[LLVMdev] CFG modifcations and code gen

Chris Lattner clattner at apple.com
Tue Oct 14 09:50:18 PDT 2008

On Oct 14, 2008, at 9:16 AM, Villmow, Micah wrote:

> But, the branch folding pass, or whatever passes are supposed to  
> reorder the blocks based on the CFG, are not doing so in this case.  
> Otherwise there is no way that blocks 2 and 4 should be printing out  
> before blocks 3 & 5. Renumber blocks just seems to reorder the  
> values based on their pre-set block number, but when the CFG is  
> modified these number should modified also to follow the new  
> ordering, which is not occurring.

Did you implement TargetInstrInfo::AnalyzeBranch for your target?   
Check out the large comment above it in TargetInstrInfo.h

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