[gcc r15-1362] m2: Remove uses of {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE

[Kewen Lin]

https://gcc.gnu.org/g:96fe23eb8a9ebac6b64aeb55db88d219177a345a

commit r15-1362-g96fe23eb8a9ebac6b64aeb55db88d219177a345a
Author: Kewen Lin <linkw@linux.ibm.com>
Date:   Sun Jun 16 21:50:19 2024 -0500

    m2: Remove uses of {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE
    
    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 remove uses of {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE
    in m2.  Currently they are used for assertion and can be
    replaced with TYPE_SIZE check on the corresponding type node,
    since we dropped the call to layout_type which would early
    return once TYPE_SIZE is set and this assertion ensures it's
    safe to drop that call.
    
    [1] https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651209.html
    
    gcc/m2/ChangeLog:
    
            * gm2-gcc/m2type.cc (build_m2_short_real_node): Adjust assertion with
            TYPE_SIZE check.
            (build_m2_real_node): Likewise.
            (build_m2_long_real_node): Add assertion with TYPE_SIZE check.

Diff:
---
 gcc/m2/gm2-gcc/m2type.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gcc/m2/gm2-gcc/m2type.cc b/gcc/m2/gm2-gcc/m2type.cc
index 5773a5cbd190..7ed184518cb1 100644
--- a/gcc/m2/gm2-gcc/m2type.cc
+++ b/gcc/m2/gm2-gcc/m2type.cc
@@ -1416,7 +1416,7 @@ static tree
 build_m2_short_real_node (void)
 {
   /* Define `SHORTREAL'.  */
-  ASSERT_CONDITION (TYPE_PRECISION (float_type_node) == FLOAT_TYPE_SIZE);
+  ASSERT_CONDITION (TYPE_SIZE (float_type_node));
   return float_type_node;
 }
 
@@ -1424,7 +1424,7 @@ static tree
 build_m2_real_node (void)
 {
   /* Define `REAL'.  */
-  ASSERT_CONDITION (TYPE_PRECISION (double_type_node) == DOUBLE_TYPE_SIZE);  
+  ASSERT_CONDITION (TYPE_SIZE (double_type_node));
   return double_type_node;
 }
 
@@ -1432,12 +1432,13 @@ static tree
 build_m2_long_real_node (void)
 {
   tree longreal;
-  
+
   /* Define `LONGREAL'.  */
   if (M2Options_GetIEEELongDouble ())
     longreal = float128_type_node;
   else
     longreal = long_double_type_node;
+  ASSERT_CONDITION (TYPE_SIZE (longreal));
   return longreal;
 }