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Enable FMA with MSVC (through /arch:AVX2). To make this possible, I also has to turn the #warning regarding AVX512-FMA to a #error.

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Gael Guennebaud
2018-12-07 15:14:50 +01:00
parent f233c6194d
commit 7b6d0ff1f6
4 changed files with 22 additions and 7 deletions
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2
Eigen/src/Core/arch/AVX/PacketMath.h
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@@ -181,7 +181,7 @@ template<> EIGEN_STRONG_INLINE Packet8i pdiv<Packet8i>(const Packet8i& /*a*/, co
return pset1<Packet8i>(0);
}
#ifdef __FMA__
#ifdef EIGEN_VECTORIZE_FMA
template<> EIGEN_STRONG_INLINE Packet8f pmadd(const Packet8f& a, const Packet8f& b, const Packet8f& c) {
#if ( (EIGEN_COMP_GNUC_STRICT && EIGEN_COMP_GNUC<80) || (EIGEN_COMP_CLANG) )
// Clang stupidly generates a vfmadd213ps instruction plus some vmovaps on registers,