fix scalarizing of llvm phi node

llvm phi node can have odd number of args.
this patch also contains a test case.

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

1 files changed, 13 insertions, 0 deletions

diff --git a/kernels/compiler_vector_inc.cl b/kernels/compiler_vector_inc.cl
new file mode 100644
index 00000000..548dcb4f
--- /dev/null
+++ b/kernels/compiler_vector_inc.cl
@@ -0,0 +1,13 @@
+kernel void compiler_vector_inc(global char *dst, global char *src) {
+    size_t i = get_global_id(0);
+    char2 dst2 = vload2(i, dst);
+    if (src[i] == 0)
+      dst2++;
+    else if(src[i] == 1)
+      ++dst2;
+    else if(src[i] == 2)
+      dst2--;
+    else
+      --dst2;
+    vstore2(dst2, i, dst);
+}