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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2386 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index c68004d245..12d518b3c8 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -470,6 +470,10 @@ namespace {
       SCCP S(F);
       return S.doSCCP();
     }
+    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+      // FIXME: SCCP does not preserve the CFG because it folds terminators!
+      //AU.preservesCFG();
+    }
   };
 }