[all-commits] [llvm/llvm-project] b2f6d3: [MemProf] Fix tailcall discovery checking for mult...

[Teresa Johnson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b2f6d323fcd1833a7092e7d338578e0af0ac138d
      https://github.com/llvm/llvm-project/commit/b2f6d323fcd1833a7092e7d338578e0af0ac138d
  Author: Teresa Johnson <tejohnson at google.com>
  Date:   2024-05-24 (Fri, 24 May 2024)

  Changed paths:
    M llvm/lib/Transforms/IPO/MemProfContextDisambiguation.cpp
    M llvm/test/ThinLTO/X86/memprof-tailcall-nonunique.ll
    M llvm/test/Transforms/MemProfContextDisambiguation/tailcall-nonunique.ll

  Log Message:
  -----------
  [MemProf] Fix tailcall discovery checking for multiple callee chains (#92632)

When looking for missing frames due to tail calls, we were not checking
the output parameter of the recursive call in the correct place.
Make sure we check for the case when that recursive call returned false
due to multiple possible callee chains.

Extended the existing test a bit to catch this case.



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