[all-commits] [llvm/llvm-project] 9c5aed: [RISCV] Fixing stack offset for RVV object with va...

[Kito Cheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9c5aedfbf53ee8ce75723dec88359403e813499f
      https://github.com/llvm/llvm-project/commit/9c5aedfbf53ee8ce75723dec88359403e813499f
  Author: Kito Cheng <kito.cheng at sifive.com>
  Date:   2022-04-08 (Fri, 08 Apr 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/wrong-stack-offset-for-rvv-object.mir

  Log Message:
  -----------
  [RISCV] Fixing stack offset for RVV object with vararg in stack.

We found LLVM generate wrong stack offset for RVV object when stack
having variable argument, that cause by we didn't count vaarg part during
calculate RVV stack objects.

Also update the stack layout diagram for including vaarg in the diagram.

Stack layout ref:
https://github.com/gcc-mirror/gcc/blob/master/gcc/config/riscv/riscv.cc#L3941

Reviewed By: rogfer01

Differential Revision: https://reviews.llvm.org/D123180