LLParser: Split out ParseMetadataAttachment(), NFC

Make the code reusable for `Function` metadata attachments (PR23340).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235778 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 441d36cb21d877e307b84699b28a5471465c1172..18fa6978065cdcb6d3093fab1c71580077512c33 100644 (file)
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -1490,6 +1490,18 @@ bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
   return false;
 }
 
+/// ParseMetadataAttachment
+///   ::= !dbg !42
+bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
+  assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
+
+  std::string Name = Lex.getStrVal();
+  Kind = M->getMDKindID(Name);
+  Lex.Lex();
+
+  return ParseMDNode(MD);
+}
+
 /// ParseInstructionMetadata
 ///   ::= !dbg !42 (',' !dbg !57)*
 bool LLParser::ParseInstructionMetadata(Instruction *Inst,
@@ -1498,12 +1510,9 @@ bool LLParser::ParseInstructionMetadata(Instruction *Inst,
     if (Lex.getKind() != lltok::MetadataVar)
       return TokError("expected metadata after comma");
 
-    std::string Name = Lex.getStrVal();
-    unsigned MDK = M->getMDKindID(Name);
-    Lex.Lex();
-
+    unsigned MDK;
     MDNode *N;
-    if (ParseMDNode(N))
+    if (ParseMetadataAttachment(MDK, N))
       return true;
 
     Inst->setMetadata(MDK, N);

diff --git a/lib/AsmParser/LLParser.h b/lib/AsmParser/LLParser.h
index 117cdcba2551ff64ecf5c427119c445a43c98c41..9db50a7b173a27cb78f3d6dd43d6f2e959a8ebd4 100644 (file)
--- a/lib/AsmParser/LLParser.h
+++ b/lib/AsmParser/LLParser.h
@@ -392,6 +392,7 @@ namespace llvm {
     bool ParseMDNode(MDNode *&MD);
     bool ParseMDNodeTail(MDNode *&MD);
     bool ParseMDNodeVector(SmallVectorImpl<Metadata *> &MDs);
+    bool ParseMetadataAttachment(unsigned &Kind, MDNode *&MD);
     bool ParseInstructionMetadata(Instruction *Inst, PerFunctionState *PFS);
 
     template <class FieldTy>