[all-commits] [llvm/llvm-project] 3c8e05: [AMDGPU] Fix mfma scheduling crash

[Stanislav Mekhanoshin via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3c8e055187d8adf1834cdc735d82df5529fbbd86
      https://github.com/llvm/llvm-project/commit/3c8e055187d8adf1834cdc735d82df5529fbbd86
  Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin at amd.com>
  Date:   2019-10-24 (Thu, 24 Oct 2019)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
    M llvm/test/CodeGen/AMDGPU/mfma-loop.ll

  Log Message:
  -----------
  [AMDGPU] Fix mfma scheduling crash

An SUnit can be neither intruction not SDNode. It is all
null if represents a nop. Fixed a crash on using SU->getInstr().

Differential Revision: https://reviews.llvm.org/D69395