Clarify that llvm.used can contain aliases.
Also add a check for llvm.used in the verifier and simplify clients now that
they can assume they have a ConstantArray.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180019 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/GlobalMerge.cpp b/lib/Transforms/Scalar/GlobalMerge.cpp
index 5d02c68..4796eb2 100644
--- a/lib/Transforms/Scalar/GlobalMerge.cpp
+++ b/lib/Transforms/Scalar/GlobalMerge.cpp
@@ -200,9 +200,8 @@
if (!GV || !GV->hasInitializer()) return;
// Should be an array of 'i8*'.
- const ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
- if (InitList == 0) return;
-
+ const ConstantArray *InitList = cast<ConstantArray>(GV->getInitializer());
+
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
if (const GlobalVariable *G =
dyn_cast<GlobalVariable>(InitList->getOperand(i)->stripPointerCasts()))