Fix a crash while promoting a value out of a loop from a global variable

when using ds-aa


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20802 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 1 deletions

diff --git a/lib/Analysis/DataStructure/TopDownClosure.cpp b/lib/Analysis/DataStructure/TopDownClosure.cpp
index 45b2f2b4d2..e44cea1d8e 100644
--- a/lib/Analysis/DataStructure/TopDownClosure.cpp
+++ b/lib/Analysis/DataStructure/TopDownClosure.cpp
@@ -468,5 +468,14 @@ void TDDataStructures::copyValue(Value *From, Value *To) {
     return;
   }
 
-  assert(!isa<GlobalVariable>(From) && "Do not know how to copy GV's yet!");
+  if (const Function *F = getFnForValue(To)) {
+    DSGraph &G = getDSGraph(*F);
+    G.getScalarMap().copyScalarIfExists(From, To);
+    return;
+  }
+
+  std::cerr << *From;
+  std::cerr << *To;
+  assert(0 && "Do not know how to copy this yet!");
+  abort();
 }