[LLVMdev] PassManager

[Devang Patel]

Hi All,

I am planning to re-implement PassManager in llvm 2.0. The goal is to  
address

   http://nondot.org/sabre/LLVMNotes/Inliner-PassManager.txt   and
   http://nondot.org/sabre/LLVMNotes/LoopOptimizerNotes.txt

and other crazy ideas Chris has. Current implementation of PassManager  
is very complex. Initially I attempted to update it to  address above  
notes but realized that redoing PassManager in simple way makes more  
sense, and Chris agreed. Instead of replacing current PassManager with  
new PassManager in one big scoop I'm going to follow these steps:

1) Rename existing Managers using _X suffix.
2) Introduce new PassManager skeleton
3) Add functionality in new Pass Manager
4) Start Using new Pass Manager
5) Remove existing Pass Manager
6) Implement LoopPassManager
7) Update existing Loop transformations to conform LoopPassManager

-
Devang