diff options
| author |  Gael Guennebaud <g.gael@free.fr> | 2018-11-28 17:56:24 +0100 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2018-11-28 17:56:24 +0100 |
| commit | e19ece822de2a516f66712068a2e5fa4fe18150b (patch) | |
| tree | e61e58990df4ee8fecd40cfdb3c9e8b765a2fa8e /Eigen | |
| parent | 41052f63b7b4cc3c3b4de89b3ed49948b845da84 (diff) | |
Disable fma gcc's workaround for gcc >= 8 (based on GEMM benchmarks)
Diffstat (limited to 'Eigen')
| -rw-r--r-- | Eigen/src/Core/arch/AVX/PacketMath.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Eigen/src/Core/arch/AVX/PacketMath.h b/Eigen/src/Core/arch/AVX/PacketMath.h index 4c1abe43f..abfeb4338 100644 --- a/Eigen/src/Core/arch/AVX/PacketMath.h +++ b/Eigen/src/Core/arch/AVX/PacketMath.h @@ -174,7 +174,7 @@ template<> EIGEN_STRONG_INLINE Packet8i pdiv<Packet8i>(const Packet8i& /*a*/, co #ifdef __FMA__ template<> EIGEN_STRONG_INLINE Packet8f pmadd(const Packet8f& a, const Packet8f& b, const Packet8f& c) { -#if ( EIGEN_COMP_GNUC_STRICT || (EIGEN_COMP_CLANG && (EIGEN_COMP_CLANG<308)) ) +#if ( (EIGEN_COMP_GNUC_STRICT && EIGEN_COMP_GNUC<80) || (EIGEN_COMP_CLANG && (EIGEN_COMP_CLANG<308)) ) // clang stupidly generates a vfmadd213ps instruction plus some vmovaps on registers, // and gcc stupidly generates a vfmadd132ps instruction, // so let's enforce it to generate a vfmadd231ps instruction since the most common use case is to accumulate @@ -187,7 +187,7 @@ template<> EIGEN_STRONG_INLINE Packet8f pmadd(const Packet8f& a, const Packet8f& #endif } template<> EIGEN_STRONG_INLINE Packet4d pmadd(const Packet4d& a, const Packet4d& b, const Packet4d& c) { -#if ( EIGEN_COMP_GNUC_STRICT || (EIGEN_COMP_CLANG && (EIGEN_COMP_CLANG<308)) ) +#if ( (EIGEN_COMP_GNUC_STRICT && EIGEN_COMP_GNUC<80) || (EIGEN_COMP_CLANG && (EIGEN_COMP_CLANG<308)) ) // see above Packet4d res = c; __asm__("vfmadd231pd %[a], %[b], %[c]" : [c] "+x" (res) : [a] "x" (a), [b] "x" (b)); |