SWDEV-1 - Add EMU_ENV option

Fix FEAT-39125
Add EMU_ENV option. If it is ON, the building is for
emulation environment, thus some logics can be adjusted
to match emulation environment. If it is OFF, the
building is for regular environment.
Currently only ocltst will use the option. But it can
be used for other modules.

Change-Id: I54e1bc1309e82794b41fca2ae1f01f004138dced

opencl/tests/ocltst/module/runtime/OCLDynamic.cpp

@@ -25,8 +25,11 @@
 #include <string.h>
 
 #include "CL/cl.h"
-
+#if EMU_ENV
+static const cl_uint TotalElements = 1;
+#else
 static const cl_uint TotalElements = 128;
+#endif  // EMU_ENV
 static cl_uint hostArray[TotalElements];
 
 #define KERNEL_CODE(...) #__VA_ARGS__
@@ -144,8 +147,11 @@ void OCLDynamic::open(unsigned int test, char* units, double& conversion,
       &hostArray, &error_);
   CHECK_RESULT((error_ != CL_SUCCESS), "clCreateBuffer() failed");
   buffers_.push_back(buffer);
+#if EMU_ENV
+  cl_uint queueSize = 1;
+#else
   cl_uint queueSize = (test == 0) ? 1 : 257 * 1024;
-
+#endif  // EMU_ENV
 #if defined(CL_VERSION_2_0)
   const cl_queue_properties cprops[] = {
       CL_QUEUE_PROPERTIES,
@@ -194,7 +200,11 @@ void OCLDynamic::run(void) {
   CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueMapBuffer() failed");
 
   error_ = _wrapper->clEnqueueNDRangeKernel(cmdQueues_[_deviceId], kernel_, 1,
+#if EMU_ENV
+                                            NULL, gws, NULL, 0, NULL, NULL);
+#else
                                             NULL, gws, lws, 0, NULL, NULL);
+#endif  // EMU_ENV
   CHECK_RESULT((error_ != CL_SUCCESS), "clEnqueueNDRangeKernel() failed");
 
   _wrapper->clFinish(cmdQueues_[_deviceId]);