Question about constraints and reload

[Peter Barada]

>We really needs a target-dependent hook to allow reordering of the stack
>slots before any code is generated. We did this as a Renesas project, and
>saw a significant performance improvement on the SH; it should also help
>MIPS16/Thumb signification, and even Alpha/PPC/MIPS targets if somebody
>allocates a 32k array at the bottom of the stack.

M68000/Coldfire gets a benifit from this as well since they can only
do signed 16 bit offset addressing from the frame/stack pointer.

-- 
Peter Barada
peter@the-baradas.com