[ScopDetect / ScopInfo] Get statistics for scops without any loop correctly

Make sure we also counts scops not containing any loops.

llvm-svn: 330285
diff --git a/polly/lib/Analysis/ScopDetection.cpp b/polly/lib/Analysis/ScopDetection.cpp
index 362580f..20e87c4 100644
--- a/polly/lib/Analysis/ScopDetection.cpp
+++ b/polly/lib/Analysis/ScopDetection.cpp
@@ -251,6 +251,7 @@
 
 STATISTIC(NumScopRegions, "Number of scops");
 STATISTIC(NumLoopsInScop, "Number of loops in scops");
+STATISTIC(NumScopsDepthZero, "Number of scops with maximal loop depth 0");
 STATISTIC(NumScopsDepthOne, "Number of scops with maximal loop depth 1");
 STATISTIC(NumScopsDepthTwo, "Number of scops with maximal loop depth 2");
 STATISTIC(NumScopsDepthThree, "Number of scops with maximal loop depth 3");
@@ -262,6 +263,8 @@
 STATISTIC(NumLoopsInProfScop,
           "Number of loops in scops (profitable scops only)");
 STATISTIC(NumLoopsOverall, "Number of total loops");
+STATISTIC(NumProfScopsDepthZero,
+          "Number of scops with maximal loop depth 0 (profitable scops only)");
 STATISTIC(NumProfScopsDepthOne,
           "Number of scops with maximal loop depth 1 (profitable scops only)");
 STATISTIC(NumProfScopsDepthTwo,
@@ -1757,7 +1760,9 @@
     NumLoopsInScop += Stats.NumLoops;
     MaxNumLoopsInScop =
         std::max(MaxNumLoopsInScop.getValue(), (unsigned)Stats.NumLoops);
-    if (Stats.MaxDepth == 1)
+    if (Stats.MaxDepth == 0)
+      NumScopsDepthZero++;
+    else if (Stats.MaxDepth == 1)
       NumScopsDepthOne++;
     else if (Stats.MaxDepth == 2)
       NumScopsDepthTwo++;
@@ -1773,7 +1778,9 @@
     NumLoopsInProfScop += Stats.NumLoops;
     MaxNumLoopsInProfScop =
         std::max(MaxNumLoopsInProfScop.getValue(), (unsigned)Stats.NumLoops);
-    if (Stats.MaxDepth == 1)
+    if (Stats.MaxDepth == 0)
+      NumProfScopsDepthZero++;
+    else if (Stats.MaxDepth == 1)
       NumProfScopsDepthOne++;
     else if (Stats.MaxDepth == 2)
       NumProfScopsDepthTwo++;