[Mlir-commits] [mlir] Migrate more of DataFlow framework to LDBG (NFC) (PR #150752)

[Mehdi Amini]

https://github.com/joker-eph created https://github.com/llvm/llvm-project/pull/150752

None

>From 8abe0b3dbbd7f497f1eb879662490abb25224eec Mon Sep 17 00:00:00 2001
From: Mehdi Amini <joker.eph at gmail.com>
Date: Sat, 26 Jul 2025 03:06:24 -0700
Subject: [PATCH] Migrate more of DataFlow framework to LDBG (NFC)

---
 .../DataFlow/ConstantPropagationAnalysis.cpp  |  8 ++++----
 .../Analysis/DataFlow/LivenessAnalysis.cpp    |  2 +-
 mlir/lib/Analysis/DataFlowFramework.cpp       | 20 +++++++++----------
 3 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/mlir/lib/Analysis/DataFlow/ConstantPropagationAnalysis.cpp b/mlir/lib/Analysis/DataFlow/ConstantPropagationAnalysis.cpp
index 51fa7739e1938..fb5649e670656 100644
--- a/mlir/lib/Analysis/DataFlow/ConstantPropagationAnalysis.cpp
+++ b/mlir/lib/Analysis/DataFlow/ConstantPropagationAnalysis.cpp
@@ -16,6 +16,7 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Debug.h"
+#include "llvm/Support/DebugLog.h"
 #include <cassert>
 
 #define DEBUG_TYPE "constant-propagation"
@@ -46,7 +47,7 @@ void ConstantValue::print(raw_ostream &os) const {
 LogicalResult SparseConstantPropagation::visitOperation(
     Operation *op, ArrayRef<const Lattice<ConstantValue> *> operands,
     ArrayRef<Lattice<ConstantValue> *> results) {
-  LLVM_DEBUG(llvm::dbgs() << "SCP: Visiting operation: " << *op << "\n");
+  LDBG() << "SCP: Visiting operation: " << *op;
 
   // Don't try to simulate the results of a region operation as we can't
   // guarantee that folding will be out-of-place. We don't allow in-place
@@ -98,12 +99,11 @@ LogicalResult SparseConstantPropagation::visitOperation(
     // Merge in the result of the fold, either a constant or a value.
     OpFoldResult foldResult = std::get<1>(it);
     if (Attribute attr = llvm::dyn_cast_if_present<Attribute>(foldResult)) {
-      LLVM_DEBUG(llvm::dbgs() << "Folded to constant: " << attr << "\n");
+      LDBG() << "Folded to constant: " << attr;
       propagateIfChanged(lattice,
                          lattice->join(ConstantValue(attr, op->getDialect())));
     } else {
-      LLVM_DEBUG(llvm::dbgs()
-                 << "Folded to value: " << cast<Value>(foldResult) << "\n");
+      LDBG() << "Folded to value: " << cast<Value>(foldResult);
       AbstractSparseForwardDataFlowAnalysis::join(
           lattice, *getLatticeElement(cast<Value>(foldResult)));
     }
diff --git a/mlir/lib/Analysis/DataFlow/LivenessAnalysis.cpp b/mlir/lib/Analysis/DataFlow/LivenessAnalysis.cpp
index 197f97f76fa00..509f5202be08d 100644
--- a/mlir/lib/Analysis/DataFlow/LivenessAnalysis.cpp
+++ b/mlir/lib/Analysis/DataFlow/LivenessAnalysis.cpp
@@ -294,7 +294,7 @@ RunLivenessAnalysis::RunLivenessAnalysis(Operation *op) {
   solver.load<LivenessAnalysis>(symbolTable);
   LDBG() << "Initializing and running solver";
   (void)solver.initializeAndRun(op);
-  LDBG() << "Dumping liveness state for op";
+  LDBG() << "RunLivenessAnalysis initialized for op: " << op->getName();
 }
 
 const Liveness *RunLivenessAnalysis::getLiveness(Value val) {
diff --git a/mlir/lib/Analysis/DataFlowFramework.cpp b/mlir/lib/Analysis/DataFlowFramework.cpp
index 176d53e017c9f..3fc020b70ccce 100644
--- a/mlir/lib/Analysis/DataFlowFramework.cpp
+++ b/mlir/lib/Analysis/DataFlowFramework.cpp
@@ -14,7 +14,7 @@
 #include "llvm/ADT/iterator.h"
 #include "llvm/Config/abi-breaking.h"
 #include "llvm/Support/Casting.h"
-#include "llvm/Support/Debug.h"
+#include "llvm/Support/DebugLog.h"
 #include "llvm/Support/raw_ostream.h"
 
 #define DEBUG_TYPE "dataflow"
@@ -44,9 +44,8 @@ void AnalysisState::addDependency(ProgramPoint *dependent,
   (void)inserted;
   DATAFLOW_DEBUG({
     if (inserted) {
-      llvm::dbgs() << "Creating dependency between " << debugName << " of "
-                   << anchor << "\nand " << debugName << " on " << dependent
-                   << "\n";
+      LDBG() << "Creating dependency between " << debugName << " of " << anchor;
+      LDBG() << "and " << debugName << " on " << dependent;
     }
   });
 }
@@ -116,8 +115,7 @@ LogicalResult DataFlowSolver::initializeAndRun(Operation *top) {
 
   // Initialize the analyses.
   for (DataFlowAnalysis &analysis : llvm::make_pointee_range(childAnalyses)) {
-    DATAFLOW_DEBUG(llvm::dbgs()
-                   << "Priming analysis: " << analysis.debugName << "\n");
+    DATAFLOW_DEBUG(LDBG() << "Priming analysis: " << analysis.debugName);
     if (failed(analysis.initialize(top)))
       return failure();
   }
@@ -129,8 +127,8 @@ LogicalResult DataFlowSolver::initializeAndRun(Operation *top) {
     auto [point, analysis] = worklist.front();
     worklist.pop();
 
-    DATAFLOW_DEBUG(llvm::dbgs() << "Invoking '" << analysis->debugName
-                                << "' on: " << point << "\n");
+    DATAFLOW_DEBUG(LDBG() << "Invoking '" << analysis->debugName
+                          << "' on: " << point);
     if (failed(analysis->visit(point)))
       return failure();
   }
@@ -143,9 +141,9 @@ void DataFlowSolver::propagateIfChanged(AnalysisState *state,
   assert(isRunning &&
          "DataFlowSolver is not running, should not use propagateIfChanged");
   if (changed == ChangeResult::Change) {
-    DATAFLOW_DEBUG(llvm::dbgs() << "Propagating update to " << state->debugName
-                                << " of " << state->anchor << "\n"
-                                << "Value: " << *state << "\n");
+    DATAFLOW_DEBUG(LDBG() << "Propagating update to " << state->debugName
+                          << " of " << state->anchor << "\n"
+                          << "Value: " << *state);
     state->onUpdate(this);
   }
 }