[PATCH] D30119: MachineRegionInfo: fix pass initialization

[Francis Visoiu Mistrih via Phabricator via llvm-commits]

thegameg created this revision.
Herald added a subscriber: wdng.

- Add it to lib/CodeGen/CodeGen.cpp::initializeCodeGen so that it is linked in the CodeGen library.
- MachineRegionInfoPass's name conflicts with RegionInfoPass's name ("region").
- MachineRegionInfo should depend on MachineDominatorTree, MachinePostDominatorTree and MachineDominanceFrontier instead of their respective IR versions.
- Since there were no tests for this, add a generic MIR test.


https://reviews.llvm.org/D30119

Files:
  lib/CodeGen/CodeGen.cpp
  lib/CodeGen/MachineRegionInfo.cpp
  test/CodeGen/MIR/Generic/machine-region-info.ll

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