[LLVMdev] Some questions on SelectionDAG

Andrew Trick atrick at apple.com
Tue Sep 6 11:21:18 PDT 2011


On Sep 2, 2011, at 3:14 AM, Zakk wrote:

> 2. The MVT::glue value is used to ensure two nodes are scheduled together and in order. 
> 
> In the other word, we can’t insert any instruction of them in the scheduling, is it correct?
> 
preRA scheduling should keep them adjacent. But later MachineInstr passes, such as postRA scheduling may shuffle them around.

-Andy
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