[PATCH] D24004: [ThinLTO] Indirect call promotion fixes for promoted local functions

[Teresa Johnson via llvm-commits]

tejohnson created this revision.
tejohnson added reviewers: davidxl, mehdi_amini.
tejohnson added subscribers: llvm-commits, Prazek.
Herald added a subscriber: mehdi_amini.

Fix a couple issues limiting the application of indirect call promotion
in ThinLTO mode:
- Invoke indirect call promotion before globalopt, since it may
  eliminate imported functions which appear unreferenced.
- Invoke indirect call promotion with InLTO=true so that the PGOFuncName
  metadata is used to get the name for locals which would have been
  renamed during promotion.

https://reviews.llvm.org/D24004

Files:
  lib/ProfileData/InstrProf.cpp
  lib/Transforms/IPO/PassManagerBuilder.cpp
  test/Transforms/PGOProfile/Inputs/thinlto_indirect_call_promotion.ll
  test/Transforms/PGOProfile/thinlto_indirect_call_promotion.ll

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