[PATCH] Improved loop lowering for C++

[Diego Novillo]

Roger Sayle wrote:

> 	* c-gimplify.c (gimplify_c_loop): Improve initial implementations
> 	for loops whose conditions are known at compile-time.
> 	* gimplify.c (append_to_statement_list_1): Remove side_effects
> 	parameter, this function should never be called if its false.
> 	(append_to_statement_list): Only call append_to_statement_list_1
> 	if t is non-NULL tree with side-effects.
> 	(append_to_statement_list_force):  Likewise, if t is not NULL.
> 
Looks OK.


Diego.