[PATCH] D152098: [MC] Add MCRegisterInfo::regunits for iteration over register units

[Jay Foad via Phabricator via llvm-commits]

foad added inline comments.


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Comment at: llvm/include/llvm/MC/MCRegister.h:23-29
+/// Register units are used to model interference and register pressure.
+/// Every register is assigned one or more register units such that two
+/// registers overlap if and only if they have a register unit in common.
+///
+/// Normally, one register unit is created per leaf register. Non-leaf
+/// registers inherit the units of their sub-registers.
+using MCRegUnit = unsigned;
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Do you need to touch `MCRegister.h`? There is already an introductory comment like this near the definition of `MCRegUnitIterator` in `MCRegisterInfo.h`.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152098/new/

https://reviews.llvm.org/D152098