never print zero executions blocks


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9626 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-prof/llvm-prof.cpp b/tools/llvm-prof/llvm-prof.cpp
index 80eb36b..672e0f6 100644
--- a/tools/llvm-prof/llvm-prof.cpp
+++ b/tools/llvm-prof/llvm-prof.cpp
@@ -159,6 +159,7 @@
     unsigned BlocksToPrint = Counts.size();
     if (BlocksToPrint > 20) BlocksToPrint = 20;
     for (unsigned i = 0; i != BlocksToPrint; ++i) {
+      if (Counts[i].second == 0) break;
       Function *F = Counts[i].first->getParent();
       printf("%3d. %5.2f%% %5u/%llu\t%s() - %s\n", i+1,
              Counts[i].second/(double)TotalExecutions*100,