Update ChangeLog.*

2025-10-17  Michael Meissner  <meissner@linux.ibm.com>

gcc/

	* config/rs6000/rs6000-call.c (init_cumulative_args): Do not issue the
	psabi warning for passing and returning 16-bit floating point calls on
	library functions.
	(rs6000_function_arg): Likewise.

gcc/ChangeLog.float

@@ -1,3 +1,16 @@
+==================== Branch work222-float, patch #341 ====================
+
+Do not issue psabi warning for 16-bit floating point library calls.
+
+2025-10-17  Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config/rs6000/rs6000-call.c (init_cumulative_args): Do not issue the
+	psabi warning for passing and returning 16-bit floating point calls on
+	library functions.
+	(rs6000_function_arg): Likewise.
+
 ==================== Branch work222-float, patch #340 ====================
 
 Fix loading up negative 0 vector 16-bit floating point.

gcc/config/rs6000/rs6000-call.cc

@@ -64,6 +64,7 @@
 #include "ppc-auxv.h"
 #include "targhooks.h"
 #include "opts.h"
+#include "print-tree.h"
 
 #include "rs6000-internal.h"
 
@@ -691,7 +692,7 @@ init_cumulative_args (CUMULATIVE_ARGS *cum, tree fntype,
      future.  The issue is currently 16-bit floating point is returned in
      floating point register #1 in 16-bit format.  We may or may not want to
      return it as a scalar 64-bit value.  */
-  if (fntype && warn_psabi)
+  if (fntype && warn_psabi && !cum->libcall)
     {
       machine_mode ret_mode = TYPE_MODE (TREE_TYPE (fntype));
       if (ret_mode == BFmode || ret_mode == HFmode)
@@ -1659,7 +1660,7 @@ rs6000_function_arg (cumulative_args_t cum_v, const function_arg_info &arg)
      future.  The issue is currently 16-bit floating point values are passed in
      floating point registers in the native 16-bit format.  We may or may not
      want to pass the value it as a scalar 64-bit value.  */
-  if (warn_psabi && (mode == BFmode || mode == HFmode))
+  if (warn_psabi && !cum->libcall && (mode == BFmode || mode == HFmode))
     warning (OPT_Wpsabi, "%s might be passed differently in the future",
 	     mode == BFmode ? "__bfloat16" : "_Float16");