[LLVMdev] LoopPass Question

[Devang Patel]

On Aug 19, 2008, at 12:32 PM, David Greene wrote:

> Are LoopPasses allowed to maintain state between runOnLoop  
> invocations?

What kind of information are you looking to maintain between runOnLoop  
invocations ?

>
> The documentation is not clear on this point.

doInitialization() and doFinalization() will be run for each pass  
before and after runOnLoop().

For each pass
   doInitialization()
For each pass
   runOnLoop()
For each pass
   doFinalization()

So each pass can collect information during initialization pass to use  
during runOnLoop().

-
Devang