Patch for jump optimization

[Richard Henderson]

On Tue, Feb 03, 1998 at 12:06:56AM -0700, Jeffrey A Law wrote:
>   > (jump_insn 52 51 54 (set (pc)
>   >         (if_then_else (eq (reg:DI 102)
>   >                 (const_int 0))
>   >             (label_ref 56)
>   >             (pc))) 178 {umindi3+2} (nil)
>   >     (nil))
>
> What field number was NULL (ie, what is the value of 'i' when it failed)?

6 -- that (nil) up there.

> The real bug might be elsewhere...

I'm inclined to think those modified_in_p calls you added
shouldn't be passing in temp, but rather PATTERN(temp).


r~