[llvm] [GISel][RISCV]Implement indirect parameter passing for large scalars (PR #95429)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

Why don't just do the lowering in the frontend? I.e. return getNaturalAlignIndirect(...) if argument's size exceeds 2xXLEN

https://github.com/llvm/llvm-project/pull/95429