[clang] [llvm] [PowerPC] Tune AIX shared library TLS model at function level by heuristic (PR #84132)

[Kai Luo via cfe-commits]

================
@@ -329,6 +329,12 @@ def FeatureAIXLocalExecTLS :
                    "Produce a TOC-free local-exec TLS sequence for this 
function "
                    "for 64-bit AIX">;
 
+def FeatureAIXSharedLibraryTLSModelHeuristic :
+  SubtargetFeature<"aix-shared-library-tls-model-heuristic",
----------------
bzEq wrote:

This should be an optimization, maybe rename to 
`aix-shared-library-tls-model-opt`, we perform optimization based on some 
heuristics.

https://github.com/llvm/llvm-project/pull/84132
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