[PATCH] D146791: Guard against dereferencing a nullptr

[Akshay Khadse via Phabricator via llvm-commits]

akshaykhadse created this revision.
Herald added subscribers: kosarev, foad, kerbowa, hiraditya, jvesely, arsenm.
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akshaykhadse requested review of this revision.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146791

Files:
  llvm/lib/Target/AMDGPU/SIFrameLowering.cpp


Index: llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
===================================================================
--- llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
+++ llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
@@ -1350,6 +1350,7 @@
             TII->getNamedOperand(MI, AMDGPU::OpName::vdata)->getReg();
           if (FuncInfo->allocateVGPRSpillToAGPR(MF, FI,
                                                 TRI->isAGPR(MRI, VReg))) {
+            assert(RS != nullptr);
             // FIXME: change to enterBasicBlockEnd()
             RS->enterBasicBlock(MBB);
             TRI->eliminateFrameIndex(MI, 0, FIOp, RS);


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