[PATCH] D147331: [ARM] Increase the Scalarized cost of masked gather/scatter operations
Dave Green via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Mar 31 07:51:40 PDT 2023
dmgreen created this revision.
dmgreen added reviewers: samtebbs, NickGuy.
Herald added subscribers: hiraditya, kristof.beyls.
Herald added a project: All.
dmgreen requested review of this revision.
Herald added a project: LLVM.
If a gather/scatter is masked and will need to be scalarized then the cost should be higher than we currently produce. An additional cost for scalarizing the mask, extracting i1s and branching on the result needs to be added, which I gave a cost of 5 in this patch.
https://reviews.llvm.org/D147331
Files:
llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
llvm/test/Analysis/CostModel/ARM/mve-gather-scatter-cost.ll
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