diff options
| author |  Gael Guennebaud <g.gael@free.fr> | 2019-01-30 11:49:06 +0100 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2019-01-30 11:49:06 +0100 |
| commit | 3775926bbae69c23584dd9e6acdbe20ee6ac7050 (patch) | |
| tree | 0e1e0af0de488e8e96cd0b9785b8ee32fc2b7377 /Eigen/src/Core/products | |
| parent | be5b0f664ab1481e74d72e01d4f9172cf927b221 (diff) | |
ARM64 & GEBP: add specialization for double +30% speed up
Diffstat (limited to 'Eigen/src/Core/products')
| -rw-r--r-- | Eigen/src/Core/products/GeneralBlockPanelKernel.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/Eigen/src/Core/products/GeneralBlockPanelKernel.h b/Eigen/src/Core/products/GeneralBlockPanelKernel.h index dea8c94eb..c8c3d69cc 100644 --- a/Eigen/src/Core/products/GeneralBlockPanelKernel.h +++ b/Eigen/src/Core/products/GeneralBlockPanelKernel.h @@ -1050,6 +1050,65 @@ struct gebp_traits <float, float, false, false,Architecture::NEON> } }; + +template<> +struct gebp_traits <double, double, false, false,Architecture::NEON> + : gebp_traits<double,double,false,false,Architecture::Generic> +{ + typedef double RhsPacket; + + struct RhsPacketx4 { + float64x2_t B_0, B_1; + }; + + EIGEN_STRONG_INLINE void loadRhs(const RhsScalar* b, RhsPacket& dest) const + { + dest = *b; + } + + EIGEN_STRONG_INLINE void loadRhs(const RhsScalar* b, RhsPacketx4& dest) const + { + dest.B_0 = vld1q_f64(b); + dest.B_1 = vld1q_f64(b+2); + } + + EIGEN_STRONG_INLINE void updateRhs(const RhsScalar* b, RhsPacket& dest) const + { + loadRhs(b,dest); + } + + EIGEN_STRONG_INLINE void updateRhs(const RhsScalar* b, RhsPacketx4& dest) const + {} + + EIGEN_STRONG_INLINE void loadRhsQuad(const RhsScalar* b, RhsPacket& dest) const + { + loadRhs(b,dest); + } + + EIGEN_STRONG_INLINE void madd(const LhsPacket& a, const RhsPacket& b, AccPacket& c, RhsPacket& /*tmp*/, const FixedInt<0>&) const + { + c = vfmaq_n_f64(c, a, b); + } + + template<int LaneID> + EIGEN_STRONG_INLINE void madd(const LhsPacket& a, const RhsPacketx4& b, AccPacket& c, RhsPacket& /*tmp*/, const FixedInt<LaneID>&) const + { + #if EIGEN_COMP_GNUC_STRICT + // workaround gcc issue https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89101 + // vfmaq_laneq_f64 is implemented through a costly dup + if(LaneID==0) asm("fmla %0.2d, %1.2d, %2.d[0]\n" : "+w" (c) : "w" (a), "w" (b.B_0) : ); + else if(LaneID==1) asm("fmla %0.2d, %1.2d, %2.d[1]\n" : "+w" (c) : "w" (a), "w" (b.B_0) : ); + else if(LaneID==2) asm("fmla %0.2d, %1.2d, %2.d[0]\n" : "+w" (c) : "w" (a), "w" (b.B_1) : ); + else if(LaneID==3) asm("fmla %0.2d, %1.2d, %2.d[1]\n" : "+w" (c) : "w" (a), "w" (b.B_1) : ); + #else + if(LaneID==0) c = vfmaq_laneq_f64(c, a, b.B_0, 0); + else if(LaneID==1) c = vfmaq_laneq_f64(c, a, b.B_0, 1); + else if(LaneID==2) c = vfmaq_laneq_f64(c, a, b.B_1, 0); + else if(LaneID==3) c = vfmaq_laneq_f64(c, a, b.B_1, 1); + #endif + } +}; + #endif /* optimized General packed Block * packed Panel product kernel |