[clang] [clang][CodeGen] Use byval for SystemZ indirect arguments (PR #66404)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

There's a special case in the msan handling precisely because byval makes the ABI different.  (If you look at the x86 code, you'll see that the generated code with byval is significantly different.)

I don't think I know enough about dfsan to follow that argument.

https://github.com/llvm/llvm-project/pull/66404