[AsmParser] Add a function to parse a standalone type.

This is useful for MIR serialization. Indeed generic machine instructions
must have a type and we don't want to duplicate the logic in the MIParser.

llvm-svn: 262868

1 files changed, 12 insertions, 0 deletions

diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 3f97cd61ae4..9b9054dbaed 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -63,6 +63,18 @@ bool LLParser::parseStandaloneConstantValue(Constant *&C,
   return false;
 }
 
+bool LLParser::parseStandaloneType(Type *&Ty, const SlotMapping *Slots) {
+  restoreParsingState(Slots);
+  Lex.Lex();
+
+  Ty = nullptr;
+  if (ParseType(Ty))
+    return true;
+  if (Lex.getKind() != lltok::Eof)
+    return Error(Lex.getLoc(), "expected end of string");
+  return false;
+}
+
 void LLParser::restoreParsingState(const SlotMapping *Slots) {
   if (!Slots)
     return;