emkornfield commented on a change in pull request #6985:
URL: https://github.com/apache/arrow/pull/6985#discussion_r413575153
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File path: cpp/cmake_modules/SetupCxxFlags.cmake
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@@ -40,12 +40,13 @@ if(ARROW_CPU_FLAG STREQUAL "x86")
set(CXX_SUPPORTS_SSE4_2 TRUE)
else()
set(ARROW_SSE4_2_FLAG "-msse4.2")
- set(ARROW_AVX2_FLAG "-mavx2")
+ set(ARROW_AVX2_FLAG "-march=core-avx2")
Review comment:
hopefully this is acceptable change. I'm open to other suggestions on
how to enable bmi2 (not for some reason using "-mbmi2 -mavx2" didn't seem to
work for me, but I can try again.
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