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| author |  Benoit Jacob <benoitjacob@google.com> | 2016-02-10 11:11:49 -0500 |
|---|---|---|
| committer | Benoit Jacob <benoitjacob@google.com> | 2016-02-10 11:11:49 -0500 |
| commit | e6ee18d6b46229b0028c454db5f389001649bd45 (patch) | |
| tree | 1f473ffb644c0155a564ba170a08969108e30775 /Eigen/src/Core/arch/SSE/MathFunctions.h | |
| parent | 2ac59e5d36452156d842964e675fb82818b5d46c (diff) | |
Make the GCC workaround for sqrt GCC-only; detect Emscripten as non-GCC
Diffstat (limited to 'Eigen/src/Core/arch/SSE/MathFunctions.h')
| -rw-r--r-- | Eigen/src/Core/arch/SSE/MathFunctions.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Eigen/src/Core/arch/SSE/MathFunctions.h b/Eigen/src/Core/arch/SSE/MathFunctions.h index 67cc3b3ba..5236f5b9a 100644 --- a/Eigen/src/Core/arch/SSE/MathFunctions.h +++ b/Eigen/src/Core/arch/SSE/MathFunctions.h @@ -531,7 +531,9 @@ template<> EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE double sqrt(const double &x) { -#if EIGEN_COMP_GNUC && !defined(EMSCRIPTEN) +#if EIGEN_COMP_GNUC_STRICT + // This works around a GCC bug generating poor code for _mm_sqrt_pd + // See https://bitbucket.org/eigen/eigen/commits/14f468dba4d350d7c19c9b93072e19f7b3df563b return internal::pfirst(internal::Packet2d(__builtin_ia32_sqrtsd(_mm_set_sd(x)))); #else return internal::pfirst(internal::Packet2d(_mm_sqrt_pd(_mm_set_sd(x)))); |