[llvm] [TableGen] Fix validateOperandClass for non Phyical Reg (PR #118146)

[Sergei Barannikov via llvm-commits]

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@@ -2522,8 +2522,9 @@ static void emitValidateOperandClass(const CodeGenTarget &Target,
   for (auto &MatchClassName : Table)
     OS << "      " << MatchClassName << ",\n";
   OS << "    };\n\n";
-  OS << "    MatchClassKind OpKind = "
-        "(MatchClassKind)Table[Operand.getReg().id()];\n";
+  OS << "    auto RegID=Operand.getReg().id();\n";
+  OS << "    MatchClassKind OpKind =  MCRegister::isPhysicalRegister(RegID)?"
+        "(MatchClassKind)Table[RegID]: InvalidMatchClass;\n";
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s-barannikov wrote:

nitpicking
* `auto` is discouraged by the coding standard
* the generated code is misformatted around '=', '?' and ':'



https://github.com/llvm/llvm-project/pull/118146