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Re: LTO and Code Compaction \ Reverse Inlining \ Procedure Abstraction?
- From: Joern RENNECKE <joern dot rennecke at st dot com>
- To: "Miguel Angel" <miguel55angel at hotmail dot com>
- Cc: gcc mailing list <gcc at gcc dot gnu dot org>
- Date: Sun, 16 Jul 2006 20:18:42 +0100
- Subject: Re: LTO and Code Compaction \ Reverse Inlining \ Procedure Abstraction?
In http://gcc.gnu.org/ml/gcc/2006-07/msg00362.html, you wrote:
Are there any ideas on how and where to add a target and language
independent code compaction pass into gcc?
I think first you should be more specific about what you are trying to do.
DO you only want to match essentially identical functions? I suppose that
shouldn't be that hard to do, you can compare the gimple trees after / instead of
inlining, while keeping a translation table for variable names.
But would that be worth while? Have you studied any code base to determin how
much of a code size saving you could expect?