 20/Feb/18 02:34
• Updated: 11/Jan/23 07:19
• Resolved: 31/May/19 00:38

Description

I noticed that -maltivec is being passed to the compiler on Linux, with an x86_64 processor. That seemed odd to me. It prompted me to look more generally at our compiler flags related to hardware optimizations. We have the ability to pass -msse3, but there is a ARROW_USE_SSE which is only used as a define in some headers. There is ARROW_ALTIVEC, but no option to pass -march. Nothing related to AVX/AVX2/AVX512. I think this could do for an overhaul