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Suppress annoying "may be used uninitialized in this function" warning with gcc >= 4.6

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This commit is contained in:
Gael Guennebaud 2013-01-24 11:59:17 +01:00
parent b74c0a4413
commit e4ec63aee7
1 changed files with 10 additions and 4 deletions
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14
Eigen/src/Core/arch/SSE/Complex.h
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@ -87,12 +87,18 @@ template<> EIGEN_STRONG_INLINE Packet2cf ploadu<Packet2cf>(const std::complex<fl
template<> EIGEN_STRONG_INLINE Packet2cf pset1<Packet2cf>(const std::complex<float>& from)
{
Packet2cf res;
#if EIGEN_GNUC_AT_MOST(4,2)
// workaround annoying "may be used uninitialized in this function" warning with gcc 4.2
#if EIGEN_GNUC_AT_MOST(4,2)
// Workaround annoying "may be used uninitialized in this function" warning with gcc 4.2
res.v = _mm_loadl_pi(_mm_set1_ps(0.0f), reinterpret_cast<const __m64*>(&from));
#else
#elif EIGEN_GNUC_AT_LEAST(4,6)
// Suppress annoying "may be used uninitialized in this function" warning with gcc >= 4.6
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wuninitialized"
res.v = _mm_loadl_pi(res.v, (const __m64*)&from);
#endif
#pragma GCC diagnostic pop
#else
res.v = _mm_loadl_pi(res.v, (const __m64*)&from);
#endif
return Packet2cf(_mm_movelh_ps(res.v,res.v));
}