ARROW-15607: [C++] Fix incorrect CPUID flag for AVX detection

j-mattsson · cyb70289 · commit d056829e877c · 2022-02-08T03:00:48.000Z
(I don't have any experience with this codebase so someone should probably review this before merging.) Closes #12347 from mjunix/avx-fix Authored-by: Johan Mattsson <39247600+mjunix@users.noreply.github.com> Signed-off-by: Yibo Cai <yibo.cai@arm.com>
diff --git a/cpp/src/arrow/util/cpu_info.cc b/cpp/src/arrow/util/cpu_info.cc
@@ -288,7 +288,7 @@ bool RetrieveCPUInfo(int64_t* hardware_flags, std::string* model_name,
   if (features_ECX[19]) *hardware_flags |= CpuInfo::SSE4_1;
   if (features_ECX[20]) *hardware_flags |= CpuInfo::SSE4_2;
   if (features_ECX[23]) *hardware_flags |= CpuInfo::POPCNT;
-  if (features_ECX[23]) *hardware_flags |= CpuInfo::AVX;
+  if (features_ECX[28]) *hardware_flags |= CpuInfo::AVX;
 
   // cpuid with EAX=7, ECX=0: Extended Features
   register_EAX_id = 7;
