Daniel Jewell created ARROW-10992:
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Summary: [C++] Arrow Cmake/-march compile flags conflict with
Intel compiler (icc/icpc)
Key: ARROW-10992
URL: https://issues.apache.org/jira/browse/ARROW-10992
Project: Apache Arrow
Issue Type: Bug
Components: C++
Affects Versions: 2.0.0
Reporter: Daniel Jewell
Compiler support for Intel ICC/ICPC was added in ARROW-10849
However, there are still a few cases where
{code:java}
-march=<haswell|skylake-avx512>{code}
is being added to C/CXXFLAGS. While this kinda-sorta works, for icc/icpc there
is different set of optimization options (I use " -xCORE-AVX2" typically). The
list of optimization options is quite verbose (well beyond what just the flags
show) and this really needs the eyes of someone who is an expert on just what
exactly happens to the generated code with the specific flags.
Specific warnings:
{code:java}
icpc: command line warning #10121: overriding '-xCORE-AVX2' with
'-march=skylake-avx512'
icpc: command line warning #10121: overriding '-xCORE-AVX2' with
'-march=skylake-avx512'
icpc: command line warning #10006: ignoring unknown option '-mbmi2'
icpc: command line warning #10121: overriding '-xCORE-AVX2' with
'-march=haswell'
icpc: command line warning #10121: overriding '-xCORE-AVX2' with
'-march=haswell'
{code}
The haswell warning appears to come from the compilation of
cpp/src/arrow/util/bpacking_avx2.cc
See:
[https://software.intel.com/content/www/us/en/develop/articles/performance-tools-for-software-developers-intel-compiler-options-for-sse-generation-and-processor-specific-optimizations.html]
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