[LLVMdev] How to allocate redundant stack slot?

[Jim Grosbach]

Hi Ray,

PEI does something kinda like this for emergency spill slots, which are used by the register scavenger. You may find looking through how that works useful as a rough guide to what’s involved.

-Jim

> On Nov 6, 2014, at 12:55 PM, Alex S <alexmountain13 at gmail.com> wrote:
> 
> Hi Philip,
> 
> I am sorry. It has nothing to do with GC. All I need is some stack slots that can
> checkpoint some register values to there. However, I am not sure how to do that
> correctly. Tim's idea inspire me a lot. I just wonder whether there is any way to
> make it easier.
> Thanks.
> 
> Ray
> 
> On Thu, Nov 6, 2014 at 1:57 PM, Philip Reames <listmail at philipreames.com <mailto:listmail at philipreames.com>> wrote:
> You're use of the term "checkpointing" caught my eye.  Are you trying to do something GC related?
> 
> Philip
> 
> 
> On 11/05/2014 06:57 PM, Alex S wrote:
>> Hi all,
>> 
>> Sorry to bother those not interested. I am a newbie to LLVM.
>> I have a problem on allocating additional stack slot for checkpointing.
>> However, I have no idea on how to allocate redundant stack slot in llvm.
>> 
>> Any suggestions?
>> 
>> Thanks,
>> Ray
>> 
>> 
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