[PATCH] D53843: Make sure to forward arguments from vararg to musttail vararg

[Yin Ma via Phabricator via llvm-commits]

yinma created this revision.
Herald added subscribers: llvm-commits, javed.absar.

  Thunk functions in Windows are varag functions that call a musttail function
  to pass the arguments after the fixup is done.  We need to make sure that we
  forward the arguments from the caller vararg to the callee vararg function.
  This is the same mechanism that is used for Windows on X86.


Repository:
  rL LLVM

https://reviews.llvm.org/D53843

Files:
  lib/Target/AArch64/AArch64ISelLowering.cpp
  lib/Target/AArch64/AArch64MachineFunctionInfo.h
  test/CodeGen/AArch64/vararg-tallcall.ll

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