x86_64/elf: only variadic calls need rax

2016-08-17 06:12:11 -07:00 · 2016-08-17 06:12:11 -07:00 · c948732efa
parent 0373fe0e2a
commit c948732efa
1 changed files with 2 additions and 1 deletions
--- a/x86_64-gen.c
+++ b/x86_64-gen.c
@ -1441,7 +1441,8 @@ void gfunc_call(int nb_args)
        }
    }

-    oad(0xb8, nb_sse_args < 8 ? nb_sse_args : 8); /* mov nb_sse_args, %eax */
+    if (vtop->type.ref->c != FUNC_NEW) /* implies FUNC_OLD or FUNC_ELLIPSIS */
+        oad(0xb8, nb_sse_args < 8 ? nb_sse_args : 8); /* mov nb_sse_args, %eax */
    gcall_or_jmp(0);
    if (args_size)
        gadd_sp(args_size);