cyb70289 commented on a change in pull request #9657:
URL: https://github.com/apache/arrow/pull/9657#discussion_r590136872
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File path: cpp/src/arrow/util/cpu_info.cc
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@@ -330,6 +346,29 @@ void CpuInfo::Init() {
if (QueryPerformanceFrequency(&performance_frequency)) {
max_mhz = static_cast<float>(performance_frequency.QuadPart);
}
+#elif defined(__APPLE__)
+ // On macOS, get CPU information from system information base
+ struct SysCtlCpuFeature {
+ const char* name;
+ int64_t flag;
+ };
+ for (auto feature : std::vector<SysCtlCpuFeature>{
+ {"hw.optional.sse4_2", SSSE3 | SSE4_1 | SSE4_2 | POPCNT},
+ {"hw.optional.avx1_0", AVX},
+ {"hw.optional.avx2_0", AVX2},
+ {"hw.optional.bmi1", BMI1},
+ {"hw.optional.bmi2", BMI2},
+ {"hw.optional.avx512f", AVX512F},
+ {"hw.optional.avx512cd", AVX512CD},
+ {"hw.optional.avx512dq", AVX512DQ},
+ {"hw.optional.avx512bw", AVX512BW},
+ {"hw.optional.avx512vl", AVX512VL},
Review comment:
Per my knowledge, `NEON` exists since 32 bit Arm, and `ASIMD` extends it
to 64 bit system, with additional instructions and wider registers. `ASIMD`
should be the correct term for Arm64 world, but obviously `NEON` is well known
and widely used.
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