Import LLVM r73340.

1 files changed, 0 insertions, 15 deletions

diff --git a/lib/Transforms/IPO/GlobalDCE.cpp b/lib/Transforms/IPO/GlobalDCE.cpp
index db378b0..9c652b9 100644
--- a/lib/Transforms/IPO/GlobalDCE.cpp
+++ b/lib/Transforms/IPO/GlobalDCE.cpp
@@ -47,7 +47,6 @@ namespace {
     void GlobalIsNeeded(GlobalValue *GV);
     void MarkUsedGlobalsAsNeeded(Constant *C);
 
-    bool SafeToDestroyConstant(Constant* C);
     bool RemoveUnusedGlobalValue(GlobalValue &GV);
   };
 }
@@ -211,17 +210,3 @@ bool GlobalDCE::RemoveUnusedGlobalValue(GlobalValue &GV) {
   GV.removeDeadConstantUsers();
   return GV.use_empty();
 }
-
-// SafeToDestroyConstant - It is safe to destroy a constant iff it is only used
-// by constants itself.  Note that constants cannot be cyclic, so this test is
-// pretty easy to implement recursively.
-//
-bool GlobalDCE::SafeToDestroyConstant(Constant *C) {
-  for (Value::use_iterator I = C->use_begin(), E = C->use_end(); I != E; ++I)
-    if (Constant *User = dyn_cast<Constant>(*I)) {
-      if (!SafeToDestroyConstant(User)) return false;
-    } else {
-      return false;
-    }
-  return true;
-}