visium: Fix up visium_setup_incoming_varargs [PR114175]

Like for x86-64, alpha or rs6000, visium seems to be affected too.

Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.

2024-03-20  Jakub Jelinek  <jakub@redhat.com>

	PR target/114175
	* config/visium/visium.cc (visium_setup_incoming_varargs): Only skip
	TARGET_FUNCTION_ARG_ADVANCE for TYPE_NO_NAMED_ARGS_STDARG_P functions
	if arg.type is NULL.

(cherry picked from commit b05ee9b69e4644cefbb94a768c4ea302fd44b934)

diff --git a/gcc/config/visium/visium.cc b/gcc/config/visium/visium.cc
index ec4c2e9ae5cb0b5322b731d6bd6ed65964c17b0b..1f9ce9b9fcd7be1338b13d269b53dd70be2e65e2 100644 (file)
--- a/gcc/config/visium/visium.cc
+++ b/gcc/config/visium/visium.cc
@@ -1481,7 +1481,8 @@ visium_setup_incoming_varargs (cumulative_args_t pcum_v,
   /* The caller has advanced ARGS_SO_FAR up to, but not beyond, the last named
      argument.  Advance a local copy of ARGS_SO_FAR past the last "real" named
      argument, to find out how many registers are left over.  */
-  if (!TYPE_NO_NAMED_ARGS_STDARG_P (TREE_TYPE (current_function_decl)))
+  if (!TYPE_NO_NAMED_ARGS_STDARG_P (TREE_TYPE (current_function_decl))
+      || arg.type != NULL_TREE)
     TARGET_FUNCTION_ARG_ADVANCE (local_args_so_far, arg);
 
   /* Find how many registers we need to save.  */