Linker should not remap null operands of metadata
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95468 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Linker/LinkModules.cpp b/lib/Linker/LinkModules.cpp
index 279c4be..7f441b0 100644
--- a/lib/Linker/LinkModules.cpp
+++ b/lib/Linker/LinkModules.cpp
@@ -395,8 +395,12 @@
} else if (const MDNode *MD = dyn_cast<MDNode>(In)) {
if (MD->isFunctionLocal()) {
SmallVector<Value*, 4> Elts;
- for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i)
- Elts.push_back(RemapOperand(MD->getOperand(i), ValueMap));
+ for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i) {
+ if (MD->getOperand(i))
+ Elts.push_back(RemapOperand(MD->getOperand(i), ValueMap));
+ else
+ Elts.push_back(NULL);
+ }
Result = MDNode::get(In->getContext(), Elts.data(), MD->getNumOperands());
} else {
Result = const_cast<Value*>(In);