1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/MC/MCTargetAsmParser.h b/include/llvm/MC/MCTargetAsmParser.h
index 483a80b3b5..84585d68a8 100644
--- a/include/llvm/MC/MCTargetAsmParser.h
+++ b/include/llvm/MC/MCTargetAsmParser.h
@@ -142,6 +142,15 @@ public:
                           MCStreamer &Out, unsigned &ErrorInfo,
                           bool MatchingInlineAsm) = 0;
 
+  /// Allow a target to add special case operand matching for things that
+  /// tblgen doesn't/can't handle effectively. For example, literal
+  /// immediates on ARM. TableGen expects a token operand, but the parser
+  /// will recognize them as immediates.
+  virtual unsigned validateTargetOperandClass(MCParsedAsmOperand *Op,
+                                              unsigned Kind) {
+    return Match_InvalidOperand;
+  }
+
   /// checkTargetMatchPredicate - Validate the instruction match against
   /// any complex target predicates not expressible via match classes.
   virtual unsigned checkTargetMatchPredicate(MCInst &Inst) {