[PATCH] D74506: [SystemZ] Support the kernel backchain

[Jonas Paulsson via Phabricator via llvm-commits]

jonpa updated this revision to Diff 244451.
jonpa added a comment.

Allow packed-stack with varargs, placing the vararg arguments on the default slots in the reg save area.

Maybe move the checks in usePackedStack() to SystemZDAGToDAGISel::runOnMachineFunction()?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D74506/new/

https://reviews.llvm.org/D74506

Files:
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/test/Driver/mbackchain.c
  llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp
  llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
  llvm/test/CodeGen/SystemZ/frame-23.ll
  llvm/test/CodeGen/SystemZ/frame-24.ll
  llvm/test/CodeGen/SystemZ/frameaddr-02.ll

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