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Hi,<br><br>I would like to transform a LLVM function containing a load and an add of the base address inside a loop to a post-incremented load. In DAGCombiner.cpp::CombineToPostIndexedLoadStore(), it says it cannot fold the add for instance if it is a predecessor/successor of the load. I find this odd, as this<br>is exactly what I would like to handle: a simple loop with an address that is inremented in each iteration.<br><br>I am considering using a target intrinsic for this purpose, as the SCEV interface is available on the LLVM I/R. In this way, I could get a DAG with a post-inc-load node instead of the load and add nodes.<br><br>Is this a work in progress? Please explain why these constraints are put in the above mentioned method as they do not seem to facilitate post-inc instruction combining.<br><br>Best regards,<br><br>Jonas Paulsson<br><br> </body>
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