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Re: (i386-linux x sh-elf) More weak stack addressing
- To: Clinton Popetz <cpopetz at cygnus dot com>
- Subject: Re: (i386-linux x sh-elf) More weak stack addressing
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Thu, 20 Jul 2000 17:29:36 -0600
- cc: Toshiyasu Morita <tm at netcom dot com>, gcc at gcc dot gnu dot org
- Reply-To: law at cygnus dot com
In message <20000720173747.A12948@cpopetz.com>you write:
> Essentially you want the various optimization passes to operate on EBB
> (extended basic blocks) where possible. This is a worthwhile goal,
> but it will take a lot of work to get there.
Yup. There's a number of optimizers that could benefit from working on
EBBs. Including register allocation.
If someone wants to take a step in that direction, writing code to build
EBBs would be greatly appreciated. Algorithms to compute EBBs from the
existing CFG can be found in Muchnick and probably other books.
Once we can build EBBs, then we can look at improving the optimizers to
use EBBs.
jeff