[PATCH] D41029: [JumpTables][PowerPC] Let targets decide which switch instructions are suitable for jump tables

[Nemanja Ivanovic via Phabricator via llvm-commits]

nemanjai updated this revision to Diff 126271.
nemanjai added a comment.

Address comments from Eli. Thanks Eli!

- Make caching of `SwitchInst`s already known not to be suitable for jump tables thread-safe
- Add similar caching mechanism for results of `mightUseCTR()`
- Fix a test case I initially forgot to fix


Repository:
  rL LLVM

https://reviews.llvm.org/D41029

Files:
  include/llvm/CodeGen/TargetLowering.h
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCISelLowering.h
  test/CodeGen/PowerPC/NoJTsDueToCTRUse.ll
  test/CodeGen/PowerPC/mcm-5.ll

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