[Mlir-commits] [mlir] [MLIR] Add logging/tracing to DataFlow analysis and RemoveDeadValues (NFC) (PR #144695)

[Oleksandr Alex Zinenko]

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@@ -77,28 +80,46 @@ ChangeResult Liveness::meet(const AbstractSparseLattice &other) {
 LogicalResult
 LivenessAnalysis::visitOperation(Operation *op, ArrayRef<Liveness *> operands,
                                  ArrayRef<const Liveness *> results) {
+  LLVM_DEBUG(llvm::dbgs() << "LNA: Visiting operation: " << *op << "\n");
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ftynse wrote:

It clearly doesn't get the logic :) A contrary suggestion is to print operations without regions. This significantly reduces the amount of debug spew and the operation can still be found. Maybe we should have a global option for that and omit regions in dbgs somehow (but not in outs).

https://github.com/llvm/llvm-project/pull/144695