Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA

llvm-svn: 2386

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/tools/analyze/analyze.cpp b/llvm/tools/analyze/analyze.cpp
index 85d6ae4d64b..8a1d86caf17 100644
--- a/llvm/tools/analyze/analyze.cpp
+++ b/llvm/tools/analyze/analyze.cpp
@@ -110,6 +110,7 @@ public:
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequired(ID);
+    AU.setPreservesAll();
   }
 };
 
@@ -137,6 +138,10 @@ struct InstForest : public FunctionPass {
   void doit(Function *F) {
     std::cout << analysis::InstForest<char>(F);
   }
+
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.setPreservesAll();
+  }
 };
 
 struct IndVars : public FunctionPass {
@@ -152,6 +157,7 @@ struct IndVars : public FunctionPass {
 
   void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequired(LoopInfo::ID);
+    AU.setPreservesAll();
   }
 };
 
@@ -183,6 +189,9 @@ struct Exprs : public FunctionPass {
       std::cout << "\n\n";
     }
   }
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.setPreservesAll();
+  }
 };