[Mlir-commits] [mlir] [mlir][gpu] Fix crash in RemoveDeadValues pass with gpu.launch ops (PR #182711)

[Fedor Nikolaev]

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@@ -511,8 +511,10 @@ static void processBranchOp(BranchOpInterface branchOp, RunLivenessAnalysis &la,
     // Do (2)
     BitVector successorNonLive =
         markLives(operandValues, nonLiveSet, la).flip();
-    collectNonLiveValues(nonLiveSet, successorBlock->getArguments(),
-                         successorNonLive);
+    if (std::distance(successorBlock->pred_begin(),
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felichita wrote:

Block args with multiple predecessors act as phi nodes - removing them requires updating all predecessor terminators simultaneously

https://github.com/llvm/llvm-project/pull/182711