[all-commits] [llvm/llvm-project] af8e38: [RISCV][GlobalISel] Add lowerFormalArguments for c...

[Nitin John Raj via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: af8e3861025f3c931cc67ced86d6bd8c939e6fc0
      https://github.com/llvm/llvm-project/commit/af8e3861025f3c931cc67ced86d6bd8c939e6fc0
  Author: Nitin John Raj <nitin.raj at sifive.com>
  Date:   2023-05-30 (Tue, 30 May 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
    A llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/args.ll

  Log Message:
  -----------
  [RISCV][GlobalISel] Add lowerFormalArguments for calling convention

This patch adds an IncomingValueHandler and IncomingValueAssigner, and implements minimal support for lowering formal arguments according to the RISC-V calling convention. Simple non-aggregate integer and pointer types are supported.

In the future, we must correctly handle byval and sret pointer arguments, and instances where the number of arguments exceeds the number of registers.

Coauthored By: lewis-revill

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D74977