[LLVMdev] Re: Newbie questions

[Vikram Adve]

On Apr 26, 2006, at 11:02 PM, Chris Lattner wrote:
>> By reordering two instructions that could throw exceptions.
>
> One of us is confused.  The approach above never has instructions  
> that throw exceptions.

I think we're talking about different cases.  What you say is true  
about Tom's first approach (explicit comparisons  before each  
potentially trapping instruction).  I was talking about the second  
approach (taking a signal and converting that to an exception).  That  
could be broken by reordering two such instructions.

--Vikram
http://www.cs.uiuc.edu/~vadve
http://llvm.cs.uiuc.edu/