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fix bug #203: revert to using _mm_set1_p[sd]

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This commit is contained in:
Benoit Jacob 2011-02-28 00:04:05 -05:00
parent 31621ff0ef
commit eef03525b8
1 changed files with 0 additions and 14 deletions
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14
Eigen/src/Core/arch/SSE/PacketMath.h
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@ -110,22 +110,8 @@ template<> struct unpacket_traits<Packet4f> { typedef float type; enum {size=4}
template<> struct unpacket_traits<Packet2d> { typedef double type; enum {size=2}; };
template<> struct unpacket_traits<Packet4i> { typedef int type; enum {size=4}; };
#ifdef __GNUC__
// Sometimes GCC implements _mm_set1_p* using multiple moves,
// that is inefficient :( (e.g., see gemm_pack_rhs)
template<> EIGEN_STRONG_INLINE Packet4f pset1<Packet4f>(const float& from) {
Packet4f res = _mm_set_ss(from);
return vec4f_swizzle1(res,0,0,0,0);
}
template<> EIGEN_STRONG_INLINE Packet2d pset1<Packet2d>(const double& from) {
// NOTE the SSE3 intrinsic _mm_loaddup_pd is never faster but sometimes much slower
Packet2d res = _mm_set_sd(from);
return vec2d_swizzle1(res, 0, 0);
}
#else
template<> EIGEN_STRONG_INLINE Packet4f pset1<Packet4f>(const float& from) { return _mm_set1_ps(from); }
template<> EIGEN_STRONG_INLINE Packet2d pset1<Packet2d>(const double& from) { return _mm_set1_pd(from); }
#endif
template<> EIGEN_STRONG_INLINE Packet4i pset1<Packet4i>(const int& from) { return _mm_set1_epi32(from); }
template<> EIGEN_STRONG_INLINE Packet4f plset<float>(const float& a) { return _mm_add_ps(pset1<Packet4f>(a), _mm_set_ps(3,2,1,0)); }