diff --git a/clang/lib/Headers/__clang_hip_libdevice_declares.h b/clang/lib/Headers/__clang_hip_libdevice_declares.h
--- a/clang/lib/Headers/__clang_hip_libdevice_declares.h
+++ b/clang/lib/Headers/__clang_hip_libdevice_declares.h
@@ -288,6 +288,9 @@
 
 __device__ __attribute__((const)) _Float16 __ocml_ceil_f16(_Float16);
 __device__ _Float16 __ocml_cos_f16(_Float16);
+__device__ __attribute__((const)) _Float16 __ocml_cvtrtn_f16_f32(float);
+__device__ __attribute__((const)) _Float16 __ocml_cvtrtp_f16_f32(float);
+__device__ __attribute__((const)) _Float16 __ocml_cvtrtz_f16_f32(float);
 __device__ __attribute__((pure)) _Float16 __ocml_exp_f16(_Float16);
 __device__ __attribute__((pure)) _Float16 __ocml_exp10_f16(_Float16);
 __device__ __attribute__((pure)) _Float16 __ocml_exp2_f16(_Float16);