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Florian Hahn 5e5e86f97a [CostModel] Add basic implementation of getGatherScatterOpCost. 
Add a basic implementation of getGatherScatterOpCost to BasicTTIImpl.

The implementation estimates the cost of scalarizing the loads/stores,
the cost of packing/extracting the individual lanes and the cost of
only selecting enabled lanes.

This more accurately reflects the current cost on targets like AArch64.

Reviewed By: dmgreen

Differential Revision: https://reviews.llvm.org/D91984
2020-11-26 12:02:25 +00:00
..
llvm
[CostModel] Add basic implementation of getGatherScatterOpCost.
2020-11-26 12:02:25 +00:00
llvm-c
Adding PoisonValue for representing poison value explicitly in IR
2020-11-25 17:33:51 -07:00