Revert "Revert "[AMDGPU] Update LiveVariables in SILowerControlFlow""

Accidental error. This reverts commit 2e823da.
llvm · May 3, 2023 · ecf014e · ecf014e
1 parent f4f6eed
commit ecf014e
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp b/llvm/lib/Target/AMDGPU/SILowerControlFlow.cpp
@@ -427,6 +427,8 @@ void SILowerControlFlow::emitLoop(MachineInstr &MI) {
       BuildMI(MBB, &MI, DL, TII->get(Andn2TermOpc), Exec)
           .addReg(Exec)
           .add(MI.getOperand(0));
+  if (LV)
+    LV->replaceKillInstruction(MI.getOperand(0).getReg(), MI, *AndN2);
 
   auto BranchPt = skipToUncondBrOrEnd(MBB, MI.getIterator());
   MachineInstr *Branch =