[llvm] [NFC][TableGen] Emit nested namespaces in InstrInfoEmitter (PR #124210)

[Rahul Joshi via llvm-commits]

================
@@ -1318,42 +1291,35 @@ void InstrInfoEmitter::emitEnums(raw_ostream &OS) {
   OS << "#ifdef GET_INSTRINFO_ENUM\n";
   OS << "#undef GET_INSTRINFO_ENUM\n";
 
-  OS << "namespace llvm {\n\n";
-
   const CodeGenTarget &Target = CDP.getTargetInfo();
-
-  // We must emit the PHI opcode first...
   StringRef Namespace = Target.getInstNamespace();
 
   if (Namespace.empty())
     PrintFatalError("No instructions defined!");
 
-  OS << "namespace " << Namespace << " {\n";
+  OS << "namespace llvm::" << Namespace << " {\n";
+
+  // We must emit the PHI opcode first...
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jurahul wrote:

Done.

https://github.com/llvm/llvm-project/pull/124210