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Simplify evaluator::Flags for Map<>

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This commit is contained in:
Gael Guennebaud 2015-10-27 11:06:42 +01:00
parent 12f50a4697
commit 8c66b6bc61
1 changed files with 3 additions and 14 deletions
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17
Eigen/src/Core/CoreEvaluators.h
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@ -633,20 +633,9 @@ struct evaluator<Map<PlainObjectType, MapOptions, StrideType> >
HasNoStride = HasNoInnerStride && HasNoOuterStride,
IsDynamicSize = PlainObjectType::SizeAtCompileTime==Dynamic,
// FIXME I don't get the code below, in particular why outer-stride-at-compile-time should have any effect on PacketAccessBit...
// Let's remove the code below for 3.4 if no issue occur
// PacketAlignment = unpacket_traits<PacketScalar>::alignment,
// KeepsPacketAccess = bool(HasNoInnerStride)
// && ( bool(IsDynamicSize)
// || HasNoOuterStride
// || ( OuterStrideAtCompileTime!=Dynamic
// && ((static_cast<int>(sizeof(Scalar))*OuterStrideAtCompileTime) % PacketAlignment)==0 ) ),
KeepsPacketAccess = bool(HasNoInnerStride),
Flags0 = evaluator<PlainObjectType>::Flags,
Flags1 = (bool(HasNoStride) || bool(PlainObjectType::IsVectorAtCompileTime))
? int(Flags0) : int(Flags0 & ~LinearAccessBit),
Flags = KeepsPacketAccess ? int(Flags1) : (int(Flags1) & ~PacketAccessBit),
PacketAccessMask = bool(HasNoInnerStride) ? ~int(0) : ~int(PacketAccessBit),
LinearAccessMask = bool(HasNoStride) || bool(PlainObjectType::IsVectorAtCompileTime) ? ~int(0) : ~int(LinearAccessBit),
Flags = int( evaluator<PlainObjectType>::Flags) & (LinearAccessMask&PacketAccessMask),
Alignment = int(MapOptions)&int(AlignedMask)
};