[PATCH] D38710: AMDGPU: Fix failure to select branch with optnone

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added inline comments.


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Comment at: lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp:1647
 
-  SDValue VCC = CurDAG->getCopyToReg(N->getOperand(0), SL, AMDGPU::VCC, Cond);
-  CurDAG->SelectNodeTo(N, AMDGPU::S_CBRANCH_VCCNZ, MVT::Other,
+  SDValue VCC = CurDAG->getCopyToReg(N->getOperand(0), SL, CondReg, Cond);
+  CurDAG->SelectNodeTo(N, BrOp, MVT::Other,
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Why cannot we use condition register w/o a copy?


https://reviews.llvm.org/D38710