Make some debug output more informative.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104078 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index e2a3c46767c06061e7d2b189b36e0f43ebf6d214..eaf8d945bbe536564abb9f0268fccf028ea807d9 100644 (file)
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -2598,6 +2598,7 @@ void LSRInstance::FilterOutUndesirableDedicatedRegisters() {
   for (size_t LUIdx = 0, NumUses = Uses.size(); LUIdx != NumUses; ++LUIdx) {
     LSRUse &LU = Uses[LUIdx];
     FormulaSorter Sorter(L, LU, SE, DT);
+    DEBUG(dbgs() << "Filtering for use "; LU.print(dbgs()); dbgs() << "\n");
 
     for (size_t FIdx = 0, NumForms = LU.Formulae.size();
          FIdx != NumForms; ++FIdx) {
@@ -2623,9 +2624,9 @@ void LSRInstance::FilterOutUndesirableDedicatedRegisters() {
         Formula &Best = LU.Formulae[P.first->second];
         if (Sorter.operator()(F, Best))
           std::swap(F, Best);
-        DEBUG(dbgs() << "Filtering out "; F.print(dbgs());
+        DEBUG(dbgs() << "  Filtering out formula "; F.print(dbgs());
               dbgs() << "\n"
-                        "  in favor of "; Best.print(dbgs());
+                        "    in favor of formula "; Best.print(dbgs());
               dbgs() << '\n');
 #ifndef NDEBUG
         Changed = true;