Add back a couple checks removed by r129128; the fact that an intitializer
is an array of structures doesn't imply it's a ConstantArray of
ConstantStruct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129207 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 5b6ed2c..71d13ed 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -1954,11 +1954,13 @@
// only allowed to optimize the initializer if it is unique.
if (!GV->hasUniqueInitializer()) return 0;
- ConstantArray *CA = cast<ConstantArray>(GV->getInitializer());
-
+ ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
+ if (!CA) return 0;
+
for (User::op_iterator i = CA->op_begin(), e = CA->op_end(); i != e; ++i) {
- ConstantStruct *CS = cast<ConstantStruct>(*i);
-
+ ConstantStruct *CS = dyn_cast<ConstantStruct>(*i);
+ if (!CS) return 0;
+
if (isa<ConstantPointerNull>(CS->getOperand(1)))
continue;