3 files changed, 54 insertions, 0 deletions
diff --git a/kernels/builtin_shuffle.cl b/kernels/builtin_shuffle.cl
new file mode 100644
index 00000000..ad988b9e
--- /dev/null
+++ b/kernels/builtin_shuffle.cl
@@ -0,0 +1,8 @@
+kernel void builtin_shuffle(global float *src1, global float *src2, global float *dst1, global float *dst2) {
+  int i = get_global_id(0);
+  float2 src = (float2)(src1[i], src2[i]);
+  uint2 mask = (uint2)(1, 0);
+  float2 dst = shuffle(src, mask);
+  dst1[i] = dst.s0;
+  dst2[i] = dst.s1;
+}
diff --git a/utests/CMakeLists.txt b/utests/CMakeLists.txt
index db510be7..e4c5a3cd 100644
--- a/utests/CMakeLists.txt
+++ b/utests/CMakeLists.txt
@@ -106,6 +106,7 @@ set (utests_sources
   builtin_modf.cpp
   builtin_nextafter.cpp
   builtin_remquo.cpp
+  builtin_shuffle.cpp
   builtin_sign.cpp
   buildin_work_dim.cpp
   builtin_global_size.cpp
diff --git a/utests/builtin_shuffle.cpp b/utests/builtin_shuffle.cpp
new file mode 100644
index 00000000..c7fa86ba
--- /dev/null
+++ b/utests/builtin_shuffle.cpp
@@ -0,0 +1,45 @@
+#include "utest_helper.hpp"
+
+void builtin_shuffle(void)
+{
+  const int n = 32;
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("builtin_shuffle");
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[2], 0, n * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[3], 0, n * sizeof(float), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
+  OCL_SET_ARG(3, sizeof(cl_mem), &buf[3]);
+  globals[0] = n;
+  locals[0] = 16;
+
+  OCL_MAP_BUFFER(0);
+  OCL_MAP_BUFFER(1);
+  for (int i = 0; i < n; i ++) {
+    ((float *)(buf_data[0]))[i] = rand();
+    ((float *)(buf_data[1]))[i] = rand();
+  }
+  OCL_UNMAP_BUFFER(0);
+  OCL_UNMAP_BUFFER(1);
+
+  OCL_NDRANGE(1);
+
+  OCL_MAP_BUFFER(0);
+  OCL_MAP_BUFFER(1);
+  OCL_MAP_BUFFER(2);
+  OCL_MAP_BUFFER(3);
+  for (int i = 0; i < n; i ++) {
+    OCL_ASSERT(((float *)(buf_data[0]))[i] == ((float *)(buf_data[3]))[i]);
+    OCL_ASSERT(((float *)(buf_data[1]))[i] == ((float *)(buf_data[2]))[i]);
+  }
+  OCL_UNMAP_BUFFER(0);
+  OCL_UNMAP_BUFFER(1);
+  OCL_UNMAP_BUFFER(2);
+  OCL_UNMAP_BUFFER(3);
+}
+
+MAKE_UTEST_FROM_FUNCTION(builtin_shuffle);