[PATCH] D68893: AMDGPU: Split flat offsets that don't fit in DAG

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

So assume we have several loads from the same base, a normal case with the huge offset. The ideal selection would reuse an already advanced pointer from the previous load. To achieve that an add shall be done to a step increment of the base pointer, say a 2kb increment, or whatever is supported maximum offset. If that is the case then creation if new sdnode will reuse an old one, already advanced. Otherwise it might be better to split even earlier, in the codegen prepare, or separate gep from constant offset to get that ideal result. I doubt a single operation handling will get a good result for a usual sequence of operations.


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  https://reviews.llvm.org/D68893/new/

https://reviews.llvm.org/D68893