[llvm-dev] RFC: Dynamically Allocated "Callee Saved Registers" Lists

[Joerg Sonnenberger via llvm-dev]

On Mon, Jan 09, 2017 at 12:47:07PM +0300, Bruce Hoult via llvm-dev wrote:
> Is there any calling convention, on any supported platform, that requires
> the callee to preserve a register that was used to pass an argument?

The "this" parameter for constructors and possible other things is
handled like that on some platforms. ARM EABI I think?

Joerg