[PATCH] D136169: [AMDGPU] Avoid SCC clobbering before S_CSELECT_B32

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp:2229
+          assert(!(Offset & 0x1) && "Flat scratch offset must be aligned!");
+          BuildMI(*MBB, MI, DL, TII->get(AMDGPU::S_ADDC_U32), TmpSReg)
+              .addReg(FrameReg)
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Needs a comment explaining this trick 


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136169/new/

https://reviews.llvm.org/D136169