[llvm] [IR] Allow MDString in operand bundles (PR #110805)

[Matt Arsenault via llvm-commits]

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@@ -3941,6 +3941,15 @@ bool LLParser::parseValID(ValID &ID, PerFunctionState *PFS, Type *ExpectedTy) {
     ID.Kind = ValID::t_Constant;
     return false;
 
+  case lltok::exclaim: {
+    Lex.Lex();
+    ID.StrVal = Lex.getStrVal();
+    if (parseToken(lltok::StringConstant, "expected string"))
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arsenm wrote:

Test error case 

https://github.com/llvm/llvm-project/pull/110805