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Disable __m128* wrappers when compiling with AVX and -fabi-version=4

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This commit is contained in:
Gael Guennebaud 2015-02-17 16:27:20 +01:00
parent 91ab2489dd
commit 159fb181c2
1 changed files with 2 additions and 3 deletions
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5
Eigen/src/Core/arch/SSE/PacketMath.h
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@ -28,13 +28,12 @@ namespace internal {
#endif
#endif
#if defined EIGEN_VECTORIZE_AVX && EIGEN_COMP_GNUC_STRICT
#if (defined EIGEN_VECTORIZE_AVX) && EIGEN_COMP_GNUC_STRICT && (__GXX_ABI_VERSION < 1004)
// With GCC's default ABI version, a __m128 or __m256 are the same types and therefore we cannot
// have overloads for both types without linking error.
// One solution is to increase ABI version using -fabi-version=4 (or greater).
// To workaround this inconvenince, we rather wrap 128bit types into the following helper
// Otherwise, we workaround this inconvenience by wrapping 128bit types into the following helper
// structure:
// TODO disable this wrapper if abi-versio>=4, but how to detect that without asking the user to define a macro?
template<typename T>
struct eigen_packet_wrapper
{