disable the assembly for fast unaligned stores. indeed, there is a strange bug that is triggered by this code:

#include<Eigen/Core>

int main()
{
  Eigen::Matrix4f m;
  m <<1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16;
  m.col(0).swap(m.col(1));
  std::cout << m << std::endl;
}

when the fast unaligned stores are used, the column is copied instead of being swapped.

1 files changed, 1 insertions, 1 deletions

diff --git a/Eigen/src/Core/arch/SSE/PacketMath.h b/Eigen/src/Core/arch/SSE/PacketMath.h
index 3fd33afbf..130aa63ce 100644
--- a/Eigen/src/Core/arch/SSE/PacketMath.h
+++ b/Eigen/src/Core/arch/SSE/PacketMath.h
@@ -178,7 +178,7 @@ template<> EIGEN_STRONG_INLINE Packet4f ei_pload<float>(const float*    from) {
 template<> EIGEN_STRONG_INLINE Packet2d ei_pload<double>(const double*  from) { return _mm_load_pd(from); }
 template<> EIGEN_STRONG_INLINE Packet4i ei_pload<int>(const int* from) { return _mm_load_si128(reinterpret_cast<const Packet4i*>(from)); }
 
-#if (!defined __GNUC__) && (!defined __ICC)
+#if 1 // (!defined __GNUC__) && (!defined __ICC)
 template<> EIGEN_STRONG_INLINE Packet4f ei_ploadu(const float*   from) { return _mm_loadu_ps(from); }
 template<> EIGEN_STRONG_INLINE Packet2d ei_ploadu<double>(const double*  from) { return _mm_loadu_pd(from); }
 template<> EIGEN_STRONG_INLINE Packet4i ei_ploadu<int>(const int* from) { return _mm_loadu_si128(reinterpret_cast<const Packet4i*>(from)); }