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Fix #1911: add benchmark for move semantics with fixed-size matrix

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$ clang++ -O3 bench/bench_move_semantics.cpp -I. -std=c++11 \
        -o bench_move_semantics

$ ./bench_move_semantics
float copy semantics: 1755.97 ms
float move semantics: 55.063 ms
double copy semantics: 2457.65 ms
double move semantics: 55.034 ms
This commit is contained in:
Sebastien Boisvert
2020-06-11 23:43:25 +00:00
committed by Rasmus Munk Larsen
parent a7d2552af8
commit 39cbd6578f
4 changed files with 143 additions and 0 deletions
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12
Eigen/src/Core/DenseStorage.h
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@@ -200,6 +200,18 @@ template<typename T, int Size, int _Rows, int _Cols, int _Options> class DenseSt
if (this != &other) m_data = other.m_data;
return *this;
}
#if EIGEN_HAS_RVALUE_REFERENCES
EIGEN_DEVICE_FUNC DenseStorage(DenseStorage&& other) EIGEN_NOEXCEPT
: m_data(std::move(other.m_data))
{
}
EIGEN_DEVICE_FUNC DenseStorage& operator=(DenseStorage&& other) EIGEN_NOEXCEPT
{
if (this != &other)
m_data = std::move(other.m_data);
return *this;
}
#endif
EIGEN_DEVICE_FUNC DenseStorage(Index size, Index rows, Index cols) {
EIGEN_INTERNAL_DENSE_STORAGE_CTOR_PLUGIN({})
eigen_internal_assert(size==rows*cols && rows==_Rows && cols==_Cols);