IR: Move replaceAllUsesWith() back up to MDNode

Move `MDNodeFwdDecl::replaceAllUsesWith()` back up to `MDNode`, but
assert `isTemporary()`.

llvm-svn: 226495

1 files changed, 9 insertions, 5 deletions

diff --git a/llvm/include/llvm/IR/Metadata.h b/llvm/include/llvm/IR/Metadata.h
index a7fc7b7e51e..5371efba122 100644
--- a/llvm/include/llvm/IR/Metadata.h
+++ b/llvm/include/llvm/IR/Metadata.h
@@ -734,6 +734,15 @@ public:
   bool isDistinct() const { return Storage == Distinct; }
   bool isTemporary() const { return Storage == Temporary; }
 
+  /// \brief RAUW a temporary.
+  ///
+  /// \pre \a isTemporary() must be \c true.
+  void replaceAllUsesWith(Metadata *MD) {
+    assert(isTemporary() && "Expected temporary node");
+    assert(!isResolved() && "Expected RAUW support");
+    Context.getReplaceableUses()->replaceAllUsesWith(MD);
+  }
+
 protected:
   /// \brief Set an operand.
   ///
@@ -971,11 +980,6 @@ public:
   static bool classof(const Metadata *MD) {
     return MD->getMetadataID() == MDNodeFwdDeclKind;
   }
-
-  void replaceAllUsesWith(Metadata *MD) {
-    assert(Context.hasReplaceableUses() && "Expected RAUW support");
-    Context.getReplaceableUses()->replaceAllUsesWith(MD);
-  }
 };
 
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