[LLVMdev] Dependence Analysis [was: Flow-Sensitive AA]

[Vikram S. Adve]

On Aug 22, 2008, at 4:27 PM, David Greene wrote:

> Exactly right.  One of my first jobs here was to fix a bunch of  
> overflow
> problems exposed by optimization.  It's now become a tradition to
> give this task to any new optimizer employee.  :)


But that sounds like Cray is being fairly conservative in treating  
overflow problems as errors during optimization.  Is that correct?   
That's more or less the opposite of what Dan Berlin was suggesting.

This is not just idle curiosity -- I'm trying to get an understanding  
of what real-world compilers are actually doing on this issue.

--Vikram