[power-ieee128] fortran: trans-io.c side of -mabi=ieeelongdouble I/O support

[Jakub Jelinek via Gcc-patches]

Hi!

Here is the compiler side of those changes, but depends of course
on the decision what to do with those *real128* and *complex128* symbols.

With all the 4 patches e.g. print *, var for real(kind=16) var; var = 1.0;
works both with -mabi=ibmlongdouble and -mabi=ieeelongdouble.

2022-01-03  Jakub Jelinek  <ja...@redhat.com>

        * trans-io.c (transfer_namelist_element): Use gfc_type_abi_kind,
        formatting fixes.
        (transfer_expr): Use gfc_type_abi_kind, use *REAL128* APIs even
        for abi_kind == 17.

--- gcc/fortran/trans-io.c.jj   2021-12-31 11:00:15.052190585 +0000
+++ gcc/fortran/trans-io.c      2022-01-03 14:20:55.238159269 +0000
@@ -1765,18 +1765,17 @@ transfer_namelist_element (stmtblock_t *
   else
     tmp = build_int_cst (gfc_charlen_type_node, 0);
 
+  int abi_kind = gfc_type_abi_kind (ts);
   if (dtio_proc == null_pointer_node)
-    tmp = build_call_expr_loc (input_location,
-                          iocall[IOCALL_SET_NML_VAL], 6,
-                          dt_parm_addr, addr_expr, string,
-                          build_int_cst (gfc_int4_type_node, ts->kind),
-                          tmp, dtype);
+    tmp = build_call_expr_loc (input_location, iocall[IOCALL_SET_NML_VAL], 6,
+                              dt_parm_addr, addr_expr, string,
+                              build_int_cst (gfc_int4_type_node, abi_kind),
+                              tmp, dtype);
   else
-    tmp = build_call_expr_loc (input_location,
-                          iocall[IOCALL_SET_NML_DTIO_VAL], 8,
-                          dt_parm_addr, addr_expr, string,
-                          build_int_cst (gfc_int4_type_node, ts->kind),
-                          tmp, dtype, dtio_proc, vtable);
+    tmp = build_call_expr_loc (input_location, iocall[IOCALL_SET_NML_DTIO_VAL],
+                              8, dt_parm_addr, addr_expr, string,
+                              build_int_cst (gfc_int4_type_node, abi_kind),
+                              tmp, dtype, dtio_proc, vtable);
   gfc_add_expr_to_block (block, tmp);
 
   /* If the object is an array, transfer rank times:
@@ -2298,7 +2297,7 @@ transfer_expr (gfc_se * se, gfc_typespec
       ts->kind = gfc_index_integer_kind;
     }
 
-  kind = ts->kind;
+  kind = gfc_type_abi_kind (ts);
   function = NULL;
   arg2 = NULL;
   arg3 = NULL;
@@ -2318,14 +2317,14 @@ transfer_expr (gfc_se * se, gfc_typespec
       arg2 = build_int_cst (integer_type_node, kind);
       if (last_dt == READ)
        {
-         if (gfc_real16_is_float128 && ts->kind == 16)
+         if ((gfc_real16_is_float128 && kind == 16) || kind == 17)
            function = iocall[IOCALL_X_REAL128];
          else
            function = iocall[IOCALL_X_REAL];
        }
       else
        {
-         if (gfc_real16_is_float128 && ts->kind == 16)
+         if ((gfc_real16_is_float128 && kind == 16) || kind == 17)
            function = iocall[IOCALL_X_REAL128_WRITE];
          else
            function = iocall[IOCALL_X_REAL_WRITE];
@@ -2337,14 +2336,14 @@ transfer_expr (gfc_se * se, gfc_typespec
       arg2 = build_int_cst (integer_type_node, kind);
       if (last_dt == READ)
        {
-         if (gfc_real16_is_float128 && ts->kind == 16)
+         if ((gfc_real16_is_float128 && kind == 16) || kind == 17)
            function = iocall[IOCALL_X_COMPLEX128];
          else
            function = iocall[IOCALL_X_COMPLEX];
        }
       else
        {
-         if (gfc_real16_is_float128 && ts->kind == 16)
+         if ((gfc_real16_is_float128 && kind == 16) || kind == 17)
            function = iocall[IOCALL_X_COMPLEX128_WRITE];
          else
            function = iocall[IOCALL_X_COMPLEX_WRITE];

        Jakub