[gcc r13-8514] epiphany: Fix up epiphany_setup_incoming_varargs [PR114175]

[gcc r13-8514] epiphany: Fix up epiphany_setup_incoming_varargs [PR114175]

[Jakub Jelinek]

https://gcc.gnu.org/g:fce980ba3802e1adc68cb34ae81d17bc8c9d13b9

commit r13-8514-gfce980ba3802e1adc68cb34ae81d17bc8c9d13b9
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Mar 20 16:59:21 2024 +0100

    epiphany: Fix up epiphany_setup_incoming_varargs [PR114175]
    
    Like for x86-64, alpha or rs6000, epiphany 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/epiphany/epiphany.cc (epiphany_setup_incoming_varargs): Only
            skip function arg advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
            if arg.type is NULL.
    
    (cherry picked from commit b089ceb365e5132e4b2a8acfb18127bbee2d0d00)

Diff:
---
 gcc/config/epiphany/epiphany.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/config/epiphany/epiphany.cc b/gcc/config/epiphany/epiphany.cc
index fdd4df71456..ab707d9a9f7 100644
--- a/gcc/config/epiphany/epiphany.cc
+++ b/gcc/config/epiphany/epiphany.cc
@@ -731,7 +731,8 @@ epiphany_setup_incoming_varargs (cumulative_args_t cum,
     gcc_assert (arg.mode != BLKmode);
 
   next_cum = *get_cumulative_args (cum);
-  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)
     next_cum = (ROUND_ADVANCE_CUM (next_cum, arg.mode, arg.type)
 		+ ROUND_ADVANCE_ARG (arg.mode, arg.type));
   first_anon_arg = next_cum;