1 files changed, 32 insertions, 0 deletions
diff --git a/utests/compiler_get_max_sub_group_size.cpp b/utests/compiler_get_max_sub_group_size.cpp
new file mode 100644
index 00000000..debdf940
--- /dev/null
+++ b/utests/compiler_get_max_sub_group_size.cpp
@@ -0,0 +1,32 @@
+#include "utest_helper.hpp"
+
+void compiler_get_max_sub_group_size(void)
+{
+  const size_t n = 256;
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("compiler_get_max_sub_group_size");
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(int), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+
+  globals[0] = n;
+  locals[0] = 16;
+
+  OCL_MAP_BUFFER(0);
+  for (int32_t i = 0; i < (int32_t) n; ++i)
+    ((int*)buf_data[0])[i] = -1;
+  OCL_UNMAP_BUFFER(0);
+
+  // Run the kernel on GPU
+  OCL_NDRANGE(1);
+
+  // Compare
+  OCL_MAP_BUFFER(0);
+  int* dst = (int *)buf_data[0];
+  for (int32_t i = 0; i < (int32_t) n; ++i){
+    OCL_ASSERT(8 == dst[i] || 16 == dst[i]);
+  }
+  OCL_UNMAP_BUFFER(0);
+}
+
+MAKE_UTEST_FROM_FUNCTION(compiler_get_max_sub_group_size);