Revert this because we can't clone cyclic MDNodes which are creating during a
build of llvm-gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109355 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/ValueMapper.cpp b/lib/Transforms/Utils/ValueMapper.cpp
index 7b60d96..3f6a90c 100644
--- a/lib/Transforms/Utils/ValueMapper.cpp
+++ b/lib/Transforms/Utils/ValueMapper.cpp
@@ -27,9 +27,10 @@
// NOTE: VMSlot can be invalidated by any reference to VM, which can grow the
// DenseMap. This includes any recursive calls to MapValue.
- // Global values do not need to be seeded into the VM if they are using
- // the identity mapping.
- if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V))
+ // Global values and non-function-local metadata do not need to be seeded into
+ // the VM if they are using the identity mapping.
+ if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V) ||
+ (isa<MDNode>(V) && !cast<MDNode>(V)->isFunctionLocal()))
return VMSlot = const_cast<Value*>(V);
if (const MDNode *MD = dyn_cast<MDNode>(V)) {