[PATCH] D40333: Separate LoopTraversal and BreakFalseDeps out of ExecutionDomainFix into their own files

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added inline comments.


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Comment at: include/llvm/CodeGen/LoopTraversal.h:66
+  };
+  using MBBInfoMap = DenseMap<MachineBasicBlock *, MBBInfo>;
+  MBBInfoMap MBBInfos;
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You can use a less expensive `SmallVector<>` or `IndexedMap<>` instead of a DenseMap by using the fact that machine basic blocks have a dense numbering. See for example `MachineTraceMetrics::BlockInfo` or `LiveRangeCalc::Map` for examples on how this is can be done.


Repository:
  rL LLVM

https://reviews.llvm.org/D40333