Use intrinsics for `cvRound` on x86 and x86_64 `__GNUC__` (clang/gcc linux) too.

We've measured a 7x improvement in speed for `cvRound` using the intrinsic.
1 year ago · 3cce299a78
parent 0052d46b8e
commit 3cce299a78
1 changed files with 2 additions and 2 deletions
--- a/modules/core/include/opencv2/core/fast_math.hpp
+++ b/modules/core/include/opencv2/core/fast_math.hpp
@ -201,7 +201,7 @@ cvRound( double value )
 {
 #if defined CV_INLINE_ROUND_DBL
    CV_INLINE_ROUND_DBL(value);
-#elif (defined _MSC_VER && defined _M_X64) && !defined(__CUDACC__)
+#elif ((defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __SSE2__)) && !defined(__CUDACC__)
    __m128d t = _mm_set_sd( value );
    return _mm_cvtsd_si32(t);
 #elif defined _MSC_VER && defined _M_IX86
@ -323,7 +323,7 @@ CV_INLINE int cvRound(float value)
 {
 #if defined CV_INLINE_ROUND_FLT
    CV_INLINE_ROUND_FLT(value);
-#elif (defined _MSC_VER && defined _M_X64) && !defined(__CUDACC__)
+#elif ((defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __SSE2__)) && !defined(__CUDACC__)
    __m128 t = _mm_set_ss( value );
    return _mm_cvtss_si32(t);
 #elif defined _MSC_VER && defined _M_IX86