llvm dev - Aug 2018 - [SelectionDAGBuilder] AAInfo and lowering a target memory intrinsic

Hi,

    I noticed while lowering a call of a target memory intrinsic to an
INTRINSIC node, we ignore the AAInfo (metadata).

Please refer to the function SelectionDAGBuilder::visitTargetIntrinsic().
While constructing the DAG Node, the IntrinsicInfo object does not hold any
alias information metadata and so we ignore the information. Is there any
specific reason why we do this ?

 

I have a SelectionDAG in software pipeliner and I am looking to use this
AAInfo to determine loop carried dependences.

Any pointers will be highly appreciated ?

 

--Sumanth

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