variadic functions have always cdelc calling convention

[r14810]

diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index 0779190..eb7df11 100644 (file)
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -1608,10 +1608,15 @@ static void ia32_get_call_abi(const void *self, ir_type *method_type, be_abi_cal
        /* set parameter passing style */
        be_abi_call_set_flags(abi, call_flags, &ia32_abi_callbacks);
 
-       cc = get_method_calling_convention(method_type);
-       if (get_method_additional_properties(method_type) & mtp_property_private) {
-               /* set the calling conventions to register parameter */
-               cc = (cc & ~cc_bits) | cc_reg_param;
+       if (get_method_variadicity(method_type) == variadicity_variadic) {
+               /* pass all parameters of a variadic function on the stack */
+               cc = cc_cdecl_set;
+       } else {
+               cc = get_method_calling_convention(method_type);
+               if (get_method_additional_properties(method_type) & mtp_property_private) {
+                       /* set the calling conventions to register parameter */
+                       cc = (cc & ~cc_bits) | cc_reg_param;
+               }
        }
        n = get_method_n_params(method_type);
        for (i = regnum = 0; i < n; i++) {