Hi!
Like for x86-64, alpha or rs6000, nds32 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 <ja...@redhat.com>
PR target/114175
* config/nds32/nds32.cc (nds32_setup_incoming_varargs): Only skip
function arg advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
--- gcc/config/nds32/nds32.cc.jj 2024-01-03 12:01:22.862487765 +0100
+++ gcc/config/nds32/nds32.cc 2024-03-20 16:13:47.460283181 +0100
@@ -2374,7 +2374,8 @@ nds32_setup_incoming_varargs (cumulative
for varargs. */
total_args_regs
= NDS32_MAX_GPR_REGS_FOR_ARGS + NDS32_GPR_ARG_FIRST_REGNUM;
- 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)
num_of_used_regs
= NDS32_AVAILABLE_REGNUM_FOR_GPR_ARG (cum->gpr_offset, arg.mode,
arg.type)
+ NDS32_NEED_N_REGS_FOR_ARG (arg.mode, arg.type);
Jakub
