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

[Matthias Springer]

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@@ -237,6 +238,12 @@ RunLivenessAnalysis::RunLivenessAnalysis(Operation *op) {
         for (auto blockArg : llvm::enumerate(block.getArguments())) {
           if (getLiveness(blockArg.value()))
             continue;
+          // Skip block args of ops with regions that are not
+          // RegionBranchOpInterface or FunctionOpInterface
+          // (e.g. gpu.launch) - solver doesn't analyze their regions
+          if (!isa<RegionBranchOpInterface>(op) &&
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matthias-springer wrote:

That being said, it's possible that there's a bug here. But it doesn't show in the attached test case.


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