diff options
Diffstat (limited to 'Eigen/src/Core/arch/MSA/PacketMath.h')
| -rw-r--r-- | Eigen/src/Core/arch/MSA/PacketMath.h | 1233 |
1 files changed, 1233 insertions, 0 deletions
diff --git a/Eigen/src/Core/arch/MSA/PacketMath.h b/Eigen/src/Core/arch/MSA/PacketMath.h new file mode 100644 index 000000000..afe8f3375 --- /dev/null +++ b/Eigen/src/Core/arch/MSA/PacketMath.h @@ -0,0 +1,1233 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2018 Wave Computing, Inc. +// Written by: +// Chris Larsen +// Alexey Frunze (afrunze@wavecomp.com) +// +// This Source Code Form is subject to the terms of the Mozilla +// Public License v. 2.0. If a copy of the MPL was not distributed +// with this file, You can obtain one at http://mozilla.org/MPL/2.0/. + +#ifndef EIGEN_PACKET_MATH_MSA_H +#define EIGEN_PACKET_MATH_MSA_H + +#include <iostream> +#include <string> + +namespace Eigen { + +namespace internal { + +#ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD +#define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 8 +#endif + +#ifndef EIGEN_HAS_SINGLE_INSTRUCTION_MADD +#define EIGEN_HAS_SINGLE_INSTRUCTION_MADD +#endif + +#ifndef EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS +#define EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS 32 +#endif + +#if 0 +#define EIGEN_MSA_DEBUG \ + static bool firstTime = true; \ + do { \ + if (firstTime) { \ + std::cout << __FILE__ << ':' << __LINE__ << ':' << __FUNCTION__ << std::endl; \ + firstTime = false; \ + } \ + } while (0) +#else +#define EIGEN_MSA_DEBUG +#endif + +#define EIGEN_MSA_SHF_I8(a, b, c, d) (((d) << 6) | ((c) << 4) | ((b) << 2) | (a)) + +typedef v4f32 Packet4f; +typedef v4i32 Packet4i; +typedef v4u32 Packet4ui; + +#define _EIGEN_DECLARE_CONST_Packet4f(NAME, X) const Packet4f p4f_##NAME = { X, X, X, X } +#define _EIGEN_DECLARE_CONST_Packet4i(NAME, X) const Packet4i p4i_##NAME = { X, X, X, X } +#define _EIGEN_DECLARE_CONST_Packet4ui(NAME, X) const Packet4ui p4ui_##NAME = { X, X, X, X } + +inline std::ostream& operator<<(std::ostream& os, const Packet4f& value) { + os << "[ " << value[0] << ", " << value[1] << ", " << value[2] << ", " << value[3] << " ]"; + return os; +} + +inline std::ostream& operator<<(std::ostream& os, const Packet4i& value) { + os << "[ " << value[0] << ", " << value[1] << ", " << value[2] << ", " << value[3] << " ]"; + return os; +} + +inline std::ostream& operator<<(std::ostream& os, const Packet4ui& value) { + os << "[ " << value[0] << ", " << value[1] << ", " << value[2] << ", " << value[3] << " ]"; + return os; +} + +template <> +struct packet_traits<float> : default_packet_traits { + typedef Packet4f type; + typedef Packet4f half; // Packet2f intrinsics not implemented yet + enum { + Vectorizable = 1, + AlignedOnScalar = 1, + size = 4, + HasHalfPacket = 0, // Packet2f intrinsics not implemented yet + // FIXME check the Has* + HasDiv = 1, + HasSin = EIGEN_FAST_MATH, + HasCos = EIGEN_FAST_MATH, + HasTanh = EIGEN_FAST_MATH, + HasErf = EIGEN_FAST_MATH, + HasLog = 1, + HasExp = 1, + HasSqrt = 1, + HasRsqrt = 1, + HasRound = 1, + HasFloor = 1, + HasCeil = 1, + HasBlend = 1 + }; +}; + +template <> +struct packet_traits<int32_t> : default_packet_traits { + typedef Packet4i type; + typedef Packet4i half; // Packet2i intrinsics not implemented yet + enum { + Vectorizable = 1, + AlignedOnScalar = 1, + size = 4, + HasHalfPacket = 0, // Packet2i intrinsics not implemented yet + // FIXME check the Has* + HasDiv = 1, + HasBlend = 1 + }; +}; + +template <> +struct unpacket_traits<Packet4f> { + typedef float type; + enum { size = 4, alignment = Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false }; + typedef Packet4f half; +}; + +template <> +struct unpacket_traits<Packet4i> { + typedef int32_t type; + enum { size = 4, alignment = Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false }; + typedef Packet4i half; +}; + +template <> +EIGEN_STRONG_INLINE Packet4f pset1<Packet4f>(const float& from) { + EIGEN_MSA_DEBUG; + + Packet4f v = { from, from, from, from }; + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet4i pset1<Packet4i>(const int32_t& from) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fill_w(from); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pload1<Packet4f>(const float* from) { + EIGEN_MSA_DEBUG; + + float f = *from; + Packet4f v = { f, f, f, f }; + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet4i pload1<Packet4i>(const int32_t* from) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fill_w(*from); +} + +template <> +EIGEN_STRONG_INLINE Packet4f padd<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fadd_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i padd<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_addv_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f plset<Packet4f>(const float& a) { + EIGEN_MSA_DEBUG; + + static const Packet4f countdown = { 0.0f, 1.0f, 2.0f, 3.0f }; + return padd(pset1<Packet4f>(a), countdown); +} + +template <> +EIGEN_STRONG_INLINE Packet4i plset<Packet4i>(const int32_t& a) { + EIGEN_MSA_DEBUG; + + static const Packet4i countdown = { 0, 1, 2, 3 }; + return padd(pset1<Packet4i>(a), countdown); +} + +template <> +EIGEN_STRONG_INLINE Packet4f psub<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fsub_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i psub<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_subv_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pnegate(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + return (Packet4f)__builtin_msa_bnegi_w((v4u32)a, 31); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pnegate(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_addvi_w((v4i32)__builtin_msa_nori_b((v16u8)a, 0), 1); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pconj(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + return a; +} + +template <> +EIGEN_STRONG_INLINE Packet4i pconj(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + return a; +} + +template <> +EIGEN_STRONG_INLINE Packet4f pmul<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fmul_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pmul<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_mulv_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pdiv<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fdiv_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pdiv<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_div_s_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pmadd(const Packet4f& a, const Packet4f& b, const Packet4f& c) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fmadd_w(c, a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pmadd(const Packet4i& a, const Packet4i& b, const Packet4i& c) { + EIGEN_MSA_DEBUG; + + // Use "asm" construct to avoid __builtin_msa_maddv_w GNU C bug. + Packet4i value = c; + __asm__("maddv.w %w[value], %w[a], %w[b]\n" + // Outputs + : [value] "+f"(value) + // Inputs + : [a] "f"(a), [b] "f"(b)); + return value; +} + +template <> +EIGEN_STRONG_INLINE Packet4f pand<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return (Packet4f)__builtin_msa_and_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pand<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return (Packet4i)__builtin_msa_and_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f por<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return (Packet4f)__builtin_msa_or_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i por<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return (Packet4i)__builtin_msa_or_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pxor<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return (Packet4f)__builtin_msa_xor_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pxor<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return (Packet4i)__builtin_msa_xor_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pandnot<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + + return pand(a, (Packet4f)__builtin_msa_xori_b((v16u8)b, 255)); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pandnot<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return pand(a, (Packet4i)__builtin_msa_xori_b((v16u8)b, 255)); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pmin<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + // This prefers numbers to NaNs. + return __builtin_msa_fmin_w(a, b); +#else + // This prefers NaNs to numbers. + Packet4i aNaN = __builtin_msa_fcun_w(a, a); + Packet4i aMinOrNaN = por(__builtin_msa_fclt_w(a, b), aNaN); + return (Packet4f)__builtin_msa_bsel_v((v16u8)aMinOrNaN, (v16u8)b, (v16u8)a); +#endif +} + +template <> +EIGEN_STRONG_INLINE Packet4i pmin<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_min_s_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pmax<Packet4f>(const Packet4f& a, const Packet4f& b) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + // This prefers numbers to NaNs. + return __builtin_msa_fmax_w(a, b); +#else + // This prefers NaNs to numbers. + Packet4i aNaN = __builtin_msa_fcun_w(a, a); + Packet4i aMaxOrNaN = por(__builtin_msa_fclt_w(b, a), aNaN); + return (Packet4f)__builtin_msa_bsel_v((v16u8)aMaxOrNaN, (v16u8)b, (v16u8)a); +#endif +} + +template <> +EIGEN_STRONG_INLINE Packet4i pmax<Packet4i>(const Packet4i& a, const Packet4i& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_max_s_w(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pload<Packet4f>(const float* from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_ALIGNED_LOAD return (Packet4f)__builtin_msa_ld_w(const_cast<float*>(from), 0); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pload<Packet4i>(const int32_t* from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_ALIGNED_LOAD return __builtin_msa_ld_w(const_cast<int32_t*>(from), 0); +} + +template <> +EIGEN_STRONG_INLINE Packet4f ploadu<Packet4f>(const float* from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_LOAD return (Packet4f)__builtin_msa_ld_w(const_cast<float*>(from), 0); +} + +template <> +EIGEN_STRONG_INLINE Packet4i ploadu<Packet4i>(const int32_t* from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_LOAD return (Packet4i)__builtin_msa_ld_w(const_cast<int32_t*>(from), 0); +} + +template <> +EIGEN_STRONG_INLINE Packet4f ploaddup<Packet4f>(const float* from) { + EIGEN_MSA_DEBUG; + + float f0 = from[0], f1 = from[1]; + Packet4f v0 = { f0, f0, f0, f0 }; + Packet4f v1 = { f1, f1, f1, f1 }; + return (Packet4f)__builtin_msa_ilvr_d((v2i64)v1, (v2i64)v0); +} + +template <> +EIGEN_STRONG_INLINE Packet4i ploaddup<Packet4i>(const int32_t* from) { + EIGEN_MSA_DEBUG; + + int32_t i0 = from[0], i1 = from[1]; + Packet4i v0 = { i0, i0, i0, i0 }; + Packet4i v1 = { i1, i1, i1, i1 }; + return (Packet4i)__builtin_msa_ilvr_d((v2i64)v1, (v2i64)v0); +} + +template <> +EIGEN_STRONG_INLINE void pstore<float>(float* to, const Packet4f& from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_ALIGNED_STORE __builtin_msa_st_w((Packet4i)from, to, 0); +} + +template <> +EIGEN_STRONG_INLINE void pstore<int32_t>(int32_t* to, const Packet4i& from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_ALIGNED_STORE __builtin_msa_st_w(from, to, 0); +} + +template <> +EIGEN_STRONG_INLINE void pstoreu<float>(float* to, const Packet4f& from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_STORE __builtin_msa_st_w((Packet4i)from, to, 0); +} + +template <> +EIGEN_STRONG_INLINE void pstoreu<int32_t>(int32_t* to, const Packet4i& from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_STORE __builtin_msa_st_w(from, to, 0); +} + +template <> +EIGEN_DEVICE_FUNC inline Packet4f pgather<float, Packet4f>(const float* from, Index stride) { + EIGEN_MSA_DEBUG; + + float f = *from; + Packet4f v = { f, f, f, f }; + v[1] = from[stride]; + v[2] = from[2 * stride]; + v[3] = from[3 * stride]; + return v; +} + +template <> +EIGEN_DEVICE_FUNC inline Packet4i pgather<int32_t, Packet4i>(const int32_t* from, Index stride) { + EIGEN_MSA_DEBUG; + + int32_t i = *from; + Packet4i v = { i, i, i, i }; + v[1] = from[stride]; + v[2] = from[2 * stride]; + v[3] = from[3 * stride]; + return v; +} + +template <> +EIGEN_DEVICE_FUNC inline void pscatter<float, Packet4f>(float* to, const Packet4f& from, + Index stride) { + EIGEN_MSA_DEBUG; + + *to = from[0]; + to += stride; + *to = from[1]; + to += stride; + *to = from[2]; + to += stride; + *to = from[3]; +} + +template <> +EIGEN_DEVICE_FUNC inline void pscatter<int32_t, Packet4i>(int32_t* to, const Packet4i& from, + Index stride) { + EIGEN_MSA_DEBUG; + + *to = from[0]; + to += stride; + *to = from[1]; + to += stride; + *to = from[2]; + to += stride; + *to = from[3]; +} + +template <> +EIGEN_STRONG_INLINE void prefetch<float>(const float* addr) { + EIGEN_MSA_DEBUG; + + __builtin_prefetch(addr); +} + +template <> +EIGEN_STRONG_INLINE void prefetch<int32_t>(const int32_t* addr) { + EIGEN_MSA_DEBUG; + + __builtin_prefetch(addr); +} + +template <> +EIGEN_STRONG_INLINE float pfirst<Packet4f>(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + return a[0]; +} + +template <> +EIGEN_STRONG_INLINE int32_t pfirst<Packet4i>(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + return a[0]; +} + +template <> +EIGEN_STRONG_INLINE Packet4f preverse(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + return (Packet4f)__builtin_msa_shf_w((v4i32)a, EIGEN_MSA_SHF_I8(3, 2, 1, 0)); +} + +template <> +EIGEN_STRONG_INLINE Packet4i preverse(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_shf_w(a, EIGEN_MSA_SHF_I8(3, 2, 1, 0)); +} + +template <> +EIGEN_STRONG_INLINE Packet4f pabs(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + return (Packet4f)__builtin_msa_bclri_w((v4u32)a, 31); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pabs(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + Packet4i zero = __builtin_msa_ldi_w(0); + return __builtin_msa_add_a_w(zero, a); +} + +template <> +EIGEN_STRONG_INLINE float predux<Packet4f>(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + Packet4f s = padd(a, (Packet4f)__builtin_msa_shf_w((v4i32)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1))); + s = padd(s, (Packet4f)__builtin_msa_shf_w((v4i32)s, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); + return s[0]; +} + + +template <> +EIGEN_STRONG_INLINE int32_t predux<Packet4i>(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + Packet4i s = padd(a, __builtin_msa_shf_w(a, EIGEN_MSA_SHF_I8(2, 3, 0, 1))); + s = padd(s, __builtin_msa_shf_w(s, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); + return s[0]; +} + +// Other reduction functions: +// mul +template <> +EIGEN_STRONG_INLINE float predux_mul<Packet4f>(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + Packet4f p = pmul(a, (Packet4f)__builtin_msa_shf_w((v4i32)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1))); + p = pmul(p, (Packet4f)__builtin_msa_shf_w((v4i32)p, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); + return p[0]; +} + +template <> +EIGEN_STRONG_INLINE int32_t predux_mul<Packet4i>(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + Packet4i p = pmul(a, __builtin_msa_shf_w(a, EIGEN_MSA_SHF_I8(2, 3, 0, 1))); + p = pmul(p, __builtin_msa_shf_w(p, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); + return p[0]; +} + +// min +template <> +EIGEN_STRONG_INLINE float predux_min<Packet4f>(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + // Swap 64-bit halves of a. + Packet4f swapped = (Packet4f)__builtin_msa_shf_w((Packet4i)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1)); +#if !EIGEN_FAST_MATH + // Detect presence of NaNs from pairs a[0]-a[2] and a[1]-a[3] as two 32-bit + // masks of all zeroes/ones in low 64 bits. + v16u8 unord = (v16u8)__builtin_msa_fcun_w(a, swapped); + // Combine the two masks into one: 64 ones if no NaNs, otherwise 64 zeroes. + unord = (v16u8)__builtin_msa_ceqi_d((v2i64)unord, 0); +#endif + // Continue with min computation. + Packet4f v = __builtin_msa_fmin_w(a, swapped); + v = __builtin_msa_fmin_w( + v, (Packet4f)__builtin_msa_shf_w((Packet4i)v, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); +#if !EIGEN_FAST_MATH + // Based on the mask select between v and 4 qNaNs. + v16u8 qnans = (v16u8)__builtin_msa_fill_w(0x7FC00000); + v = (Packet4f)__builtin_msa_bsel_v(unord, qnans, (v16u8)v); +#endif + return v[0]; +} + +template <> +EIGEN_STRONG_INLINE int32_t predux_min<Packet4i>(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + Packet4i m = pmin(a, __builtin_msa_shf_w(a, EIGEN_MSA_SHF_I8(2, 3, 0, 1))); + m = pmin(m, __builtin_msa_shf_w(m, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); + return m[0]; +} + +// max +template <> +EIGEN_STRONG_INLINE float predux_max<Packet4f>(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + // Swap 64-bit halves of a. + Packet4f swapped = (Packet4f)__builtin_msa_shf_w((Packet4i)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1)); +#if !EIGEN_FAST_MATH + // Detect presence of NaNs from pairs a[0]-a[2] and a[1]-a[3] as two 32-bit + // masks of all zeroes/ones in low 64 bits. + v16u8 unord = (v16u8)__builtin_msa_fcun_w(a, swapped); + // Combine the two masks into one: 64 ones if no NaNs, otherwise 64 zeroes. + unord = (v16u8)__builtin_msa_ceqi_d((v2i64)unord, 0); +#endif + // Continue with max computation. + Packet4f v = __builtin_msa_fmax_w(a, swapped); + v = __builtin_msa_fmax_w( + v, (Packet4f)__builtin_msa_shf_w((Packet4i)v, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); +#if !EIGEN_FAST_MATH + // Based on the mask select between v and 4 qNaNs. + v16u8 qnans = (v16u8)__builtin_msa_fill_w(0x7FC00000); + v = (Packet4f)__builtin_msa_bsel_v(unord, qnans, (v16u8)v); +#endif + return v[0]; +} + +template <> +EIGEN_STRONG_INLINE int32_t predux_max<Packet4i>(const Packet4i& a) { + EIGEN_MSA_DEBUG; + + Packet4i m = pmax(a, __builtin_msa_shf_w(a, EIGEN_MSA_SHF_I8(2, 3, 0, 1))); + m = pmax(m, __builtin_msa_shf_w(m, EIGEN_MSA_SHF_I8(1, 0, 3, 2))); + return m[0]; +} + +inline std::ostream& operator<<(std::ostream& os, const PacketBlock<Packet4f, 4>& value) { + os << "[ " << value.packet[0] << "," << std::endl + << " " << value.packet[1] << "," << std::endl + << " " << value.packet[2] << "," << std::endl + << " " << value.packet[3] << " ]"; + return os; +} + +EIGEN_DEVICE_FUNC inline void ptranspose(PacketBlock<Packet4f, 4>& kernel) { + EIGEN_MSA_DEBUG; + + v4i32 tmp1, tmp2, tmp3, tmp4; + + tmp1 = __builtin_msa_ilvr_w((v4i32)kernel.packet[1], (v4i32)kernel.packet[0]); + tmp2 = __builtin_msa_ilvr_w((v4i32)kernel.packet[3], (v4i32)kernel.packet[2]); + tmp3 = __builtin_msa_ilvl_w((v4i32)kernel.packet[1], (v4i32)kernel.packet[0]); + tmp4 = __builtin_msa_ilvl_w((v4i32)kernel.packet[3], (v4i32)kernel.packet[2]); + + kernel.packet[0] = (Packet4f)__builtin_msa_ilvr_d((v2i64)tmp2, (v2i64)tmp1); + kernel.packet[1] = (Packet4f)__builtin_msa_ilvod_d((v2i64)tmp2, (v2i64)tmp1); + kernel.packet[2] = (Packet4f)__builtin_msa_ilvr_d((v2i64)tmp4, (v2i64)tmp3); + kernel.packet[3] = (Packet4f)__builtin_msa_ilvod_d((v2i64)tmp4, (v2i64)tmp3); +} + +inline std::ostream& operator<<(std::ostream& os, const PacketBlock<Packet4i, 4>& value) { + os << "[ " << value.packet[0] << "," << std::endl + << " " << value.packet[1] << "," << std::endl + << " " << value.packet[2] << "," << std::endl + << " " << value.packet[3] << " ]"; + return os; +} + +EIGEN_DEVICE_FUNC inline void ptranspose(PacketBlock<Packet4i, 4>& kernel) { + EIGEN_MSA_DEBUG; + + v4i32 tmp1, tmp2, tmp3, tmp4; + + tmp1 = __builtin_msa_ilvr_w(kernel.packet[1], kernel.packet[0]); + tmp2 = __builtin_msa_ilvr_w(kernel.packet[3], kernel.packet[2]); + tmp3 = __builtin_msa_ilvl_w(kernel.packet[1], kernel.packet[0]); + tmp4 = __builtin_msa_ilvl_w(kernel.packet[3], kernel.packet[2]); + + kernel.packet[0] = (Packet4i)__builtin_msa_ilvr_d((v2i64)tmp2, (v2i64)tmp1); + kernel.packet[1] = (Packet4i)__builtin_msa_ilvod_d((v2i64)tmp2, (v2i64)tmp1); + kernel.packet[2] = (Packet4i)__builtin_msa_ilvr_d((v2i64)tmp4, (v2i64)tmp3); + kernel.packet[3] = (Packet4i)__builtin_msa_ilvod_d((v2i64)tmp4, (v2i64)tmp3); +} + +template <> +EIGEN_STRONG_INLINE Packet4f psqrt(const Packet4f& a) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fsqrt_w(a); +} + +template <> +EIGEN_STRONG_INLINE Packet4f prsqrt(const Packet4f& a) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + return __builtin_msa_frsqrt_w(a); +#else + Packet4f ones = __builtin_msa_ffint_s_w(__builtin_msa_ldi_w(1)); + return pdiv(ones, psqrt(a)); +#endif +} + +template <> +EIGEN_STRONG_INLINE Packet4f pfloor<Packet4f>(const Packet4f& a) { + Packet4f v = a; + int32_t old_mode, new_mode; + asm volatile( + "cfcmsa %[old_mode], $1\n" + "ori %[new_mode], %[old_mode], 3\n" // 3 = round towards -INFINITY. + "ctcmsa $1, %[new_mode]\n" + "frint.w %w[v], %w[v]\n" + "ctcmsa $1, %[old_mode]\n" + : // outputs + [old_mode] "=r"(old_mode), [new_mode] "=r"(new_mode), + [v] "+f"(v) + : // inputs + : // clobbers + ); + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet4f pceil<Packet4f>(const Packet4f& a) { + Packet4f v = a; + int32_t old_mode, new_mode; + asm volatile( + "cfcmsa %[old_mode], $1\n" + "ori %[new_mode], %[old_mode], 3\n" + "xori %[new_mode], %[new_mode], 1\n" // 2 = round towards +INFINITY. + "ctcmsa $1, %[new_mode]\n" + "frint.w %w[v], %w[v]\n" + "ctcmsa $1, %[old_mode]\n" + : // outputs + [old_mode] "=r"(old_mode), [new_mode] "=r"(new_mode), + [v] "+f"(v) + : // inputs + : // clobbers + ); + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet4f pround<Packet4f>(const Packet4f& a) { + Packet4f v = a; + int32_t old_mode, new_mode; + asm volatile( + "cfcmsa %[old_mode], $1\n" + "ori %[new_mode], %[old_mode], 3\n" + "xori %[new_mode], %[new_mode], 3\n" // 0 = round to nearest, ties to even. + "ctcmsa $1, %[new_mode]\n" + "frint.w %w[v], %w[v]\n" + "ctcmsa $1, %[old_mode]\n" + : // outputs + [old_mode] "=r"(old_mode), [new_mode] "=r"(new_mode), + [v] "+f"(v) + : // inputs + : // clobbers + ); + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet4f pblend(const Selector<4>& ifPacket, const Packet4f& thenPacket, + const Packet4f& elsePacket) { + Packet4ui select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], + ifPacket.select[3] }; + Packet4i mask = __builtin_msa_ceqi_w((Packet4i)select, 0); + return (Packet4f)__builtin_msa_bsel_v((v16u8)mask, (v16u8)thenPacket, (v16u8)elsePacket); +} + +template <> +EIGEN_STRONG_INLINE Packet4i pblend(const Selector<4>& ifPacket, const Packet4i& thenPacket, + const Packet4i& elsePacket) { + Packet4ui select = { ifPacket.select[0], ifPacket.select[1], ifPacket.select[2], + ifPacket.select[3] }; + Packet4i mask = __builtin_msa_ceqi_w((Packet4i)select, 0); + return (Packet4i)__builtin_msa_bsel_v((v16u8)mask, (v16u8)thenPacket, (v16u8)elsePacket); +} + +//---------- double ---------- + +typedef v2f64 Packet2d; +typedef v2i64 Packet2l; +typedef v2u64 Packet2ul; + +#define _EIGEN_DECLARE_CONST_Packet2d(NAME, X) const Packet2d p2d_##NAME = { X, X } +#define _EIGEN_DECLARE_CONST_Packet2l(NAME, X) const Packet2l p2l_##NAME = { X, X } +#define _EIGEN_DECLARE_CONST_Packet2ul(NAME, X) const Packet2ul p2ul_##NAME = { X, X } + +inline std::ostream& operator<<(std::ostream& os, const Packet2d& value) { + os << "[ " << value[0] << ", " << value[1] << " ]"; + return os; +} + +inline std::ostream& operator<<(std::ostream& os, const Packet2l& value) { + os << "[ " << value[0] << ", " << value[1] << " ]"; + return os; +} + +inline std::ostream& operator<<(std::ostream& os, const Packet2ul& value) { + os << "[ " << value[0] << ", " << value[1] << " ]"; + return os; +} + +template <> +struct packet_traits<double> : default_packet_traits { + typedef Packet2d type; + typedef Packet2d half; + enum { + Vectorizable = 1, + AlignedOnScalar = 1, + size = 2, + HasHalfPacket = 0, + // FIXME check the Has* + HasDiv = 1, + HasExp = 1, + HasSqrt = 1, + HasRsqrt = 1, + HasRound = 1, + HasFloor = 1, + HasCeil = 1, + HasBlend = 1 + }; +}; + +template <> +struct unpacket_traits<Packet2d> { + typedef double type; + enum { size = 2, alignment = Aligned16, vectorizable=true, masked_load_available=false, masked_store_available=false }; + typedef Packet2d half; +}; + +template <> +EIGEN_STRONG_INLINE Packet2d pset1<Packet2d>(const double& from) { + EIGEN_MSA_DEBUG; + + Packet2d value = { from, from }; + return value; +} + +template <> +EIGEN_STRONG_INLINE Packet2d padd<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fadd_d(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d plset<Packet2d>(const double& a) { + EIGEN_MSA_DEBUG; + + static const Packet2d countdown = { 0.0, 1.0 }; + return padd(pset1<Packet2d>(a), countdown); +} + +template <> +EIGEN_STRONG_INLINE Packet2d psub<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fsub_d(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pnegate(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + return (Packet2d)__builtin_msa_bnegi_d((v2u64)a, 63); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pconj(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + return a; +} + +template <> +EIGEN_STRONG_INLINE Packet2d pmul<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fmul_d(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pdiv<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fdiv_d(a, b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pmadd(const Packet2d& a, const Packet2d& b, const Packet2d& c) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fmadd_d(c, a, b); +} + +// Logical Operations are not supported for float, so we have to reinterpret casts using MSA +// intrinsics +template <> +EIGEN_STRONG_INLINE Packet2d pand<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return (Packet2d)__builtin_msa_and_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d por<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return (Packet2d)__builtin_msa_or_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pxor<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return (Packet2d)__builtin_msa_xor_v((v16u8)a, (v16u8)b); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pandnot<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + + return pand(a, (Packet2d)__builtin_msa_xori_b((v16u8)b, 255)); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pload<Packet2d>(const double* from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_LOAD return (Packet2d)__builtin_msa_ld_d(const_cast<double*>(from), 0); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pmin<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + // This prefers numbers to NaNs. + return __builtin_msa_fmin_d(a, b); +#else + // This prefers NaNs to numbers. + v2i64 aNaN = __builtin_msa_fcun_d(a, a); + v2i64 aMinOrNaN = por(__builtin_msa_fclt_d(a, b), aNaN); + return (Packet2d)__builtin_msa_bsel_v((v16u8)aMinOrNaN, (v16u8)b, (v16u8)a); +#endif +} + +template <> +EIGEN_STRONG_INLINE Packet2d pmax<Packet2d>(const Packet2d& a, const Packet2d& b) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + // This prefers numbers to NaNs. + return __builtin_msa_fmax_d(a, b); +#else + // This prefers NaNs to numbers. + v2i64 aNaN = __builtin_msa_fcun_d(a, a); + v2i64 aMaxOrNaN = por(__builtin_msa_fclt_d(b, a), aNaN); + return (Packet2d)__builtin_msa_bsel_v((v16u8)aMaxOrNaN, (v16u8)b, (v16u8)a); +#endif +} + +template <> +EIGEN_STRONG_INLINE Packet2d ploadu<Packet2d>(const double* from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_LOAD return (Packet2d)__builtin_msa_ld_d(const_cast<double*>(from), 0); +} + +template <> +EIGEN_STRONG_INLINE Packet2d ploaddup<Packet2d>(const double* from) { + EIGEN_MSA_DEBUG; + + Packet2d value = { *from, *from }; + return value; +} + +template <> +EIGEN_STRONG_INLINE void pstore<double>(double* to, const Packet2d& from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_ALIGNED_STORE __builtin_msa_st_d((v2i64)from, to, 0); +} + +template <> +EIGEN_STRONG_INLINE void pstoreu<double>(double* to, const Packet2d& from) { + EIGEN_MSA_DEBUG; + + EIGEN_DEBUG_UNALIGNED_STORE __builtin_msa_st_d((v2i64)from, to, 0); +} + +template <> +EIGEN_DEVICE_FUNC inline Packet2d pgather<double, Packet2d>(const double* from, Index stride) { + EIGEN_MSA_DEBUG; + + Packet2d value; + value[0] = *from; + from += stride; + value[1] = *from; + return value; +} + +template <> +EIGEN_DEVICE_FUNC inline void pscatter<double, Packet2d>(double* to, const Packet2d& from, + Index stride) { + EIGEN_MSA_DEBUG; + + *to = from[0]; + to += stride; + *to = from[1]; +} + +template <> +EIGEN_STRONG_INLINE void prefetch<double>(const double* addr) { + EIGEN_MSA_DEBUG; + + __builtin_prefetch(addr); +} + +template <> +EIGEN_STRONG_INLINE double pfirst<Packet2d>(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + return a[0]; +} + +template <> +EIGEN_STRONG_INLINE Packet2d preverse(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + return (Packet2d)__builtin_msa_shf_w((v4i32)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1)); +} + +template <> +EIGEN_STRONG_INLINE Packet2d pabs(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + return (Packet2d)__builtin_msa_bclri_d((v2u64)a, 63); +} + +template <> +EIGEN_STRONG_INLINE double predux<Packet2d>(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + Packet2d s = padd(a, preverse(a)); + return s[0]; +} + +// Other reduction functions: +// mul +template <> +EIGEN_STRONG_INLINE double predux_mul<Packet2d>(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + Packet2d p = pmul(a, preverse(a)); + return p[0]; +} + +// min +template <> +EIGEN_STRONG_INLINE double predux_min<Packet2d>(const Packet2d& a) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + Packet2d swapped = (Packet2d)__builtin_msa_shf_w((Packet4i)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1)); + Packet2d v = __builtin_msa_fmin_d(a, swapped); + return v[0]; +#else + double a0 = a[0], a1 = a[1]; + return ((numext::isnan)(a0) || a0 < a1) ? a0 : a1; +#endif +} + +// max +template <> +EIGEN_STRONG_INLINE double predux_max<Packet2d>(const Packet2d& a) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + Packet2d swapped = (Packet2d)__builtin_msa_shf_w((Packet4i)a, EIGEN_MSA_SHF_I8(2, 3, 0, 1)); + Packet2d v = __builtin_msa_fmax_d(a, swapped); + return v[0]; +#else + double a0 = a[0], a1 = a[1]; + return ((numext::isnan)(a0) || a0 > a1) ? a0 : a1; +#endif +} + +template <> +EIGEN_STRONG_INLINE Packet2d psqrt(const Packet2d& a) { + EIGEN_MSA_DEBUG; + + return __builtin_msa_fsqrt_d(a); +} + +template <> +EIGEN_STRONG_INLINE Packet2d prsqrt(const Packet2d& a) { + EIGEN_MSA_DEBUG; + +#if EIGEN_FAST_MATH + return __builtin_msa_frsqrt_d(a); +#else + Packet2d ones = __builtin_msa_ffint_s_d(__builtin_msa_ldi_d(1)); + return pdiv(ones, psqrt(a)); +#endif +} + +inline std::ostream& operator<<(std::ostream& os, const PacketBlock<Packet2d, 2>& value) { + os << "[ " << value.packet[0] << "," << std::endl << " " << value.packet[1] << " ]"; + return os; +} + +EIGEN_DEVICE_FUNC inline void ptranspose(PacketBlock<Packet2d, 2>& kernel) { + EIGEN_MSA_DEBUG; + + Packet2d trn1 = (Packet2d)__builtin_msa_ilvev_d((v2i64)kernel.packet[1], (v2i64)kernel.packet[0]); + Packet2d trn2 = (Packet2d)__builtin_msa_ilvod_d((v2i64)kernel.packet[1], (v2i64)kernel.packet[0]); + kernel.packet[0] = trn1; + kernel.packet[1] = trn2; +} + +template <> +EIGEN_STRONG_INLINE Packet2d pfloor<Packet2d>(const Packet2d& a) { + Packet2d v = a; + int32_t old_mode, new_mode; + asm volatile( + "cfcmsa %[old_mode], $1\n" + "ori %[new_mode], %[old_mode], 3\n" // 3 = round towards -INFINITY. + "ctcmsa $1, %[new_mode]\n" + "frint.d %w[v], %w[v]\n" + "ctcmsa $1, %[old_mode]\n" + : // outputs + [old_mode] "=r"(old_mode), [new_mode] "=r"(new_mode), + [v] "+f"(v) + : // inputs + : // clobbers + ); + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet2d pceil<Packet2d>(const Packet2d& a) { + Packet2d v = a; + int32_t old_mode, new_mode; + asm volatile( + "cfcmsa %[old_mode], $1\n" + "ori %[new_mode], %[old_mode], 3\n" + "xori %[new_mode], %[new_mode], 1\n" // 2 = round towards +INFINITY. + "ctcmsa $1, %[new_mode]\n" + "frint.d %w[v], %w[v]\n" + "ctcmsa $1, %[old_mode]\n" + : // outputs + [old_mode] "=r"(old_mode), [new_mode] "=r"(new_mode), + [v] "+f"(v) + : // inputs + : // clobbers + ); + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet2d pround<Packet2d>(const Packet2d& a) { + Packet2d v = a; + int32_t old_mode, new_mode; + asm volatile( + "cfcmsa %[old_mode], $1\n" + "ori %[new_mode], %[old_mode], 3\n" + "xori %[new_mode], %[new_mode], 3\n" // 0 = round to nearest, ties to even. + "ctcmsa $1, %[new_mode]\n" + "frint.d %w[v], %w[v]\n" + "ctcmsa $1, %[old_mode]\n" + : // outputs + [old_mode] "=r"(old_mode), [new_mode] "=r"(new_mode), + [v] "+f"(v) + : // inputs + : // clobbers + ); + return v; +} + +template <> +EIGEN_STRONG_INLINE Packet2d pblend(const Selector<2>& ifPacket, const Packet2d& thenPacket, + const Packet2d& elsePacket) { + Packet2ul select = { ifPacket.select[0], ifPacket.select[1] }; + Packet2l mask = __builtin_msa_ceqi_d((Packet2l)select, 0); + return (Packet2d)__builtin_msa_bsel_v((v16u8)mask, (v16u8)thenPacket, (v16u8)elsePacket); +} + +} // end namespace internal + +} // end namespace Eigen + +#endif // EIGEN_PACKET_MATH_MSA_H |