darwin: Replace use of 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 replace use of LONG_DOUBLE_TYPE_SIZE in darwin
with TYPE_PRECISION of long_double_type_node.

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

gcc/ChangeLog:

	* config/darwin.cc (darwin_patch_builtins): Use TYPE_PRECISION of
	long_double_type_node to replace LONG_DOUBLE_TYPE_SIZE.

diff --git a/gcc/config/darwin.cc b/gcc/config/darwin.cc
index 63b8c509405d22c0b5356a95337e907bc43062bd..9129378be3739b93a58bb9011b79934c7f874614 100644 (file)
--- a/gcc/config/darwin.cc
+++ b/gcc/config/darwin.cc
@@ -3620,7 +3620,7 @@ darwin_patch_builtin (enum built_in_function fncode)
 void
 darwin_patch_builtins (void)
 {
-  if (LONG_DOUBLE_TYPE_SIZE != 128)
+  if (TYPE_PRECISION (long_double_type_node) != 128)
     return;
 
 #define PATCH_BUILTIN(fncode) darwin_patch_builtin (fncode);