[clang] [OpenMP][AIX] Add pthreads and perfstat libraries for linking static libomp.a (PR #167706)

[David Tenty via cfe-commits]

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@@ -325,10 +327,13 @@ void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
           // Already diagnosed.
           break;
         }
+
+        CmdArgs.push_back("-lperfstat");
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daltenty wrote:

Yeah, this is going to add it for the dynamic links as well, I don't know if that's a behaviour we want.

https://github.com/llvm/llvm-project/pull/167706