new allocator: df must use FRAME_POINTER_REQUIRED

[Richard Henderson]

On Mon, Feb 05, 2001 at 11:28:31PM +0300, Denis Chertykov wrote:
> 	* df.c (df_lr_global_compute): Use FRAME_POINTER_REQUIRED for
>       computing lr_in/lr_out.

This file is missing all sorts of stuff for global register life.
See mark_regs_live_at_end and calculate_global_regs_live in flow.c.

> + 	for (i = 0; i < POINTER_SIZE / BITS_PER_WORD; ++i)

This should instead iterate over HARD_REGNO_NREGS for Pmode.


r~