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Fix the #issue1997 and #issue1991 bug triggered by unsupport a[index](type a: __i28d) ops with MSVC compiler

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Guoqiang QI 2020-09-21 15:49:00 +00:00 committed by Rasmus Munk Larsen
parent 493a7c773c
commit 821702e771
1 changed files with 9 additions and 0 deletions
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9
Eigen/src/Core/arch/SSE/TypeCasting.h
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@ -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 <>