llvm dev - Nov 2009 - [LLVMdev] MachineFrameInfo

Hello,

I found that is possible to introduce some changes in the stack layout;
however, where I can  find more information about how to use it (I am
reading code). For example, how I can align the stack to the maximum size
(what is the max size?), or how I can protect it? Can I set up the
condiction using flags at compiler time or I need to change the code?

-- 
Juan Carlos
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20091126/3ba1c6fa/attachment.html>

Hello,

If I follow your questions correctly, it sounds like you're after  
something like dynamic stack realignment. I would suggest having a  
look at the x86 and ARM backends for examples of how this is  
implemented. Look for the needsStackRealignment() and  
calculateMaxStackAlignment() functions in particular, and where  
they're called from.

Regards,
   Jim


On Nov 26, 2009, at 6:00 AM, Juan Carlos Martinez Santos wrote:
> Hello,
>
> I found that is possible to introduce some changes in the stack  
> layout; however, where I can  find more information about how to use  
> it (I am reading code). For example, how I can align the stack to  
> the maximum size (what is the max size?), or how I can protect it?  
> Can I set up the condiction using flags at compiler time or I need  
> to change the code?
>
> -- 
> Juan Carlos
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev