[PATCH] D147532: [MachineLateInstrsCleanup] Improve compile time for huge functions.

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/lib/CodeGen/MachineLateInstrsCleanup.cpp:46
+  // Data structures to map regs to their definitions and kills per MBB.
+  struct Reg2MIMap : public std::map<Register, MachineInstr *> {
+    MachineInstr *get(Register Reg) {
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I thought subclassing STL types was discouraged. I'd also default to using the LLVM map types if there's no observable difference anyway


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D147532/new/

https://reviews.llvm.org/D147532