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2018 Aug 08
2
Passing arguments to var args function
Hey,
I am working on a new back-end,
in my back end, I require to pass every argument through a register when
calling a function, unless the argument is part of the ellipsis (...) and
then pass it through the stack, I've tried creating a CCCustom function to
analyze the operands when a function has var args, however, the information
whether the out val is fixed or not is not passed into the
2018 Aug 08
2
Passing arguments to var args function
...t 13:28, Liad Mordekoviz via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > Did anyone else come by such requirement? is there any other way anyone
> could recommend handling such requirement?
>
> Apple's calling convention on iOS does this. We have two separate
> CC_Whatever definitions and then AArch64ISelLowering.cpp chooses which
> one to use based on whether the argument is fixed or not (see line
> 3446 onwards).
>
> Cheers.
>
> Tim.
>
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