Tests fail to build because no-SSE options are used

[yurivict]

===>  Testing for vc-1.4.4
-- Detected Compiler: Clang 16.0.6
-- Detected CPU: generic
-- Configuring done (0.1s)
-- Generating done (0.0s)
-- Build files have been written to: /usr/ports/devel/vc/work/.build
[  1% 7/72] /usr/local/libexec/ccache/c++ -DCOMPILE_FOR_UNIT_TESTS -DHAVE_CXX_ABI_H -DTESTDATA_DIR=\"/usr/ports/devel/vc/work/Vc-1.4.4/tests/testdata/\" -I/usr/ports/devel/vc/work/Vc-1.4.4 -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -std=c++14 -ftemplate-depth=128 -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -O2 -pipe -fstack-protector-strong -fno-strict-aliasing   -DNDEBUG -Wno-local-type-template-args -Wno-unnamed-type-template-args -ffp-contract=fast -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4a -mno-avx -mno-fma -mno-bmi2 -mno-avx2 -mno-xop -mno-fma4 -mno-avx512f -mno-avx512vl -mno-avx512pf -mno-avx512er -mno-avx512cd -mno-avx512dq -mno-avx512bw -mno-avx512ifma -mno-avx512vbmi -mfpmath=sse -DVc_IMPL=Scalar -MD -MT tests/CMakeFiles/implicit_type_conversion_scalar.dir/implicit_type_conversion.cpp.o -MF tests/CMakeFiles/implicit_type_conversion_scalar.dir/implicit_type_conversion.cpp.o.d -o tests/CMakeFiles/implicit_type_conversion_scalar.dir/implicit_type_conversion.cpp.o -c /usr/ports/devel/vc/work/Vc-1.4.4/tests/implicit_type_conversion.cpp
[  2% 8/72] : && /usr/local/libexec/ccache/c++ -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -std=c++14 -ftemplate-depth=128 -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -O2 -pipe -fstack-protector-strong -fno-strict-aliasing   -DNDEBUG -fstack-protector-strong tests/CMakeFiles/implicit_type_conversion_scalar.dir/implicit_type_conversion.cpp.o -o tests/implicit_type_conversion_scalar  libVc.a && :
[  4% 9/72] /usr/local/libexec/ccache/c++ -DCOMPILE_FOR_UNIT_TESTS -DHAVE_CXX_ABI_H -DTESTDATA_DIR=\"/usr/ports/devel/vc/work/Vc-1.4.4/tests/testdata/\" -I/usr/ports/devel/vc/work/Vc-1.4.4 -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -std=c++14 -ftemplate-depth=128 -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -O2 -pipe -fstack-protector-strong -fno-strict-aliasing   -DNDEBUG -Wno-local-type-template-args -Wno-unnamed-type-template-args -ffp-contract=fast -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4a -mno-avx -mno-fma -mno-bmi2 -mno-avx2 -mno-xop -mno-fma4 -mno-avx512f -mno-avx512vl -mno-avx512pf -mno-avx512er -mno-avx512cd -mno-avx512dq -mno-avx512bw -mno-avx512ifma -mno-avx512vbmi -mfpmath=sse -DVc_IMPL=Scalar -MD -MT tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o -MF tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o.d -o tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o -c /usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp
FAILED: tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o 
/usr/local/libexec/ccache/c++ -DCOMPILE_FOR_UNIT_TESTS -DHAVE_CXX_ABI_H -DTESTDATA_DIR=\"/usr/ports/devel/vc/work/Vc-1.4.4/tests/testdata/\" -I/usr/ports/devel/vc/work/Vc-1.4.4 -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -std=c++14 -ftemplate-depth=128 -Wno-tautological-constant-out-of-range-compare -Wno-tautological-compare -O2 -pipe -fstack-protector-strong -fno-strict-aliasing   -DNDEBUG -Wno-local-type-template-args -Wno-unnamed-type-template-args -ffp-contract=fast -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4a -mno-avx -mno-fma -mno-bmi2 -mno-avx2 -mno-xop -mno-fma4 -mno-avx512f -mno-avx512vl -mno-avx512pf -mno-avx512er -mno-avx512cd -mno-avx512dq -mno-avx512bw -mno-avx512ifma -mno-avx512vbmi -mfpmath=sse -DVc_IMPL=Scalar -MD -MT tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o -MF tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o.d -o tests/CMakeFiles/simdize_scalar.dir/simdize.cpp.o -c /usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp
/usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp:627:1: error: SSE2 register return with SSE2 disabled
TEST(copy_simdized_objects)
^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/virtest/vir/test.h:1329:21: note: expanded from macro 'TEST'
#define TEST(name_) REAL_TEST(name_)
                    ^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/virtest/vir/test.h:1302:25: note: expanded from macro 'REAL_TEST'
  void Tests::name_##_::run()
                        ^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp:627:1: error: SSE2 register return with SSE2 disabled
/usr/ports/devel/vc/work/Vc-1.4.4/tests/virtest/vir/test.h:1329:21: note: expanded from macro 'TEST'
#define TEST(name_) REAL_TEST(name_)
                    ^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/virtest/vir/test.h:1302:25: note: expanded from macro 'REAL_TEST'
  void Tests::name_##_::run()
                        ^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp:627:1: error: SSE2 register return with SSE2 disabled
/usr/ports/devel/vc/work/Vc-1.4.4/tests/virtest/vir/test.h:1329:21: note: expanded from macro 'TEST'
#define TEST(name_) REAL_TEST(name_)
                    ^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/virtest/vir/test.h:1302:25: note: expanded from macro 'REAL_TEST'
  void Tests::name_##_::run()
                        ^
/usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp:650:37: error: SSE2 register return with SSE2 disabled
template <> std::tuple<double, int> create<std::tuple<double, int>>(int x)
                                    ^
In file included from /usr/ports/devel/vc/work/Vc-1.4.4/tests/simdize.cpp:29:
/usr/ports/devel/vc/work/Vc-1.4.4/tests/unittest.h:131:31: error: SSE2 register return with SSE2 disabled
    static inline common_type ulp_distance_signed(const common_type &a,
                              ^

Version: 1.4.4
FreeBSD 13.2

[Axel-Naumann]

Does this mean it's a compiler bug or that compilers don't survive without SSE2 anymore? Can you reproduce this outside of VC, with a function returning a struct?