[llvm] [Xtensa] Fix code generation for TLS variables. (PR #202822)

[Matt Arsenault via llvm-commits]

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@@ -61,7 +62,9 @@ void XtensaTargetAsmStreamer::emitLiteral(MCSymbol *LblSym, const MCExpr *Value,
     LiteralStr << CE->getValue() << "\n";
   } else if (auto SRE = dyn_cast<MCSymbolRefExpr>(Value)) {
     const MCSymbol &Sym = SRE->getSymbol();
-    LiteralStr << Sym.getName() << "\n";
+    Xtensa::Specifier Spec = (Xtensa::Specifier)SRE->getSpecifier();
+    StringRef Modifier = (Spec == Xtensa::S_TPOFF) ? "@TPOFF" : "";
+    LiteralStr << Sym.getName() << Modifier << "\n";
----------------
arsenm wrote:

```suggestion
    LiteralStr << Sym.getName()
    if (Spec == Xtensa::S_TPOFF)
      LiteralStr <<  "@TPOFF";
    LiteralStr << '\n';
```

https://github.com/llvm/llvm-project/pull/202822