[PATCH] D15340: Separate CSRs into a subset handled via explicit copies and a subset handled by prologue/epilogue

[Manman Ren via llvm-commits]

manmanren updated this revision to Diff 42337.
manmanren added a comment.

Add comments for functions added to TargetLowering: supportSplitCSR, initializeSplitCSR and insertCopiesSplitCSR.


http://reviews.llvm.org/D15340

Files:
  include/llvm/CodeGen/FunctionLoweringInfo.h
  include/llvm/Target/TargetLowering.h
  include/llvm/Target/TargetRegisterInfo.h
  lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

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