D calling convention

[Tomas Lindquist Olsen]

Walter Bright wrote:
> Christian Kamm wrote:
>> One point we couldn't understand though, is the reversal of parameters 
>> when
>> calling some D functions: Parameters are usually passed right-to-left,
>> except for nonvariadic D functions, where the order changes to
>> left-to-right.
>> What is the reason for it?
> 
> The reason is because I'd eventually like to specify the order of 
> evaluation of function arguments as being left to right. So, for normal 
> D functions, this makes for optimal code generation. The only time 
> monkey business would have to happen would be to support the C calling 
> convention or the variadic one.

What do you think of the "proposal"?, I think it could be quite valuable and the current setup 
makes has some odd behaviour.

Take the TypeInfo_Struct.xopCmp for example. Here a member function pointer is assigned to a 
static function pointer, the result being that you have to call it with parameters reversed for 
things to work as you expect, but only when x86 ABI is in effect.