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workaround gcc 4.2.1 ICE (fix bug #145)

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This commit is contained in:
Gael Guennebaud 2011-02-09 13:04:35 +01:00
parent 40526e24b4
commit c0d5131435
1 changed files with 8 additions and 0 deletions
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8
Eigen/src/Core/arch/SSE/Complex.h
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@ -111,9 +111,17 @@ template<> EIGEN_STRONG_INLINE Packet2cf pset1<Packet2cf>(const std::complex<flo
template<> EIGEN_STRONG_INLINE std::complex<float> pfirst<Packet2cf>(const Packet2cf& a)
{
#if (defined __GNUC__) && (__GNUC__==4) && (__GNUC_MINOR__==2) && (__GNUC_MINOR__==2) && (__GNUC_PATCHLEVEL__<=3)
// workaround gcc 4.2.1 ICE (mac's gcc version) - I'm not sure how the 4.2.2 and 4.2.3 deal with it, but 4.2.4 works well.
// this is not performance wise ideal, but who cares...
EIGEN_ALIGN16 std::complex<float> res[2];
_mm_store_ps((float*)res, a.v);
return res[0];
#else
std::complex<float> res;
_mm_storel_pi((__m64*)&res, a.v);
return res;
#endif
}
template<> EIGEN_STRONG_INLINE Packet2cf preverse(const Packet2cf& a) { return Packet2cf(_mm_castpd_ps(preverse(_mm_castps_pd(a.v)))); }