pitrou commented on code in PR #14674:
URL: https://github.com/apache/arrow/pull/14674#discussion_r1060819352
##########
cpp/cmake_modules/SetupCxxFlags.cmake:
##########
@@ -48,22 +48,30 @@ if(ARROW_CPU_FLAG STREQUAL "x86")
set(ARROW_SSE4_2_FLAG "")
set(ARROW_AVX2_FLAG "/arch:AVX2")
set(ARROW_AVX512_FLAG "/arch:AVX512")
+ set(ARROW_AVX512_ICX_FLAG "/arch:AVX512")
set(CXX_SUPPORTS_SSE4_2 TRUE)
else()
set(ARROW_SSE4_2_FLAG "-msse4.2")
set(ARROW_AVX2_FLAG "-march=haswell")
# skylake-avx512 consists of AVX512F,AVX512BW,AVX512VL,AVX512CD,AVX512DQ
set(ARROW_AVX512_FLAG "-march=skylake-avx512 -mbmi2")
+ # icelake-server consists of
AVX512VBMI,AVX512IFMA,AVX512VBMI2,AVX512VPOPCNTDQ
+ # AVX512BITALG,AVX512VNN
+ set(ARROW_AVX512_ICX_FLAG "-march=icelake-server -mbmi2")
# Append the avx2/avx512 subset option also, fix issue ARROW-9877 for
homebrew-cpp
set(ARROW_AVX2_FLAG "${ARROW_AVX2_FLAG} -mavx2")
set(ARROW_AVX512_FLAG
"${ARROW_AVX512_FLAG} -mavx512f -mavx512cd -mavx512vl -mavx512dq
-mavx512bw")
+ set(ARROW_AVX512_ICX_FLAG
+ "${ARROW_AVX512_ICX_FLAG} -mavx512ifma -mavx512vbmi -mavx512vnni
-mavx512vbmi2")
Review Comment:
Don't you need to also the other subsets as well, such as `-mavx512f
-mavx512cd -mavx512vl -mavx512dq -mavx512bw`?
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