[MLIR][NFC] Fix/update debug messages for analysis utils and affine fusion

Drop trailing period in debug messages. Add an extra line for fusion
debug info.

Differential Revision: https://reviews.llvm.org/D79471
diff --git a/mlir/lib/Transforms/LoopFusion.cpp b/mlir/lib/Transforms/LoopFusion.cpp
index 1340c25..c8c33f3 100644
--- a/mlir/lib/Transforms/LoopFusion.cpp
+++ b/mlir/lib/Transforms/LoopFusion.cpp
@@ -1063,8 +1063,8 @@
                                unsigned *dstLoopDepth, bool maximalFusion,
                                double computeToleranceThreshold) {
   LLVM_DEBUG({
-    llvm::dbgs() << "Checking whether fusion is profitable between:\n";
-    llvm::dbgs() << " " << *srcOpInst << " and \n";
+    llvm::dbgs() << "Checking whether fusion is profitable between src op:\n";
+    llvm::dbgs() << ' ' << *srcOpInst << " and destination op(s)\n";
     for (auto dstOpInst : dstLoadOpInsts) {
       llvm::dbgs() << " " << *dstOpInst << "\n";
     };