Re: [tree-ssa] [RFC] loop versioning

[Andrew Pinski <pinskia at physics dot uc dot edu>]

On Jan 5, 2004, at 18:21, Devang Patel wrote:

> Hi All,
>
> I'd like to receive feedback about the loop versioning transformation
> I am implementing. This is work in progress. Right now it does not
> work over SSA and I'm working on it. I just ported it for LNO sources
> and I haven't tested it in new environment. Two top things in my todo
> list are 1) make it work over SSA 2) use walk_tree. I am more 
> interested
> in feedback about cfg manipulating code, because this is a new 
> territory
> for me.
>
> Thank you,
> --
> Devang
>
> 2003-01-05  Devang Patel <dpatel@apple.com>
>
>         * tree-lv.h: New file.
>         * tree-lv.c: New file.
>         * Makefile.in (OBJS-common): Add tree-lv.o.
>         (tree-lv.o): New rule.
>         * tree-cfg.c (create_bb): Make externally visible.
>         * tree-flow.h (create_bb): New extern decl.
>
> <loop_version.lno.0.diff>


To copy any basic block, I would use tree_duplicate_bb unless you really
need something different as you are duplicating a large amount of code 
that
is already written.

Thanks,
Andrew Pinski