Fix for the gcc-9 issue.

Fixes #91

Change-Id: I8149771d6add9645126cb94584f46485c256a488

Author: lwesiers

IGC/AdaptorOCL/cif/cif/common/cif.h

@@ -309,6 +309,14 @@ struct InterfacesList {
         requestedInterfaceId, std::forward<DefaultValueT>(defaultValue), std::forward<Args>(args)...);
   }
 
+  /// Calls Callable::Call with all contained interfaces (sequentially, one at a time) as template parameters.
+  /// Arguments will be forwarded as regular function parameters to Callable::Call.
+  template <typename Callable, typename RetType, typename DefaultValueT>
+  static RetType forwardToOne(InterfaceId_t requestedInterfaceId, DefaultValueT &&defaultValue) {
+    return forwardToOneImpl<0, RetType, Callable, DefaultValueT, InterfacePack<SupportedInterfaces...>>(
+        requestedInterfaceId, std::forward<DefaultValueT>(defaultValue));
+  }
+
   /// Calls Callable::Call with all contained interfaces (sequentially, one at a time) as template parameters.
   /// Arguments will be forwarded as regular function parameters to Callable::Call.
   template <typename Callable, typename... Args>

IGC/common/LLVMWarningsPop.hpp

@@ -57,3 +57,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #ifdef _MSC_VER
 #   pragma  warning( pop )
 #endif
+
+#if defined(__linux__)
+#   pragma GCC diagnostic pop
+#endif

IGC/common/LLVMWarningsPush.hpp

@@ -55,8 +55,18 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #   pragma warning( push )
 #endif
 
+#if defined(__linux__)
+#   pragma GCC diagnostic push
+#endif
+
 #include <llvm/Config/llvm-config.h>
 
+#if defined(__linux__)
+#    if __GNUC__ > 8
+#        pragma GCC diagnostic ignored "-Winit-list-lifetime"
+#    endif
+#endif
+
 #if defined( _WIN32 ) || defined( _WIN64 )
 
 // 'inline' : used more than once