[COFF, ARM64] Make sure to forward arguments from vararg to musttail vararg
Summary:
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.
Reviewers: ssijaric, eli.friedman, TomTan, mgrang, mstorsjo, rnk, compnerd, efriedma
Reviewed By: efriedma
Subscribers: efriedma, kristof.beyls, chrib, javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D53843
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@345641 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed