[PATCH 06/52] m2: Replace uses of {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE

[Kewen Lin]

Joseph pointed out "floating types should have their mode,
not a poorly defined precision value" in the discussion[1],
as he and Richi suggested, the existing macros
{FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE will be replaced with a
hook mode_for_floating_type.  To be prepared for that, this
patch is to replace use of {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE
in m2 with TYPE_PRECISION of {float,{,long_}double}_type_node.

[1] https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651209.html

gcc/m2/ChangeLog:

        * gm2-gcc/m2type.cc (build_m2_short_real_node): Use TYPE_PRECISION of
        float_type_node to replace FLOAT_TYPE_SIZE.
        (build_m2_real_node): Use TYPE_PRECISION of double_type_node to
        replace DOUBLE_TYPE_SIZE.
        (build_m2_long_real_node): Use TYPE_PRECISION of
        long_double_type_node to replace LONG_DOUBLE_TYPE_SIZE.
---
 gcc/m2/gm2-gcc/m2type.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gcc/m2/gm2-gcc/m2type.cc b/gcc/m2/gm2-gcc/m2type.cc
index 571923c08ef..d52cbdf0b99 100644
--- a/gcc/m2/gm2-gcc/m2type.cc
+++ b/gcc/m2/gm2-gcc/m2type.cc
@@ -1420,7 +1420,7 @@ build_m2_short_real_node (void)
   /* Define `REAL'.  */
 
   c = make_node (REAL_TYPE);
-  TYPE_PRECISION (c) = FLOAT_TYPE_SIZE;
+  TYPE_PRECISION (c) = TYPE_PRECISION (float_type_node);
   layout_type (c);
   return c;
 }
@@ -1433,7 +1433,7 @@ build_m2_real_node (void)
   /* Define `REAL'.  */
 
   c = make_node (REAL_TYPE);
-  TYPE_PRECISION (c) = DOUBLE_TYPE_SIZE;
+  TYPE_PRECISION (c) = TYPE_PRECISION (double_type_node);
   layout_type (c);
   return c;
 }
@@ -1447,7 +1447,7 @@ build_m2_long_real_node (void)
   if (M2Options_GetIBMLongDouble ())
     {
       longreal = make_node (REAL_TYPE);
-      TYPE_PRECISION (longreal) = LONG_DOUBLE_TYPE_SIZE;
+      TYPE_PRECISION (longreal) = TYPE_PRECISION (long_double_type_node);
     }
   else if (M2Options_GetIEEELongDouble ())
     longreal = float128_type_node;
-- 
2.43.0