[llvm] [PowerPC] Support local-dynamic TLS relocation on AIX (PR #66316)

[Chen Zheng via llvm-commits]

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@@ -240,15 +241,35 @@ entry:
 ; SYM-NEXT:   }
 ; SYM-NEXT:   Symbol {
 ; SYM-NEXT:     Index: 3
-; SYM-NEXT:     Name:
+; SYM-NEXT:     Name: .__tls_get_addr
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chenzheng1030 wrote:

The comment `I know this is not this patch's scope. But it may make more sense to use a RE to handle the symbol index. We were trying to fix this, but I guess we didn't change them all.` is more appropriate here.

https://github.com/llvm/llvm-project/pull/66316