[Beignet] [PATCH] utests: Add test case for global memory barrier

[Dag Lem]

Signed-off-by: Dag Lem <dag at nimrod.no>
---
 kernels/compiler_global_memory_barrier.cl |  5 +++++
 utests/CMakeLists.txt                     |  1 +
 utests/compiler_global_memory_barrier.cpp | 27 +++++++++++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 kernels/compiler_global_memory_barrier.cl
 create mode 100644 utests/compiler_global_memory_barrier.cpp

diff --git a/kernels/compiler_global_memory_barrier.cl b/kernels/compiler_global_memory_barrier.cl
new file mode 100644
index 0000000..3d57c41
--- /dev/null
+++ b/kernels/compiler_global_memory_barrier.cl
@@ -0,0 +1,5 @@
+__kernel void compiler_global_memory_barrier(__global int *dst, __global int *src) {
+  src[get_local_size(0)*get_group_id(0) + get_local_id(0)] = get_local_id(0);
+  barrier(CLK_GLOBAL_MEM_FENCE);
+  dst[get_group_id(0)*get_local_size(0) + get_local_id(0)] = src[get_local_size(0)*(get_group_id(0) + 1) - 1 - get_local_id(0)];
+}
diff --git a/utests/CMakeLists.txt b/utests/CMakeLists.txt
index d883cfd..2c3077d 100644
--- a/utests/CMakeLists.txt
+++ b/utests/CMakeLists.txt
@@ -71,6 +71,7 @@ set (utests_sources
   compiler_insn_selection_min.cpp
   compiler_insn_selection_max.cpp
   compiler_insn_selection_masked_min_max.cpp
+  compiler_global_memory_barrier.cpp
   compiler_local_memory_two_ptr.cpp
   compiler_local_memory_barrier.cpp
   compiler_local_memory_barrier_wg64.cpp
diff --git a/utests/compiler_global_memory_barrier.cpp b/utests/compiler_global_memory_barrier.cpp
new file mode 100644
index 0000000..eac419d
--- /dev/null
+++ b/utests/compiler_global_memory_barrier.cpp
@@ -0,0 +1,27 @@
+#include "utest_helper.hpp"
+
+static void compiler_global_memory_barrier(void)
+{
+  const size_t n = 1024;
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("compiler_global_memory_barrier");
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(uint32_t), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(uint32_t), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+
+  // Run the kernel
+  globals[0] = n;
+  locals[0] = 16;
+  OCL_NDRANGE(1);
+  OCL_MAP_BUFFER(0);
+
+  // Check results
+  uint32_t *dst = (uint32_t*)buf_data[0];
+  for (uint32_t i = 0; i < n; i+=16)
+    for (uint32_t j = 0; j < 16; ++j)
+      OCL_ASSERT(dst[i+j] == 15-j);
+}
+
+MAKE_UTEST_FROM_FUNCTION(compiler_global_memory_barrier);
-- 
1.8.1.4