Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 1 | // This file is part of Eigen, a lightweight C++ template library |
| 2 | // for linear algebra. |
| 3 | // |
| 4 | // Copyright (C) 2007 Michael Olbrich <michael.olbrich@gmx.net> |
| 5 | // Copyright (C) 2006-2010 Benoit Jacob <jacob.benoit.1@gmail.com> |
| 6 | // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr> |
| 7 | // |
| 8 | // This Source Code Form is subject to the terms of the Mozilla |
| 9 | // Public License v. 2.0. If a copy of the MPL was not distributed |
| 10 | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| 11 | |
| 12 | #ifndef EIGEN_ASSIGN_H |
| 13 | #define EIGEN_ASSIGN_H |
| 14 | |
| 15 | namespace Eigen { |
| 16 | |
| 17 | namespace internal { |
| 18 | |
| 19 | /*************************************************************************** |
| 20 | * Part 1 : the logic deciding a strategy for traversal and unrolling * |
| 21 | ***************************************************************************/ |
| 22 | |
| 23 | template <typename Derived, typename OtherDerived> |
| 24 | struct assign_traits |
| 25 | { |
| 26 | public: |
| 27 | enum { |
| 28 | DstIsAligned = Derived::Flags & AlignedBit, |
| 29 | DstHasDirectAccess = Derived::Flags & DirectAccessBit, |
| 30 | SrcIsAligned = OtherDerived::Flags & AlignedBit, |
| 31 | JointAlignment = bool(DstIsAligned) && bool(SrcIsAligned) ? Aligned : Unaligned |
| 32 | }; |
| 33 | |
| 34 | private: |
| 35 | enum { |
| 36 | InnerSize = int(Derived::IsVectorAtCompileTime) ? int(Derived::SizeAtCompileTime) |
| 37 | : int(Derived::Flags)&RowMajorBit ? int(Derived::ColsAtCompileTime) |
| 38 | : int(Derived::RowsAtCompileTime), |
| 39 | InnerMaxSize = int(Derived::IsVectorAtCompileTime) ? int(Derived::MaxSizeAtCompileTime) |
| 40 | : int(Derived::Flags)&RowMajorBit ? int(Derived::MaxColsAtCompileTime) |
| 41 | : int(Derived::MaxRowsAtCompileTime), |
| 42 | MaxSizeAtCompileTime = Derived::SizeAtCompileTime, |
| 43 | PacketSize = packet_traits<typename Derived::Scalar>::size |
| 44 | }; |
| 45 | |
| 46 | enum { |
| 47 | StorageOrdersAgree = (int(Derived::IsRowMajor) == int(OtherDerived::IsRowMajor)), |
| 48 | MightVectorize = StorageOrdersAgree |
| 49 | && (int(Derived::Flags) & int(OtherDerived::Flags) & ActualPacketAccessBit), |
| 50 | MayInnerVectorize = MightVectorize && int(InnerSize)!=Dynamic && int(InnerSize)%int(PacketSize)==0 |
| 51 | && int(DstIsAligned) && int(SrcIsAligned), |
| 52 | MayLinearize = StorageOrdersAgree && (int(Derived::Flags) & int(OtherDerived::Flags) & LinearAccessBit), |
| 53 | MayLinearVectorize = MightVectorize && MayLinearize && DstHasDirectAccess |
| 54 | && (DstIsAligned || MaxSizeAtCompileTime == Dynamic), |
| 55 | /* If the destination isn't aligned, we have to do runtime checks and we don't unroll, |
| 56 | so it's only good for large enough sizes. */ |
| 57 | MaySliceVectorize = MightVectorize && DstHasDirectAccess |
| 58 | && (int(InnerMaxSize)==Dynamic || int(InnerMaxSize)>=3*PacketSize) |
| 59 | /* slice vectorization can be slow, so we only want it if the slices are big, which is |
| 60 | indicated by InnerMaxSize rather than InnerSize, think of the case of a dynamic block |
| 61 | in a fixed-size matrix */ |
| 62 | }; |
| 63 | |
| 64 | public: |
| 65 | enum { |
| 66 | Traversal = int(MayInnerVectorize) ? int(InnerVectorizedTraversal) |
| 67 | : int(MayLinearVectorize) ? int(LinearVectorizedTraversal) |
| 68 | : int(MaySliceVectorize) ? int(SliceVectorizedTraversal) |
| 69 | : int(MayLinearize) ? int(LinearTraversal) |
| 70 | : int(DefaultTraversal), |
| 71 | Vectorized = int(Traversal) == InnerVectorizedTraversal |
| 72 | || int(Traversal) == LinearVectorizedTraversal |
| 73 | || int(Traversal) == SliceVectorizedTraversal |
| 74 | }; |
| 75 | |
| 76 | private: |
| 77 | enum { |
| 78 | UnrollingLimit = EIGEN_UNROLLING_LIMIT * (Vectorized ? int(PacketSize) : 1), |
| 79 | MayUnrollCompletely = int(Derived::SizeAtCompileTime) != Dynamic |
| 80 | && int(OtherDerived::CoeffReadCost) != Dynamic |
| 81 | && int(Derived::SizeAtCompileTime) * int(OtherDerived::CoeffReadCost) <= int(UnrollingLimit), |
| 82 | MayUnrollInner = int(InnerSize) != Dynamic |
| 83 | && int(OtherDerived::CoeffReadCost) != Dynamic |
| 84 | && int(InnerSize) * int(OtherDerived::CoeffReadCost) <= int(UnrollingLimit) |
| 85 | }; |
| 86 | |
| 87 | public: |
| 88 | enum { |
| 89 | Unrolling = (int(Traversal) == int(InnerVectorizedTraversal) || int(Traversal) == int(DefaultTraversal)) |
| 90 | ? ( |
| 91 | int(MayUnrollCompletely) ? int(CompleteUnrolling) |
| 92 | : int(MayUnrollInner) ? int(InnerUnrolling) |
| 93 | : int(NoUnrolling) |
| 94 | ) |
| 95 | : int(Traversal) == int(LinearVectorizedTraversal) |
| 96 | ? ( bool(MayUnrollCompletely) && bool(DstIsAligned) ? int(CompleteUnrolling) : int(NoUnrolling) ) |
| 97 | : int(Traversal) == int(LinearTraversal) |
| 98 | ? ( bool(MayUnrollCompletely) ? int(CompleteUnrolling) : int(NoUnrolling) ) |
| 99 | : int(NoUnrolling) |
| 100 | }; |
| 101 | |
| 102 | #ifdef EIGEN_DEBUG_ASSIGN |
| 103 | static void debug() |
| 104 | { |
| 105 | EIGEN_DEBUG_VAR(DstIsAligned) |
| 106 | EIGEN_DEBUG_VAR(SrcIsAligned) |
| 107 | EIGEN_DEBUG_VAR(JointAlignment) |
| 108 | EIGEN_DEBUG_VAR(InnerSize) |
| 109 | EIGEN_DEBUG_VAR(InnerMaxSize) |
| 110 | EIGEN_DEBUG_VAR(PacketSize) |
| 111 | EIGEN_DEBUG_VAR(StorageOrdersAgree) |
| 112 | EIGEN_DEBUG_VAR(MightVectorize) |
| 113 | EIGEN_DEBUG_VAR(MayLinearize) |
| 114 | EIGEN_DEBUG_VAR(MayInnerVectorize) |
| 115 | EIGEN_DEBUG_VAR(MayLinearVectorize) |
| 116 | EIGEN_DEBUG_VAR(MaySliceVectorize) |
| 117 | EIGEN_DEBUG_VAR(Traversal) |
| 118 | EIGEN_DEBUG_VAR(UnrollingLimit) |
| 119 | EIGEN_DEBUG_VAR(MayUnrollCompletely) |
| 120 | EIGEN_DEBUG_VAR(MayUnrollInner) |
| 121 | EIGEN_DEBUG_VAR(Unrolling) |
| 122 | } |
| 123 | #endif |
| 124 | }; |
| 125 | |
| 126 | /*************************************************************************** |
| 127 | * Part 2 : meta-unrollers |
| 128 | ***************************************************************************/ |
| 129 | |
| 130 | /************************ |
| 131 | *** Default traversal *** |
| 132 | ************************/ |
| 133 | |
| 134 | template<typename Derived1, typename Derived2, int Index, int Stop> |
| 135 | struct assign_DefaultTraversal_CompleteUnrolling |
| 136 | { |
| 137 | enum { |
| 138 | outer = Index / Derived1::InnerSizeAtCompileTime, |
| 139 | inner = Index % Derived1::InnerSizeAtCompileTime |
| 140 | }; |
| 141 | |
| 142 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 143 | { |
| 144 | dst.copyCoeffByOuterInner(outer, inner, src); |
| 145 | assign_DefaultTraversal_CompleteUnrolling<Derived1, Derived2, Index+1, Stop>::run(dst, src); |
| 146 | } |
| 147 | }; |
| 148 | |
| 149 | template<typename Derived1, typename Derived2, int Stop> |
| 150 | struct assign_DefaultTraversal_CompleteUnrolling<Derived1, Derived2, Stop, Stop> |
| 151 | { |
| 152 | static EIGEN_STRONG_INLINE void run(Derived1 &, const Derived2 &) {} |
| 153 | }; |
| 154 | |
| 155 | template<typename Derived1, typename Derived2, int Index, int Stop> |
| 156 | struct assign_DefaultTraversal_InnerUnrolling |
| 157 | { |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 158 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src, typename Derived1::Index outer) |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 159 | { |
| 160 | dst.copyCoeffByOuterInner(outer, Index, src); |
| 161 | assign_DefaultTraversal_InnerUnrolling<Derived1, Derived2, Index+1, Stop>::run(dst, src, outer); |
| 162 | } |
| 163 | }; |
| 164 | |
| 165 | template<typename Derived1, typename Derived2, int Stop> |
| 166 | struct assign_DefaultTraversal_InnerUnrolling<Derived1, Derived2, Stop, Stop> |
| 167 | { |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 168 | static EIGEN_STRONG_INLINE void run(Derived1 &, const Derived2 &, typename Derived1::Index) {} |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 169 | }; |
| 170 | |
| 171 | /*********************** |
| 172 | *** Linear traversal *** |
| 173 | ***********************/ |
| 174 | |
| 175 | template<typename Derived1, typename Derived2, int Index, int Stop> |
| 176 | struct assign_LinearTraversal_CompleteUnrolling |
| 177 | { |
| 178 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 179 | { |
| 180 | dst.copyCoeff(Index, src); |
| 181 | assign_LinearTraversal_CompleteUnrolling<Derived1, Derived2, Index+1, Stop>::run(dst, src); |
| 182 | } |
| 183 | }; |
| 184 | |
| 185 | template<typename Derived1, typename Derived2, int Stop> |
| 186 | struct assign_LinearTraversal_CompleteUnrolling<Derived1, Derived2, Stop, Stop> |
| 187 | { |
| 188 | static EIGEN_STRONG_INLINE void run(Derived1 &, const Derived2 &) {} |
| 189 | }; |
| 190 | |
| 191 | /************************** |
| 192 | *** Inner vectorization *** |
| 193 | **************************/ |
| 194 | |
| 195 | template<typename Derived1, typename Derived2, int Index, int Stop> |
| 196 | struct assign_innervec_CompleteUnrolling |
| 197 | { |
| 198 | enum { |
| 199 | outer = Index / Derived1::InnerSizeAtCompileTime, |
| 200 | inner = Index % Derived1::InnerSizeAtCompileTime, |
| 201 | JointAlignment = assign_traits<Derived1,Derived2>::JointAlignment |
| 202 | }; |
| 203 | |
| 204 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 205 | { |
| 206 | dst.template copyPacketByOuterInner<Derived2, Aligned, JointAlignment>(outer, inner, src); |
| 207 | assign_innervec_CompleteUnrolling<Derived1, Derived2, |
| 208 | Index+packet_traits<typename Derived1::Scalar>::size, Stop>::run(dst, src); |
| 209 | } |
| 210 | }; |
| 211 | |
| 212 | template<typename Derived1, typename Derived2, int Stop> |
| 213 | struct assign_innervec_CompleteUnrolling<Derived1, Derived2, Stop, Stop> |
| 214 | { |
| 215 | static EIGEN_STRONG_INLINE void run(Derived1 &, const Derived2 &) {} |
| 216 | }; |
| 217 | |
| 218 | template<typename Derived1, typename Derived2, int Index, int Stop> |
| 219 | struct assign_innervec_InnerUnrolling |
| 220 | { |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 221 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src, typename Derived1::Index outer) |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 222 | { |
| 223 | dst.template copyPacketByOuterInner<Derived2, Aligned, Aligned>(outer, Index, src); |
| 224 | assign_innervec_InnerUnrolling<Derived1, Derived2, |
| 225 | Index+packet_traits<typename Derived1::Scalar>::size, Stop>::run(dst, src, outer); |
| 226 | } |
| 227 | }; |
| 228 | |
| 229 | template<typename Derived1, typename Derived2, int Stop> |
| 230 | struct assign_innervec_InnerUnrolling<Derived1, Derived2, Stop, Stop> |
| 231 | { |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 232 | static EIGEN_STRONG_INLINE void run(Derived1 &, const Derived2 &, typename Derived1::Index) {} |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 233 | }; |
| 234 | |
| 235 | /*************************************************************************** |
| 236 | * Part 3 : implementation of all cases |
| 237 | ***************************************************************************/ |
| 238 | |
| 239 | template<typename Derived1, typename Derived2, |
| 240 | int Traversal = assign_traits<Derived1, Derived2>::Traversal, |
| 241 | int Unrolling = assign_traits<Derived1, Derived2>::Unrolling, |
| 242 | int Version = Specialized> |
| 243 | struct assign_impl; |
| 244 | |
| 245 | /************************ |
| 246 | *** Default traversal *** |
| 247 | ************************/ |
| 248 | |
| 249 | template<typename Derived1, typename Derived2, int Unrolling, int Version> |
| 250 | struct assign_impl<Derived1, Derived2, InvalidTraversal, Unrolling, Version> |
| 251 | { |
| 252 | static inline void run(Derived1 &, const Derived2 &) { } |
| 253 | }; |
| 254 | |
| 255 | template<typename Derived1, typename Derived2, int Version> |
| 256 | struct assign_impl<Derived1, Derived2, DefaultTraversal, NoUnrolling, Version> |
| 257 | { |
| 258 | typedef typename Derived1::Index Index; |
| 259 | static inline void run(Derived1 &dst, const Derived2 &src) |
| 260 | { |
| 261 | const Index innerSize = dst.innerSize(); |
| 262 | const Index outerSize = dst.outerSize(); |
| 263 | for(Index outer = 0; outer < outerSize; ++outer) |
| 264 | for(Index inner = 0; inner < innerSize; ++inner) |
| 265 | dst.copyCoeffByOuterInner(outer, inner, src); |
| 266 | } |
| 267 | }; |
| 268 | |
| 269 | template<typename Derived1, typename Derived2, int Version> |
| 270 | struct assign_impl<Derived1, Derived2, DefaultTraversal, CompleteUnrolling, Version> |
| 271 | { |
| 272 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 273 | { |
| 274 | assign_DefaultTraversal_CompleteUnrolling<Derived1, Derived2, 0, Derived1::SizeAtCompileTime> |
| 275 | ::run(dst, src); |
| 276 | } |
| 277 | }; |
| 278 | |
| 279 | template<typename Derived1, typename Derived2, int Version> |
| 280 | struct assign_impl<Derived1, Derived2, DefaultTraversal, InnerUnrolling, Version> |
| 281 | { |
| 282 | typedef typename Derived1::Index Index; |
| 283 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 284 | { |
| 285 | const Index outerSize = dst.outerSize(); |
| 286 | for(Index outer = 0; outer < outerSize; ++outer) |
| 287 | assign_DefaultTraversal_InnerUnrolling<Derived1, Derived2, 0, Derived1::InnerSizeAtCompileTime> |
| 288 | ::run(dst, src, outer); |
| 289 | } |
| 290 | }; |
| 291 | |
| 292 | /*********************** |
| 293 | *** Linear traversal *** |
| 294 | ***********************/ |
| 295 | |
| 296 | template<typename Derived1, typename Derived2, int Version> |
| 297 | struct assign_impl<Derived1, Derived2, LinearTraversal, NoUnrolling, Version> |
| 298 | { |
| 299 | typedef typename Derived1::Index Index; |
| 300 | static inline void run(Derived1 &dst, const Derived2 &src) |
| 301 | { |
| 302 | const Index size = dst.size(); |
| 303 | for(Index i = 0; i < size; ++i) |
| 304 | dst.copyCoeff(i, src); |
| 305 | } |
| 306 | }; |
| 307 | |
| 308 | template<typename Derived1, typename Derived2, int Version> |
| 309 | struct assign_impl<Derived1, Derived2, LinearTraversal, CompleteUnrolling, Version> |
| 310 | { |
| 311 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 312 | { |
| 313 | assign_LinearTraversal_CompleteUnrolling<Derived1, Derived2, 0, Derived1::SizeAtCompileTime> |
| 314 | ::run(dst, src); |
| 315 | } |
| 316 | }; |
| 317 | |
| 318 | /************************** |
| 319 | *** Inner vectorization *** |
| 320 | **************************/ |
| 321 | |
| 322 | template<typename Derived1, typename Derived2, int Version> |
| 323 | struct assign_impl<Derived1, Derived2, InnerVectorizedTraversal, NoUnrolling, Version> |
| 324 | { |
| 325 | typedef typename Derived1::Index Index; |
| 326 | static inline void run(Derived1 &dst, const Derived2 &src) |
| 327 | { |
| 328 | const Index innerSize = dst.innerSize(); |
| 329 | const Index outerSize = dst.outerSize(); |
| 330 | const Index packetSize = packet_traits<typename Derived1::Scalar>::size; |
| 331 | for(Index outer = 0; outer < outerSize; ++outer) |
| 332 | for(Index inner = 0; inner < innerSize; inner+=packetSize) |
| 333 | dst.template copyPacketByOuterInner<Derived2, Aligned, Aligned>(outer, inner, src); |
| 334 | } |
| 335 | }; |
| 336 | |
| 337 | template<typename Derived1, typename Derived2, int Version> |
| 338 | struct assign_impl<Derived1, Derived2, InnerVectorizedTraversal, CompleteUnrolling, Version> |
| 339 | { |
| 340 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 341 | { |
| 342 | assign_innervec_CompleteUnrolling<Derived1, Derived2, 0, Derived1::SizeAtCompileTime> |
| 343 | ::run(dst, src); |
| 344 | } |
| 345 | }; |
| 346 | |
| 347 | template<typename Derived1, typename Derived2, int Version> |
| 348 | struct assign_impl<Derived1, Derived2, InnerVectorizedTraversal, InnerUnrolling, Version> |
| 349 | { |
| 350 | typedef typename Derived1::Index Index; |
| 351 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 352 | { |
| 353 | const Index outerSize = dst.outerSize(); |
| 354 | for(Index outer = 0; outer < outerSize; ++outer) |
| 355 | assign_innervec_InnerUnrolling<Derived1, Derived2, 0, Derived1::InnerSizeAtCompileTime> |
| 356 | ::run(dst, src, outer); |
| 357 | } |
| 358 | }; |
| 359 | |
| 360 | /*************************** |
| 361 | *** Linear vectorization *** |
| 362 | ***************************/ |
| 363 | |
| 364 | template <bool IsAligned = false> |
| 365 | struct unaligned_assign_impl |
| 366 | { |
| 367 | template <typename Derived, typename OtherDerived> |
| 368 | static EIGEN_STRONG_INLINE void run(const Derived&, OtherDerived&, typename Derived::Index, typename Derived::Index) {} |
| 369 | }; |
| 370 | |
| 371 | template <> |
| 372 | struct unaligned_assign_impl<false> |
| 373 | { |
| 374 | // MSVC must not inline this functions. If it does, it fails to optimize the |
| 375 | // packet access path. |
| 376 | #ifdef _MSC_VER |
| 377 | template <typename Derived, typename OtherDerived> |
| 378 | static EIGEN_DONT_INLINE void run(const Derived& src, OtherDerived& dst, typename Derived::Index start, typename Derived::Index end) |
| 379 | #else |
| 380 | template <typename Derived, typename OtherDerived> |
| 381 | static EIGEN_STRONG_INLINE void run(const Derived& src, OtherDerived& dst, typename Derived::Index start, typename Derived::Index end) |
| 382 | #endif |
| 383 | { |
| 384 | for (typename Derived::Index index = start; index < end; ++index) |
| 385 | dst.copyCoeff(index, src); |
| 386 | } |
| 387 | }; |
| 388 | |
| 389 | template<typename Derived1, typename Derived2, int Version> |
| 390 | struct assign_impl<Derived1, Derived2, LinearVectorizedTraversal, NoUnrolling, Version> |
| 391 | { |
| 392 | typedef typename Derived1::Index Index; |
| 393 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 394 | { |
| 395 | const Index size = dst.size(); |
| 396 | typedef packet_traits<typename Derived1::Scalar> PacketTraits; |
| 397 | enum { |
| 398 | packetSize = PacketTraits::size, |
| 399 | dstAlignment = PacketTraits::AlignedOnScalar ? Aligned : int(assign_traits<Derived1,Derived2>::DstIsAligned) , |
| 400 | srcAlignment = assign_traits<Derived1,Derived2>::JointAlignment |
| 401 | }; |
| 402 | const Index alignedStart = assign_traits<Derived1,Derived2>::DstIsAligned ? 0 |
| 403 | : internal::first_aligned(&dst.coeffRef(0), size); |
| 404 | const Index alignedEnd = alignedStart + ((size-alignedStart)/packetSize)*packetSize; |
| 405 | |
| 406 | unaligned_assign_impl<assign_traits<Derived1,Derived2>::DstIsAligned!=0>::run(src,dst,0,alignedStart); |
| 407 | |
| 408 | for(Index index = alignedStart; index < alignedEnd; index += packetSize) |
| 409 | { |
| 410 | dst.template copyPacket<Derived2, dstAlignment, srcAlignment>(index, src); |
| 411 | } |
| 412 | |
| 413 | unaligned_assign_impl<>::run(src,dst,alignedEnd,size); |
| 414 | } |
| 415 | }; |
| 416 | |
| 417 | template<typename Derived1, typename Derived2, int Version> |
| 418 | struct assign_impl<Derived1, Derived2, LinearVectorizedTraversal, CompleteUnrolling, Version> |
| 419 | { |
| 420 | typedef typename Derived1::Index Index; |
| 421 | static EIGEN_STRONG_INLINE void run(Derived1 &dst, const Derived2 &src) |
| 422 | { |
| 423 | enum { size = Derived1::SizeAtCompileTime, |
| 424 | packetSize = packet_traits<typename Derived1::Scalar>::size, |
| 425 | alignedSize = (size/packetSize)*packetSize }; |
| 426 | |
| 427 | assign_innervec_CompleteUnrolling<Derived1, Derived2, 0, alignedSize>::run(dst, src); |
| 428 | assign_DefaultTraversal_CompleteUnrolling<Derived1, Derived2, alignedSize, size>::run(dst, src); |
| 429 | } |
| 430 | }; |
| 431 | |
| 432 | /************************** |
| 433 | *** Slice vectorization *** |
| 434 | ***************************/ |
| 435 | |
| 436 | template<typename Derived1, typename Derived2, int Version> |
| 437 | struct assign_impl<Derived1, Derived2, SliceVectorizedTraversal, NoUnrolling, Version> |
| 438 | { |
| 439 | typedef typename Derived1::Index Index; |
| 440 | static inline void run(Derived1 &dst, const Derived2 &src) |
| 441 | { |
| 442 | typedef packet_traits<typename Derived1::Scalar> PacketTraits; |
| 443 | enum { |
| 444 | packetSize = PacketTraits::size, |
| 445 | alignable = PacketTraits::AlignedOnScalar, |
| 446 | dstAlignment = alignable ? Aligned : int(assign_traits<Derived1,Derived2>::DstIsAligned) , |
| 447 | srcAlignment = assign_traits<Derived1,Derived2>::JointAlignment |
| 448 | }; |
| 449 | const Index packetAlignedMask = packetSize - 1; |
| 450 | const Index innerSize = dst.innerSize(); |
| 451 | const Index outerSize = dst.outerSize(); |
| 452 | const Index alignedStep = alignable ? (packetSize - dst.outerStride() % packetSize) & packetAlignedMask : 0; |
| 453 | Index alignedStart = ((!alignable) || assign_traits<Derived1,Derived2>::DstIsAligned) ? 0 |
| 454 | : internal::first_aligned(&dst.coeffRef(0,0), innerSize); |
| 455 | |
| 456 | for(Index outer = 0; outer < outerSize; ++outer) |
| 457 | { |
| 458 | const Index alignedEnd = alignedStart + ((innerSize-alignedStart) & ~packetAlignedMask); |
| 459 | // do the non-vectorizable part of the assignment |
| 460 | for(Index inner = 0; inner<alignedStart ; ++inner) |
| 461 | dst.copyCoeffByOuterInner(outer, inner, src); |
| 462 | |
| 463 | // do the vectorizable part of the assignment |
| 464 | for(Index inner = alignedStart; inner<alignedEnd; inner+=packetSize) |
| 465 | dst.template copyPacketByOuterInner<Derived2, dstAlignment, Unaligned>(outer, inner, src); |
| 466 | |
| 467 | // do the non-vectorizable part of the assignment |
| 468 | for(Index inner = alignedEnd; inner<innerSize ; ++inner) |
| 469 | dst.copyCoeffByOuterInner(outer, inner, src); |
| 470 | |
| 471 | alignedStart = std::min<Index>((alignedStart+alignedStep)%packetSize, innerSize); |
| 472 | } |
| 473 | } |
| 474 | }; |
| 475 | |
| 476 | } // end namespace internal |
| 477 | |
| 478 | /*************************************************************************** |
| 479 | * Part 4 : implementation of DenseBase methods |
| 480 | ***************************************************************************/ |
| 481 | |
| 482 | template<typename Derived> |
| 483 | template<typename OtherDerived> |
| 484 | EIGEN_STRONG_INLINE Derived& DenseBase<Derived> |
| 485 | ::lazyAssign(const DenseBase<OtherDerived>& other) |
| 486 | { |
| 487 | enum{ |
| 488 | SameType = internal::is_same<typename Derived::Scalar,typename OtherDerived::Scalar>::value |
| 489 | }; |
| 490 | |
| 491 | EIGEN_STATIC_ASSERT_LVALUE(Derived) |
| 492 | EIGEN_STATIC_ASSERT_SAME_MATRIX_SIZE(Derived,OtherDerived) |
| 493 | EIGEN_STATIC_ASSERT(SameType,YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY) |
| 494 | |
| 495 | #ifdef EIGEN_DEBUG_ASSIGN |
| 496 | internal::assign_traits<Derived, OtherDerived>::debug(); |
| 497 | #endif |
| 498 | eigen_assert(rows() == other.rows() && cols() == other.cols()); |
| 499 | internal::assign_impl<Derived, OtherDerived, int(SameType) ? int(internal::assign_traits<Derived, OtherDerived>::Traversal) |
| 500 | : int(InvalidTraversal)>::run(derived(),other.derived()); |
| 501 | #ifndef EIGEN_NO_DEBUG |
| 502 | checkTransposeAliasing(other.derived()); |
| 503 | #endif |
| 504 | return derived(); |
| 505 | } |
| 506 | |
| 507 | namespace internal { |
| 508 | |
| 509 | template<typename Derived, typename OtherDerived, |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 510 | bool EvalBeforeAssigning = (int(internal::traits<OtherDerived>::Flags) & EvalBeforeAssigningBit) != 0, |
| 511 | bool NeedToTranspose = ((int(Derived::RowsAtCompileTime) == 1 && int(OtherDerived::ColsAtCompileTime) == 1) |
| 512 | | // FIXME | instead of || to please GCC 4.4.0 stupid warning "suggest parentheses around &&". |
| 513 | // revert to || as soon as not needed anymore. |
| 514 | (int(Derived::ColsAtCompileTime) == 1 && int(OtherDerived::RowsAtCompileTime) == 1)) |
| 515 | && int(Derived::SizeAtCompileTime) != 1> |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 516 | struct assign_selector; |
| 517 | |
| 518 | template<typename Derived, typename OtherDerived> |
| 519 | struct assign_selector<Derived,OtherDerived,false,false> { |
| 520 | static EIGEN_STRONG_INLINE Derived& run(Derived& dst, const OtherDerived& other) { return dst.lazyAssign(other.derived()); } |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 521 | template<typename ActualDerived, typename ActualOtherDerived> |
| 522 | static EIGEN_STRONG_INLINE Derived& evalTo(ActualDerived& dst, const ActualOtherDerived& other) { other.evalTo(dst); return dst; } |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 523 | }; |
| 524 | template<typename Derived, typename OtherDerived> |
| 525 | struct assign_selector<Derived,OtherDerived,true,false> { |
| 526 | static EIGEN_STRONG_INLINE Derived& run(Derived& dst, const OtherDerived& other) { return dst.lazyAssign(other.eval()); } |
| 527 | }; |
| 528 | template<typename Derived, typename OtherDerived> |
| 529 | struct assign_selector<Derived,OtherDerived,false,true> { |
| 530 | static EIGEN_STRONG_INLINE Derived& run(Derived& dst, const OtherDerived& other) { return dst.lazyAssign(other.transpose()); } |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 531 | template<typename ActualDerived, typename ActualOtherDerived> |
| 532 | static EIGEN_STRONG_INLINE Derived& evalTo(ActualDerived& dst, const ActualOtherDerived& other) { Transpose<ActualDerived> dstTrans(dst); other.evalTo(dstTrans); return dst; } |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 533 | }; |
| 534 | template<typename Derived, typename OtherDerived> |
| 535 | struct assign_selector<Derived,OtherDerived,true,true> { |
| 536 | static EIGEN_STRONG_INLINE Derived& run(Derived& dst, const OtherDerived& other) { return dst.lazyAssign(other.transpose().eval()); } |
| 537 | }; |
| 538 | |
| 539 | } // end namespace internal |
| 540 | |
| 541 | template<typename Derived> |
| 542 | template<typename OtherDerived> |
| 543 | EIGEN_STRONG_INLINE Derived& DenseBase<Derived>::operator=(const DenseBase<OtherDerived>& other) |
| 544 | { |
| 545 | return internal::assign_selector<Derived,OtherDerived>::run(derived(), other.derived()); |
| 546 | } |
| 547 | |
| 548 | template<typename Derived> |
| 549 | EIGEN_STRONG_INLINE Derived& DenseBase<Derived>::operator=(const DenseBase& other) |
| 550 | { |
| 551 | return internal::assign_selector<Derived,Derived>::run(derived(), other.derived()); |
| 552 | } |
| 553 | |
| 554 | template<typename Derived> |
| 555 | EIGEN_STRONG_INLINE Derived& MatrixBase<Derived>::operator=(const MatrixBase& other) |
| 556 | { |
| 557 | return internal::assign_selector<Derived,Derived>::run(derived(), other.derived()); |
| 558 | } |
| 559 | |
| 560 | template<typename Derived> |
| 561 | template <typename OtherDerived> |
| 562 | EIGEN_STRONG_INLINE Derived& MatrixBase<Derived>::operator=(const DenseBase<OtherDerived>& other) |
| 563 | { |
| 564 | return internal::assign_selector<Derived,OtherDerived>::run(derived(), other.derived()); |
| 565 | } |
| 566 | |
| 567 | template<typename Derived> |
| 568 | template <typename OtherDerived> |
| 569 | EIGEN_STRONG_INLINE Derived& MatrixBase<Derived>::operator=(const EigenBase<OtherDerived>& other) |
| 570 | { |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 571 | return internal::assign_selector<Derived,OtherDerived,false>::evalTo(derived(), other.derived()); |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | template<typename Derived> |
| 575 | template<typename OtherDerived> |
| 576 | EIGEN_STRONG_INLINE Derived& MatrixBase<Derived>::operator=(const ReturnByValue<OtherDerived>& other) |
| 577 | { |
Carlos Hernandez | 7faaa9f | 2014-08-05 17:53:32 -0700 | [diff] [blame] | 578 | return internal::assign_selector<Derived,OtherDerived,false>::evalTo(derived(), other.derived()); |
Narayan Kamath | c981c48 | 2012-11-02 10:59:05 +0000 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | } // end namespace Eigen |
| 582 | |
| 583 | #endif // EIGEN_ASSIGN_H |