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/OCLDeviceAtomic.cpp

@@ -25,8 +25,11 @@
 #include <string.h>
 
 #include "CL/cl.h"
-
+#if EMU_ENV
+static const cl_uint TotalElements = 8 * 32 * 256;
+#else
 static const cl_uint TotalElements = 256 * 1024 * 1024;
+#endif
 static const cl_uint ArraySize = 256;
 static cl_uint hostArray[ArraySize];
 
@@ -45,9 +48,10 @@ const static char* strKernel[] = {
                                 memory_scope_device);
     }
     \n),
+#if EMU_ENV
     KERNEL_CODE(
     \n __kernel void atomic_test1(__global uint* res) {
-      for (uint i = 0; i < 256 * 1024; ++i) {
+      for (uint i = 0; i < 8 * 32; ++i) {
         for (uint j = 0; j < 256; ++j) {
           __global atomic_uint* inc = (__global atomic_uint*)&res[j];
           uint val = atomic_load_explicit(inc, memory_order_acquire,
@@ -61,7 +65,7 @@ const static char* strKernel[] = {
       }
     }
     \n __kernel void atomic_test2(__global uint* res) {
-      if (get_global_id(0) == 64 * 1000 * 1000) {
+      if (get_global_id(0) == 8 * 20 * 100) {
         __global atomic_uint* inc = (__global atomic_uint*)res;
         // atomic_fetch_add_explicit(inc, 1, memory_order_acq_rel,
         // memory_scope_device);
@@ -69,7 +73,33 @@ const static char* strKernel[] = {
                               memory_scope_device);
       }
     }
-    \n)};
+    \n)
+#else
+    KERNEL_CODE(
+    \n __kernel void atomic_test1(__global uint* res) {
+      for (uint i = 0; i < 256 * 1024; ++i) {
+        for (uint j = 0; j < 256; ++j) {
+          __global atomic_uint* inc = (__global atomic_uint*)&res[j];
+          uint val = atomic_load_explicit(inc, memory_order_acquire, memory_scope_device);
+          if (0 != val) {
+            res[1] = get_global_id(0);
+            res[2] = i;
+            return;
+          }
+        }
+      }
+    }
+    \n __kernel void atomic_test2(__global uint* res) {
+      if (get_global_id(0) == 64 * 1000 * 1000) {
+        __global atomic_uint* inc = (__global atomic_uint*)res;
+        // atomic_fetch_add_explicit(inc, 1, memory_order_acq_rel,
+        // memory_scope_device);
+        atomic_store_explicit(inc, get_global_id(0), memory_order_release, memory_scope_device);
+      }
+    }
+    \n)
+#endif
+};
 
 OCLDeviceAtomic::OCLDeviceAtomic()
     : hostQueue_(NULL), failed_(false), kernel2_(NULL) {