[Beignet] [PATCH 2/2] add utest compiler_overflow for llvm intrinsic function.

[xionghu.luo at intel.com]

From: Luo Xionghu <xionghu.luo at intel.com>

this case only runs for uadd_with_over_flow function so far.

Signed-off-by: Luo Xionghu <xionghu.luo at intel.com>
---
 kernels/compiler_overflow.cl |   21 ++++++++++++++
 utests/CMakeLists.txt        |    1 +
 utests/compiler_overflow.cpp |   63 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+)
 create mode 100644 kernels/compiler_overflow.cl
 create mode 100644 utests/compiler_overflow.cpp

diff --git a/kernels/compiler_overflow.cl b/kernels/compiler_overflow.cl
new file mode 100644
index 0000000..5874789
--- /dev/null
+++ b/kernels/compiler_overflow.cl
@@ -0,0 +1,21 @@
+uint add128(__global uint4 *A, uint4 B)
+{
+  *A += B;
+  uint4 carry = -convert_uint4((*A) < B);
+
+  (*A).y += carry.x;
+  carry.y += ((*A).y < carry.x);
+  (*A).z += carry.y;
+
+  carry.z += ((*A).z < carry.y);
+  (*A).w += carry.z;
+  return carry.w + ((*A).w < carry.z);
+}
+
+__kernel void
+compiler_overflow_uint4(__global uint4 *src, __global uint4 *dst)
+{
+   add128(&src[get_global_id(0)], 1);
+   dst[get_global_id(0)] = src[get_global_id(0)];
+
+}
diff --git a/utests/CMakeLists.txt b/utests/CMakeLists.txt
index cf3addc..bd1c65f 100644
--- a/utests/CMakeLists.txt
+++ b/utests/CMakeLists.txt
@@ -104,6 +104,7 @@ set (utests_sources
   compiler_write_only.cpp
   compiler_write_only_shorts.cpp
   compiler_switch.cpp
+  compiler_overflow.cpp
   compiler_math.cpp
   compiler_atomic_functions.cpp
   compiler_async_copy.cpp
diff --git a/utests/compiler_overflow.cpp b/utests/compiler_overflow.cpp
new file mode 100644
index 0000000..465dbc5
--- /dev/null
+++ b/utests/compiler_overflow.cpp
@@ -0,0 +1,63 @@
+#include "utest_helper.hpp"
+
+namespace {
+typedef struct {
+  uint32_t x;
+  uint32_t y;
+  uint32_t z;
+  uint32_t w;
+} uint4;
+
+template<typename T>
+void test(const char *kernel_name)
+{
+  const size_t n = 16;
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL_FROM_FILE("compiler_overflow", kernel_name);
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(T), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(T), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+
+  OCL_MAP_BUFFER(0);
+  for (uint32_t i = 0; i < n; ++i) {
+    ((T*)buf_data[0])[i].x = 0xffffffff;
+    ((T*)buf_data[0])[i].y = 0xffffffff;
+    ((T*)buf_data[0])[i].z = 0xffffffff;
+    ((T*)buf_data[0])[i].w = i;
+  }
+  OCL_UNMAP_BUFFER(0);
+  OCL_MAP_BUFFER(1);
+  for (uint32_t i = 0; i < n; ++i) {
+    ((T*)buf_data[1])[i].x = i;
+    ((T*)buf_data[1])[i].y = i;
+    ((T*)buf_data[1])[i].z = i;
+    ((T*)buf_data[1])[i].w = i;
+  }
+  OCL_UNMAP_BUFFER(1);
+
+  globals[0] = n;
+  locals[0] = 16;
+  OCL_NDRANGE(1);
+
+  OCL_MAP_BUFFER(1);
+  for (uint32_t i = 0; i < 16; ++i) {
+    OCL_ASSERT(((T*)buf_data[1])[i].x == 0);
+    OCL_ASSERT(((T*)buf_data[1])[i].y == 1);
+    OCL_ASSERT(((T*)buf_data[1])[i].z == 1);
+    OCL_ASSERT(((T*)buf_data[1])[i].w == i+2);
+  }
+  OCL_UNMAP_BUFFER(1);
+}
+
+}
+
+#define compiler_overflow(type, kernel) \
+static void compiler_overflow_ ##type(void)\
+{\
+  test<type>(# kernel);\
+}\
+MAKE_UTEST_FROM_FUNCTION(compiler_overflow_ ## type);
+
+compiler_overflow(uint4, compiler_overflow_uint4)
-- 
1.7.9.5