[PATCH] D59222: MIR: Stop reinitializing target information for every use

[Matt Arsenault via Phabricator via llvm-commits]

arsenm marked an inline comment as done.
arsenm added inline comments.


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Comment at: lib/CodeGen/MIRParser/MIRParser.cpp:56
   SlotMapping IRSlots;
-  /// Maps from register class names to register classes.
-  Name2RegClassMap Names2RegClasses;
-  /// Maps from register bank names to register banks.
-  Name2RegBankMap Names2RegBanks;
+  std::unique_ptr<PerTargetMIParsingState> Target;
+
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thegameg wrote:
> nit: `Optional<PerTargetMIParsingState>`?
I don't think Optional really applies here. It's not really optional, so much as the construction needs to be delayed until a Subtarget is eventually available.


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  https://reviews.llvm.org/D59222/new/

https://reviews.llvm.org/D59222