Merge pull request #22179 from hanliutong:new-rvv

[GSoC] New universal intrinsic backend for RVV

* Add new rvv backend (partially implemented).

* Modify the framework of Universal Intrinsic.

* Add CV_SIMD macro guards to current UI code.

* Use vlanes() instead of nlanes.

* Modify the UI test.

* Enable the new RVV (scalable) backend.

* Remove whitespace.

* Rename and some others modify.

* Update intrin.hpp but still not work on AVX/SSE

* Update conditional compilation macros.

* Use static variable for vlanes.

* Use max_nlanes for array defining.

modules/gapi/src/backends/fluid/gfluidcore_func.dispatch.cpp

@@ -6,6 +6,8 @@
 
 #if !defined(GAPI_STANDALONE)
 
+#include <opencv2/core/hal/intrin.hpp>
+#if CV_SIMD
 #include "gfluidcore_func.hpp"
 #include "gfluidcore_func.simd.hpp"
 
@@ -14,7 +16,6 @@
 #include "gfluidutils.hpp"
 
 #include <opencv2/core/cvdef.h>
-#include <opencv2/core/hal/intrin.hpp>
 
 #include <cmath>
 #include <cstdlib>
@@ -394,5 +395,5 @@ CONVERTTO_SCALED_SIMD(float, float)
 } // namespace fluid
 } // namespace gapi
 } // namespace cv
-
+#endif // CV_SIMD
 #endif // !defined(GAPI_STANDALONE)

modules/gapi/src/backends/fluid/gfluidcore_func.hpp

@@ -6,7 +6,7 @@
 
 #pragma once
 
-#if !defined(GAPI_STANDALONE)
+#if !defined(GAPI_STANDALONE) && CV_SIMD
 
 #include <opencv2/core.hpp>