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subregs
2009 Feb 11
1
[LLVMdev] Prevent node from being combined
How can I prevent some nodes from being combined in DAGCombine.cpp?
Maybe what I want to do below doesn't follow the philosophy of LLVM, but I'd
like to know if there is any way to avoid node from being combined.
TargetLowering::PerformDAGCombine() is only called if DAGCombiner cannot
combine a specific node. It seems that there is no chance to stop it from
combining a node.
I need the