[llvm] Move PostOrderFunctionAttr pass before GlobalOpt (PR #143535)

[Usha Gupta via llvm-commits]

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usha1830 wrote:

@nikic Thanks for reviewing.
Sorry, I didn't understand this clearly.
Do you mean it should be moved to PhaseOrdering test directory or replicated there? Or modified to use full LTO pipeline instead of just the 3 passes that I am currently using.

https://github.com/llvm/llvm-project/pull/143535