[all-commits] [llvm/llvm-project] 117e56: [AMDGPU] Reserving VGPR for future SGPR Spill

[Saiyedul Islam via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 117e5609e98b43f925c678b72f816ad3a1c3eee7
      https://github.com/llvm/llvm-project/commit/117e5609e98b43f925c678b72f816ad3a1c3eee7
  Author: Saiyedul Islam <Saiyedul.Islam at amd.com>
  Date:   2020-05-12 (Tue, 12 May 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
    M llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.cpp
    M llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.h
    A llvm/test/CodeGen/AMDGPU/reserve-vgpr-for-sgpr-spill.ll

  Log Message:
  -----------
  [AMDGPU] Reserving VGPR for future SGPR Spill

Summary: One VGPR register is allocated to handle a future spill of SGPR if "--amdgpu-reserve-vgpr-for-sgpr-spill" option is used

Reviewers: arsenm, rampitec, msearles, cdevadas

Reviewed By: arsenm

Subscribers: madhur13490, qcolombet, kerbowa, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, hiraditya, llvm-commits

Tags: #amdgpu, #llvm

Differential Revision: https://reviews.llvm.org/D70379