[LLVMdev] getnode(BB) = 0; block already in dominator tree

[Philip Reames]

Er, LICM currently does not modify the CFG at all.  Are you proposing to 
change that?  And if so, why?  What's the motivating case?

Philip

On 05/14/2015 11:55 AM, Shreyas Krishnan wrote:
> Hi
>    I run into an issue as part of splitting a critical edge during 
> LICM.  When a new basic block is created and needs to be added into 
> the dominator tree, the block is already in the dominator tree. I 
> print the dominator tree and I see it is added into the tree as child 
> of node it is supposed to dominate.
>
> How do I debug to find out why/when its getting added into the tree. ? 
> Tips/suggestions on how to debug to find out how the densemap involved 
> is getting updated will be great.
>
> thanks
> Shrey
>
>
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