[LLVMdev] Register Liveness

[Evan Cheng]

There has been talk about lazily computing liveness. Please search the  
llvmdev archive.

Evan

On Mar 19, 2009, at 9:28 AM, George Patsilaras wrote:

> I was wonderring if there is any quick way to check how many virtual  
> registers are live-in at any give instruction of a function?
>
> Right now my understanding is that I would have to calculate the  
> gen, kill, in and out sets and iterate over the entire functions CFG  
> until the sets stop changing.
>
> Thanks
>
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