build: workaround for missing _mm256_setr_m128 in GCC

alalek · alalek · commit ec47a0a6def8 · 2017-01-26T18:39:38.000+03:00
diff --git a/modules/imgproc/src/corner.cpp b/modules/imgproc/src/corner.cpp
@@ -113,9 +113,16 @@ static inline void store_interleave(float* ptr, const __m256& a, const __m256& b
     v_transpose4x4(v_uint32x4(a1), v_uint32x4(b1), v_uint32x4(c1), z, u0, u1, u2, u3);
     v_pack4x3to3x4(u0.val, u1.val, u2.val, u3.val, a1, b1, c1);
 
+#if !defined(__GNUC__) || defined(__INTEL_COMPILER)
     _mm256_storeu_ps(ptr, _mm256_setr_m128(_mm_castsi128_ps(a0), _mm_castsi128_ps(b0)));
     _mm256_storeu_ps(ptr + 8, _mm256_setr_m128(_mm_castsi128_ps(c0), _mm_castsi128_ps(a1)));
     _mm256_storeu_ps(ptr + 16,  _mm256_setr_m128(_mm_castsi128_ps(b1), _mm_castsi128_ps(c1)));
+#else
+    // GCC: workaround for missing AVX intrinsic: "_mm256_setr_m128()"
+    _mm256_storeu_ps(ptr, _mm256_insertf128_ps(_mm256_castps128_ps256(_mm_castsi128_ps(a0)), _mm_castsi128_ps(b0), 1));
+    _mm256_storeu_ps(ptr + 8, _mm256_insertf128_ps(_mm256_castps128_ps256(_mm_castsi128_ps(c0)), _mm_castsi128_ps(a1), 1));
+    _mm256_storeu_ps(ptr + 16,  _mm256_insertf128_ps(_mm256_castps128_ps256(_mm_castsi128_ps(b1)), _mm_castsi128_ps(c1), 1));
+#endif
 }
 #endif // CV_AVX
 
