[all-commits] [llvm/llvm-project] 39830f: [AMDGPU][PEI] Set up SP for chain functions

[Diana via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 39830fea284f5789af39e9a413c071eb9af112c8
      https://github.com/llvm/llvm-project/commit/39830fea284f5789af39e9a413c071eb9af112c8
  Author: Diana Picus <Diana-Magda.Picus at amd.com>
  Date:   2023-11-08 (Wed, 08 Nov 2023)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/test/CodeGen/AMDGPU/amdgpu-cs-chain-cc.ll
    M llvm/test/CodeGen/AMDGPU/amdgpu-cs-chain-preserve-cc.ll
    M llvm/test/CodeGen/AMDGPU/pei-amdgpu-cs-chain-preserve.mir
    M llvm/test/CodeGen/AMDGPU/pei-amdgpu-cs-chain.mir

  Log Message:
  -----------
  [AMDGPU][PEI] Set up SP for chain functions

Initialize the SP to 0 in the prologue of functions with the
`amdgpu_cs_chain` or `amdgpu_cs_chain_preserve` calling conventions, but
only if they need one (i.e. if they contain calls to `amdgpu_gfx`
functions or if they have stack objects).

Also make sure we don't try to realign the stack (since 0 is aligned
enough).

Differential Revision: https://reviews.llvm.org/D156413