[clang] [Clang codegen][PPC] Produce AIX-specific "target features" only for AIX (PR #130864)

[zhijian lin via cfe-commits]

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@@ -609,13 +609,15 @@ bool PPCTargetInfo::initFeatureMap(
   // Privileged instructions are off by default.
   Features["privileged"] = false;
 
-  // The code generated by the -maix-small-local-[exec|dynamic]-tls option is
-  // turned off by default.
-  Features["aix-small-local-exec-tls"] = false;
-  Features["aix-small-local-dynamic-tls"] = false;
+  if (getTriple().isOSAIX()) {
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diggerlin wrote:

if I understand correct, we do not need to set Features["aix-small-local-exec-tls"] = false; for AIX too,  since we do not use the `HasAIXSmallLocalExecTLS`,`HasAIXShLibTLSModelOpt`,`HasAIXSmallLocalDynamicTLS` in the frontend 


https://github.com/llvm/llvm-project/pull/130864