[PATCH] D155711: [SimplifyCFG] Hoist common instructions on Switch.

[DianQK via Phabricator via llvm-commits]

DianQK updated this revision to Diff 544763.
DianQK added a comment.

Add the `hoistCommonCodeFromSuccessors` method as a generic hoist common code implementation.
The existing test cases look like they all pass. More test cases for the switch statement may need to be added.
There may be some duplicate calculations that can be eliminated, such as `shouldHoistCommonInstructions`. But I think most of the code is done.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155711/new/

https://reviews.llvm.org/D155711

Files:
  llvm/lib/Transforms/Utils/SimplifyCFG.cpp
  llvm/test/CodeGen/AArch64/patchable-function-entry-bti.ll
  llvm/test/Transforms/SimplifyCFG/hoist-common-code-with-unreachable.ll
  llvm/test/Transforms/SimplifyCFG/hoist-common-code.ll

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