IPC prototyps and part of the implementation included

Change-Id: Id88c7f155d23ec63f57a6ef05098fba43f8af336


[ROCm/hip commit: 17b98d59b8]

projects/hip/src/device_util.cpp

@@ -14,8 +14,7 @@ all copies or substantial portions of the Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
@@ -2587,7 +2586,18 @@ __HIP_DEVICE__ double4 make_double4(double x, double y, double z, double w)
     return d4;
 }
 
-__device__ void  __threadfence_system(void){
+
+__HIP_DEVICE__ double  __longlong_as_double(long long int x)
+{
+  return static_cast<double>(x);
+}
+
+__HIP_DEVICE__ long long __double_as_longlong(double x)
+{
+  return static_cast<long long>(x);
+}
+
+__HIP_DEVICE__ void  __threadfence_system(void){
     // no-op
 }
 
@@ -3380,3 +3390,5 @@ __host__ double norm4d(double a, double b, double c, double d)
 {
     return std::sqrt(a*a + b*b + c*c + d*d);
 }
+
+