where can I get gcc optimizations information

[Sunzir Deepur]

Hi

On 3/12/07, Andrew Haley <aph@redhat.com> wrote:
> Juan Castillo writes:
>  > > Juan Castillo writes:
>  > > However, some things will help you.  -fverbose-asm produces a list of
>  > > optimization passes.  The dumps "-da" and "-fdump-tree-all" produce a
>  > > lot of files, one per optimization pass, so you can see what each pass
>  > > did.  Once you know which pass does what, you can start to look at the
>  > > code.

What is the difference between -fdump-tree-all and -fdump-rtl-all ?

what does the -da annotations mean ?

Thanks
sunzir