diff options
Diffstat (limited to 'Eigen/src/Core/util/ConfigureVectorization.h')
| -rw-r--r-- | Eigen/src/Core/util/ConfigureVectorization.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Eigen/src/Core/util/ConfigureVectorization.h b/Eigen/src/Core/util/ConfigureVectorization.h index 2584717b5..121476394 100644 --- a/Eigen/src/Core/util/ConfigureVectorization.h +++ b/Eigen/src/Core/util/ConfigureVectorization.h @@ -250,15 +250,17 @@ #define EIGEN_VECTORIZE_SSE4_1 #define EIGEN_VECTORIZE_SSE4_2 #endif - #ifdef __FMA__ + #if defined(__FMA__) || (EIGEN_COMP_MSVC && defined(__AVX2__)) + // MSVC does not expose a switch dedicated for FMA + // For MSVC, AVX2 => FMA #define EIGEN_VECTORIZE_FMA #endif #if defined(__AVX512F__) #ifndef __FMA__ #if EIGEN_COMP_GNUC - #warning Please add -mfma to your compiler flags: compiling with -mavx512f alone without SSE/AVX FMA is not supported (bug 1638). + #error Please add -mfma to your compiler flags: compiling with -mavx512f alone without SSE/AVX FMA is not supported (bug 1638). #else - #error Please enable FMA in your compiler flags (e.g. -mfma): compiling with AVX512 alone without SSE/AVX FMA is not supported (bug 1638). + #error Please enable FMA in your compiler flags (e.g. -mfma): compiling with AVX512 alone without SSE/AVX FMA is not supported (bug 1638). #endif #endif #define EIGEN_VECTORIZE_AVX512 |