[Mlir-commits] [mlir] [MLIR][RemoveDeadValues] Fix affine.for induction variable incorrectly removed (PR #172612)

[Francisco Geiman Thiesen]

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@@ -327,6 +328,32 @@ RunLivenessAnalysis::RunLivenessAnalysis(Operation *op) {
   solver.load<LivenessAnalysis>(symbolTable);
   LDBG() << "Initializing and running solver";
   (void)solver.initializeAndRun(op);
+
+  // Mark block arguments of RegionBranchOpInterface ops that are NOT successor
+  // inputs as live. These include induction variables (IVs) like those in
+  // affine.for or scf.for. The fix in visitBranchOperand() only handles this
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FranciscoThiesen wrote:

I think it's worth removing the #161117 code here. Let me do this as part of this PR. @joker-eph or @linuxlonelyeagle if you'd prefer me to remove the redundant code in a follow-up PR, let me know,

https://github.com/llvm/llvm-project/pull/172612