Add a error message to cbu to match bu

llvm-svn: 28819
2006-06-16 14:43:36 +00:00 · 2006-06-16 14:43:36 +00:00 · 0686842037
parent fbee2e56cf
commit 0686842037
1 changed files with 7 additions and 1 deletions
--- a/llvm/lib/Analysis/DataStructure/CompleteBottomUp.cpp
+++ b/llvm/lib/Analysis/DataStructure/CompleteBottomUp.cpp
@ -56,8 +56,14 @@ bool CompleteBUDataStructures::runOnModule(Module &M) {
  }

  for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
-    if (!I->isExternal() && !DSInfo.count(I))
+    if (!I->isExternal() && !DSInfo.count(I)) {
+#ifndef NDEBUG
+      if (MainFunc)
+        std::cerr << "*** CBU: Function unreachable from main: "
+                  << I->getName() << "\n";
+#endif
      calculateSCCGraphs(getOrCreateGraph(*I), Stack, NextID, ValMap);
+    }

  GlobalsGraph->removeTriviallyDeadNodes();