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Fix build breakage with MSVC 2019, which does not support MMX intrinsics for 64 bit builds, see:

Browse Source 
https://stackoverflow.com/questions/60933486/mmx-intrinsics-like-mm-cvtpd-pi32-not-found-with-msvc-2019-for-64bit-targets-c

Instead use the equivalent SSE2 intrinsics.
This commit is contained in:
Rasmus Munk Larsen 2020-10-01 12:37:55 -07:00
parent 3b445d9bf2
commit 9078f47cd6
1 changed files with 3 additions and 4 deletions
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7
Eigen/src/Core/arch/SSE/PacketMath.h
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@ -769,12 +769,11 @@ template<> EIGEN_STRONG_INLINE Packet4f pldexp<Packet4f>(const Packet4f& a, cons
template<> EIGEN_STRONG_INLINE Packet2d pldexp<Packet2d>(const Packet2d& a, const Packet2d& exponent) {
const Packet2d cst_1023 = pset1<Packet2d>(1023.0);
// Add exponent offset.
__m64 ei = _mm_cvtpd_pi32(padd(exponent, cst_1023));
Packet4i ei = _mm_cvtpd_epi32(padd(exponent, cst_1023));
// Convert to exponents to int64 and swizzle to the low-order 32 bits.
__m128i el = _mm_set_epi64(_mm_setzero_si64(), ei);
el = vec4i_swizzle1(el, 0, 3, 1, 3);
ei = vec4i_swizzle1(ei, 0, 3, 1, 3);
// return a * 2^exponent
return pmul(a, _mm_castsi128_pd(_mm_slli_epi64(el, 52)));
return pmul(a, _mm_castsi128_pd(_mm_slli_epi64(ei, 52)));
}
// with AVX, the default implementations based on pload1 are faster