diff options
Diffstat (limited to 'Eigen/src/Core/arch')
| -rw-r--r-- | Eigen/src/Core/arch/SSE/TypeCasting.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Eigen/src/Core/arch/SSE/TypeCasting.h b/Eigen/src/Core/arch/SSE/TypeCasting.h index e75df2bfa..1f01d3c28 100644 --- a/Eigen/src/Core/arch/SSE/TypeCasting.h +++ b/Eigen/src/Core/arch/SSE/TypeCasting.h @@ -70,7 +70,16 @@ template<> EIGEN_STRONG_INLINE Packet2d pcast<Packet4f, Packet2d>(const Packet4f } template<> EIGEN_STRONG_INLINE Packet2l pcast<Packet2d, Packet2l>(const Packet2d& a) { + // using a[1]/a[0] to get high/low 64 bit from __m128d is faster than _mm_cvtsd_f64() ,but + // it will trigger the bug report at https://gitlab.com/libeigen/eigen/-/issues/1997 since the + // a[index] ops was not supported by MSVC compiler(supported by gcc). +#if EIGEN_COMP_MSVC + return _mm_set_epi64x(int64_t(_mm_cvtsd_f64(_mm_unpackhi_pd(a,a))), int64_t(_mm_cvtsd_f64(a))); +#elif ((defined EIGEN_VECTORIZE_AVX) && (EIGEN_COMP_GNUC_STRICT || EIGEN_COMP_MINGW) && (__GXX_ABI_VERSION < 1004)) || EIGEN_OS_QNX + return _mm_set_epi64x(int64_t(a.m_val[1]), int64_t(a.m_val[0])); +#else return _mm_set_epi64x(int64_t(a[1]), int64_t(a[0])); +#endif } template <> |