Fix division by zero problem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5509 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AliasAnalysisEvaluator.cpp b/lib/Analysis/AliasAnalysisEvaluator.cpp
index ffc0974..efd2258 100644
--- a/lib/Analysis/AliasAnalysisEvaluator.cpp
+++ b/lib/Analysis/AliasAnalysisEvaluator.cpp
@@ -66,6 +66,11 @@
bool AAEval::doFinalization(Module &M) {
unsigned Sum = No+May+Must;
std::cerr << "===== Alias Analysis Evaluator Report =====\n";
+ if (Sum == 0) {
+ std::cerr << " Alias Analysis Evaluator Summary: No pointers!\n";
+ return false;
+ }
+
std::cerr << " " << Sum << " Total Alias Queries Performed\n";
std::cerr << " " << No << " no alias responses (" << No*100/Sum << "%)\n";
std::cerr << " " << May << " may alias responses (" << May*100/Sum << "%)\n";