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| author |  Gael Guennebaud <g.gael@free.fr> | 2016-11-22 21:57:52 +0100 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2016-11-22 21:57:52 +0100 |
| commit | 74637fa4e39afc0c6784588e9545b454bb5ea407 (patch) | |
| tree | cc2f72d895da1b3ccb256ead1e46186594f5172d /Eigen | |
| parent | 178c084856003f1cfd3020615ab98230d9520a80 (diff) | |
Optimize predux<Packet8f> (AVX)
Diffstat (limited to 'Eigen')
| -rw-r--r-- | Eigen/src/Core/arch/AVX/PacketMath.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Eigen/src/Core/arch/AVX/PacketMath.h b/Eigen/src/Core/arch/AVX/PacketMath.h index 190e9a42b..58b5dc5ba 100644 --- a/Eigen/src/Core/arch/AVX/PacketMath.h +++ b/Eigen/src/Core/arch/AVX/PacketMath.h @@ -395,9 +395,7 @@ template<> EIGEN_STRONG_INLINE Packet4d preduxp<Packet4d>(const Packet4d* vecs) template<> EIGEN_STRONG_INLINE float predux<Packet8f>(const Packet8f& a) { - Packet8f tmp0 = _mm256_hadd_ps(a,_mm256_permute2f128_ps(a,a,1)); - tmp0 = _mm256_hadd_ps(tmp0,tmp0); - return pfirst(_mm256_hadd_ps(tmp0, tmp0)); + return predux(_mm_add_ps(_mm256_castps256_ps128(a),_mm256_extractf128_ps(a,1))); } template<> EIGEN_STRONG_INLINE double predux<Packet4d>(const Packet4d& a) { |