[PATCH] D85366: [RISCV] Disparage CSR instructions

[Alex Bradbury via Phabricator via llvm-commits]

asb added a comment.

The description of `isNotDuplicable` in MachineInstr.h is:

  /// Return true if this instruction cannot be safely duplicated.
  /// For example, if the instruction has a unique labels attached
  /// to it, duplicating it would cause multiple definition errors.
  bool isNotDuplicable(QueryType Type = AnyInBundle) const {
    return hasProperty(MCID::NotDuplicable, Type);
  }

I don't think this obviously applies to CSRs, and the property doesn't seem to be applied to instructions that modify control registers for other in-tree targets.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D85366/new/

https://reviews.llvm.org/D85366