IR: MDNode => Value: NamedMDNode::getOperator()

Change `NamedMDNode::getOperator()` from returning `MDNode *` to
returning `Value *`.  To reduce boilerplate at some call sites, add a
`getOperatorAsMDNode()` for named metadata that's expected to only
return `MDNode` -- for now, that's everything, but debug node named
metadata (such as llvm.dbg.cu and llvm.dbg.sp) will soon change.  This
is part of PR21433.

Note that there's a follow-up patch to clang for the API change.

llvm-svn: 221375

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index f6ab9197244..7e60e05fd00 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -560,8 +560,8 @@ LLVMValueRef LLVMGetMetadata(LLVMValueRef Inst, unsigned KindID) {
 }
 
 void LLVMSetMetadata(LLVMValueRef Inst, unsigned KindID, LLVMValueRef MD) {
-  unwrap<Instruction>(Inst)->setMetadata(KindID,
-                                         MD ? unwrap<MDNode>(MD) : nullptr);
+  unwrap<Instruction>(Inst)
+      ->setMetadata(KindID, MD ? unwrap<Value>(MD) : nullptr);
 }
 
 /*--.. Conversion functions ................................................--*/
@@ -720,7 +720,7 @@ void LLVMAddNamedMetadataOperand(LLVMModuleRef M, const char* name,
   NamedMDNode *N = unwrap(M)->getOrInsertNamedMetadata(name);
   if (!N)
     return;
-  MDNode *Op = Val ? unwrap<MDNode>(Val) : nullptr;
+  Value *Op = Val ? unwrap<Value>(Val) : nullptr;
   if (Op)
     N->addOperand(Op);
 }