Test case for integer division arithmetic ~

Signed-off-by: Homer Hsing <homer.xing@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/utests/compiler_integer_division.cpp b/utests/compiler_integer_division.cpp
new file mode 100644
index 00000000..3898ae1e
--- /dev/null
+++ b/utests/compiler_integer_division.cpp
@@ -0,0 +1,44 @@
+#include "utest_helper.hpp"
+
+static void cpu(int global_id, int *src, int *dst, int x) {
+  dst[global_id] = src[global_id] / x;
+}
+
+void compiler_integer_division(void)
+{
+  const size_t n = 16;
+  int cpu_dst[16], cpu_src[16];
+  const int x = 7;
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("compiler_integer_division");
+  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]);
+  OCL_SET_ARG(2, sizeof(x), &x);
+  globals[0] = 16;
+  locals[0] = 16;
+
+  // Run random tests
+  for (uint32_t pass = 0; pass < 8; ++pass) {
+    OCL_MAP_BUFFER(0);
+    for (int32_t i = 0; i < (int32_t) n; ++i)
+      cpu_src[i] = ((int32_t*)buf_data[0])[i] = rand() % 1000;
+    OCL_UNMAP_BUFFER(0);
+
+    // Run the kernel on GPU
+    OCL_NDRANGE(1);
+
+    // Run on CPU
+    for (int32_t i = 0; i <(int32_t) n; ++i) cpu(i, cpu_src, cpu_dst, x);
+
+    // Compare
+    OCL_MAP_BUFFER(1);
+    for (int32_t i = 0; i < 11; ++i)
+      OCL_ASSERT(((int32_t*)buf_data[1])[i] == cpu_dst[i]);
+    OCL_UNMAP_BUFFER(1);
+  }
+}
+
+MAKE_UTEST_FROM_FUNCTION(compiler_integer_division);