[all-commits] [llvm/llvm-project] 71eb8c: [AMDGPU] Update amdgpu_cs_chain_preserve docs. NFC

[Diana via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 71eb8c07dd9b57c5c4cc6981fae9323fadb7003d
      https://github.com/llvm/llvm-project/commit/71eb8c07dd9b57c5c4cc6981fae9323fadb7003d
  Author: Diana Picus <Diana-Magda.Picus at amd.com>
  Date:   2023-08-24 (Thu, 24 Aug 2023)

  Changed paths:
    M llvm/docs/AMDGPUUsage.rst

  Log Message:
  -----------
  [AMDGPU] Update amdgpu_cs_chain_preserve docs. NFC

We no longer allow calls to functions with the `amdgpu_gfx` calling
convention from functions with the `amdgpu_cs_chain_preserve` calling
convention. See D153517.

Also mention that we can't have a chain call from
amdgpu_cs_chain_preserve using more VGPRs than it has received.

Differential Revision: https://reviews.llvm.org/D156408