🚀 go-pugleaf

Dear supporters,

I have defined PUSH_ROUNDING in tm.h,  but gcc still generates
	sub sp, 1, sp
	move sp, r1
	move arg, [r1]
instead of 
	move arg, [--sp]	! this is a pre_dec

this happens if and only if there is only one argument. (e.g.  foo(1)).

According to my debuging,  this is because the following code in
calls.c: expand_call

line 1002:      if (copy_to_evaluate_size >= args_size.constant / 2)
line 1003:	must_preallocate = 1;

in my case,  if ( 0 >= 1 / 2 ) holds.

Is it correct to change this to 
      if (copy_to_evaluate_size &&
	  (copy_to_evaluate_size >= args_size.constant / 2))
or 
      if (copy_to_evaluate_size > args_size.constant / 2))
?

Thanks for your patient help.

Dong