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

[Alexander via Phabricator via llvm-commits]

alex-t added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp:2243
             UseSGPR ? TmpReg
-                    : RS->scavengeRegister(&AMDGPU::SReg_32_XM0RegClass, MI, 0,
+                    : RS->scavengeRegister(&AMDGPU::SReg_32_XM0RegClass, P, 0,
                                            !UseSGPR);
----------------
If we've failed to scavenge SGPR for SCC save/restore we never get here. But if we've got here we'd either fail to scavenge SGPR for the frame offset computation.


Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D136169