Fix test_cppcontrib_sa_decode.cpp #2388
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This PR contains below changes:
faiss
is written in C++11, butfaiss/cppcontrib/SaDecodeKernels-avx2-inl.h
and the test use some C++17 features. This PR rewrites these codes to make them independent to C++17.faiss_test
faiss_test
is compiled without-mavx2
even if-DFAISS_OPT_LEVEL=avx2
, sotests/test_cppcontrib_sa_decode.cpp
hasn't checkedfaiss/cppcontrib/SaDecodeKernels-avx2-inl.h
at all . This PR adds-mavx2
tofaiss_test
if-DFAISS_OPT_LEVEL=avx2
, so nowtests/test_cppcontrib_sa_decode.cpp
confirmsfaiss/cppcontrib/SaDecodeKernels-avx2-inl.h
if-DFAISS_OPT_LEVEL=avx2
, and doesfaiss/cppcontrib/SaDecodeKernels-inl.h
if not-DFAISS_OPT_LEVEL=avx2
.