[all-commits] [llvm/llvm-project] 91464c: [AMDGPU] Save WWM registers in functions

[Sebastian Neubauer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 91464c30bfcf731ccb7f9d6ef6d26e8c1657a6e6
      https://github.com/llvm/llvm-project/commit/91464c30bfcf731ccb7f9d6ef6d26e8c1657a6e6
  Author: Sebastian Neubauer <sebastian.neubauer at amd.com>
  Date:   2021-04-23 (Fri, 23 Apr 2021)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
    M llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
    M llvm/lib/Target/AMDGPU/SIPreAllocateWWMRegs.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    A llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll

  Log Message:
  -----------
  [AMDGPU] Save WWM registers in functions

The values of registers in inactive lanes needs to be saved during
function calls.

Save all registers used for whole wave mode, similar to how it is done
for VGPRs that are used for SGPR spilling.

Differential Revision: https://reviews.llvm.org/D99429