[llvm-branch-commits] [llvm] GlobalISel: Fix combine duplicating atomic loads (PR #111730)

[Thorsten Schütt via llvm-branch-commits]

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@@ -1110,6 +1110,7 @@ void CombinerHelper::applySextInRegOfLoad(
   Builder.buildLoadInstr(TargetOpcode::G_SEXTLOAD, MI.getOperand(0).getReg(),
                          LoadDef->getPointerReg(), *NewMMO);
   MI.eraseFromParent();
+  LoadDef->eraseFromParent();
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tschuett wrote:

Please add a comment why the second `eraseFromParent` is needed.

https://github.com/llvm/llvm-project/pull/111730