RO Backend: Add support for char, signed char and unsigned char

src/reverse_offload/commands_types.hpp

@@ -50,6 +50,8 @@ enum ro_net_cmds {
 enum ro_net_types {
   RO_NET_FLOAT,
   RO_NET_CHAR,
+  RO_NET_SIGNED_CHAR,
+  RO_NET_UNSIGNED_CHAR,
   RO_NET_DOUBLE,
   RO_NET_INT,
   RO_NET_LONG,

src/reverse_offload/context_ro_tmpl_device.hpp

@@ -41,12 +41,12 @@ struct GetROType<char> {
 
 template <>
 struct GetROType<unsigned char> {
-  static constexpr ro_net_types Type{RO_NET_CHAR};
+  static constexpr ro_net_types Type{RO_NET_UNSIGNED_CHAR};
 };
 
 template <>
 struct GetROType<signed char> {
-  static constexpr ro_net_types Type{RO_NET_CHAR};
+  static constexpr ro_net_types Type{RO_NET_SIGNED_CHAR};
 };
 
 template <>

src/reverse_offload/mpi_transport.cpp

@@ -384,6 +384,12 @@ static MPI_Datatype convertType(ro_net_types type) {
       return MPI_SHORT;
     case RO_NET_LONG_DOUBLE:
       return MPI_LONG_DOUBLE;
+    case RO_NET_CHAR:
+      return MPI_CHAR;
+    case RO_NET_SIGNED_CHAR:
+      return MPI_SIGNED_CHAR;
+    case RO_NET_UNSIGNED_CHAR:
+      return MPI_UNSIGNED_CHAR;
     default:
       fprintf(stderr, "Unknown rocSHMEM type MPI conversion %d\n", type);
       abort();