[PATCH] D41774: [GlobalISel] Refactory CallLowering handleAssignments for custom <Target>CCState

[Leslie Zhai via Phabricator via llvm-commits]

xiangzhai created this revision.
xiangzhai added reviewers: t.p.northover, asb, dsanders.
Herald added subscribers: kristof.beyls, rovka.

Hi LLVM developers,

Motivation:

As Alex suggested <http://lists.llvm.org/pipermail/llvm-dev/2018-January/120098.html> ,  I refactory `handleAssignments` in the `CallLowering`,  so it is able to override `handleAssignments` in your <Target>CallLowering to initial your <Target>CCState, for example:

  RISCVCCState CCInfo(F.getCallingConv(), F.isVarArg(), MF, ArgLocs,                  
              F.getContext() ...); // Add more custom variables to meet your Target's requirement

And it also need to override `assignArg` in your <Target>CallLowering, cast from CCState to custom <Target>CCState, then do some target-specific treatment.

Please review my patch, and give me some suggestion, thanks for your teaching!

Regards,
Leslie Zhai


Repository:
  rL LLVM

https://reviews.llvm.org/D41774

Files:
  include/llvm/CodeGen/GlobalISel/CallLowering.h
  lib/CodeGen/GlobalISel/CallLowering.cpp

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