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Ta-Wei Tu 98a428c11e [LoopNest] Extend LPMUpdater and adaptor to handle loop-nest passes
This is a follow-up patch of D87045.

The patch implements "loop-nest mode" for `LPMUpdater` and `FunctionToLoopPassAdaptor` in which only top-level loops are operated.

`createFunctionToLoopPassAdaptor` decides whether the returned adaptor is in loop-nest mode or not based on the given pass. If the pass is a loop-nest pass or the pass is a `LoopPassManager` which contains only loop-nest passes, the loop-nest version of adaptor is returned; otherwise, the normal (loop) version of adaptor is returned.

Reviewed By: Whitney

Differential Revision: https://reviews.llvm.org/D87531
2020-12-22 08:47:38 +08:00
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