[LLVMdev] def use at O0

zeng jane zjane12 at gmail.com
Mon Dec 7 13:04:51 PST 2009

Can some one help please ?
To give a broader context here, I feel O0 would be good starting point for a
fast compiler but I would like to add some optimizations to it after
register allocation.

Thoughts on the topic would be of great help to me


On Sun, Dec 6, 2009 at 12:39 AM, zeng jane <zjane12 at gmail.com> wrote:

> Hi all
>     I would like to have access to def-use relationships at O0 , for now
> after register allocation. So my question is
> 1.  is there any such existing information ? If not, do i need to build it
> from scratch by traversing all the instructions and operands ?
> 2. While for now I only need it Post RA but eventually I want to use it
> before RA as well. Suggestions on how i can go abt that would help me reuse
> code/def-use data would be great !
> thanks for all help !
> zeng
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