[LLVMdev] [llvmdev] Whole function SelectionDAG

Dan Gohman gohman at apple.com
Tue Jun 8 10:39:07 PDT 2010

The first question is code placement.  How is the compiler going to  
decide which block (or blocks) to emit an instruction in?  The answer  
to that will help determine how control relationships should be  


On Jun 7, 2010, at 11:56 PM, Zhongxing Xu <xuzhongxing at gmail.com> wrote:

> I am trying to build a DAG for a whole function. The first problem I  
> met is to assign a user for the last instruction of each basic  
> block, be it BRCOND or other node. There is no natural user for such  
> nodes. Without user, it will be removed in later phases. My idea is  
> to use it as chain for nodes in the next basic block. Is this  
> reasonable?
> -Zhongxing Xu
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