lm32: Skip last named param when computing save varargs regs

The cumulative args value in setup_incoming_varargs points at
the last named parameter. We need to skip over that (if present) to
get to the first anonymous argument as we only want to include
those anonymous args in the saved register block.

gcc/
	* config/lm32/lm32.cc (lm32_setup_incoming_varargs): Skip last
	named parameter when preparing to flush registers with unnamed
	arguments to th stack.

diff --git a/gcc/config/lm32/lm32.cc b/gcc/config/lm32/lm32.cc
index d78efc59da5fceccf7b3d5d9b1ca20335acea530..dfec28608a0a2f261362e6d47da5cb1ad0807964 100644 (file)
--- a/gcc/config/lm32/lm32.cc
+++ b/gcc/config/lm32/lm32.cc
@@ -679,14 +679,18 @@ lm32_setup_incoming_varargs (cumulative_args_t cum_v,
                             const function_arg_info &arg,
                             int *pretend_size, int no_rtl)
 {
-  CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
+  CUMULATIVE_ARGS next_cum = *get_cumulative_args (cum_v);
   int first_anon_arg;
   tree fntype;
 
   fntype = TREE_TYPE (current_function_decl);
 
+  if (!TYPE_NO_NAMED_ARGS_STDARG_P (TREE_TYPE (current_function_decl))
+      || arg.type != NULL_TREE)
+    lm32_function_arg_advance (pack_cumulative_args (&next_cum), arg);
+
   if (stdarg_p (fntype))
-    first_anon_arg = *cum + LM32_FIRST_ARG_REG;
+    first_anon_arg = next_cum + LM32_FIRST_ARG_REG;
   else
     {
       /* this is the common case, we have been passed details setup
@@ -697,7 +701,7 @@ lm32_setup_incoming_varargs (cumulative_args_t cum_v,
       int size = arg.promoted_size_in_bytes ();
 
       first_anon_arg =
-       *cum + LM32_FIRST_ARG_REG +
+       next_cum + LM32_FIRST_ARG_REG +
        ((size + UNITS_PER_WORD - 1) / UNITS_PER_WORD);
     }