[OpenCL] Test on half immediate support.

Reviewers: Anastasia

Reviewed By: Anastasia

Subscribers: yaxunl, cfe-commits, bader

Differential Revision: https://reviews.llvm.org/D33592

llvm-svn: 304134

1 files changed, 17 insertions, 0 deletions

diff --git a/clang/test/CodeGenOpenCL/half.cl b/clang/test/CodeGenOpenCL/half.cl
index 9acabf0a2a8..a10ba4d7f9e 100644
--- a/clang/test/CodeGenOpenCL/half.cl
+++ b/clang/test/CodeGenOpenCL/half.cl
@@ -21,3 +21,20 @@ half test_inc(half x)
 {
   return ++x;
 }
+
+__attribute__((overloadable)) int min(int, int);
+__attribute__((overloadable)) half min(half, half);
+__attribute__((overloadable)) float min(float, float);
+
+__kernel void foo( __global half* buf, __global float* buf2 )
+{
+    buf[0] = min( buf[0], 1.5h );
+// CHECK: half 0xH3E00
+    buf[0] = min( buf2[0], 1.5f );
+// CHECK: float 1.500000e+00
+
+    const half one = 1.6666;
+    buf[1] = min( buf[1], one );
+// CHECK: half 0xH3EAB
+}
+