[tree-ssa] Any good sources of documentation?
Diego Novillo
dnovillo@redhat.com
Mon May 19 13:40:00 GMT 2003
On Mon, 2003-05-19 at 04:22, Marty Hauff wrote:
> I'm trying to find out how the tree-ssa branch performs its
> compilation and optimisation. I've found the doxygen stuff on the web
> but I need something a bit higher level at this stage.
>
Most documentation is in the source code itself. There is a high-level
description of the optimization process in the project page
(http://gcc.gnu.org/projects/tree-ssa/). After the GCC summit next
week, I will post the tree SSA paper and slides in my home page.
> Specifically I am looking to find a point during compilation where the
> most optimisation has been done PRIOR to target specific processing
> having been started.
>
tree-optimize.c:optimize_function_tree()
> The main gcc branch is no good to me because it only does things on
> a function by function basis. According to the docs, tree-ssa
> processes the whole source _before_ generating rtl etc. (or have I got
> this wrong?)
>
Both mainline and tree-ssa operate in the same way. If you use
-funit-at-a-time, then compilation proceeds in call graph order.
Diego.
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