[Bug bootstrap/92661] [10 Regression] AIX bootstrap failure with builtin-types.def change

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92661

--- Comment #3 from David Edelsohn <dje at gcc dot gnu.org> ---
An alternate work-around is

Index: tree.c
===================================================================
--- tree.c      (revision 278691)
+++ tree.c      (working copy)
@@ -10334,7 +10334,7 @@
   uint64_type_node = make_or_reuse_type (64, 1);

   /* Decimal float types. */
-  if (targetm.decimal_float_supported_p ())
+  if (1)
     {
       dfloat32_type_node = make_node (REAL_TYPE);
       TYPE_PRECISION (dfloat32_type_node) = DECIMAL32_TYPE_SIZE;