[all-commits] [llvm/llvm-project] 2a7e7e: [MemProf] Convert removal of memprof attrs and met...

[Teresa Johnson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a7e7e2ac40a8bad2629a7790538e4ff608501ab
      https://github.com/llvm/llvm-project/commit/2a7e7e2ac40a8bad2629a7790538e4ff608501ab
  Author: Teresa Johnson <tejohnson at google.com>
  Date:   2025-10-16 (Thu, 16 Oct 2025)

  Changed paths:
    M clang/test/CodeGen/distributed-thin-lto/supports-hot-cold-new.ll
    M llvm/include/llvm/LTO/LTO.h
    M llvm/include/llvm/Transforms/IPO/MemProfContextDisambiguation.h
    M llvm/lib/LTO/LTO.cpp
    M llvm/lib/LTO/LTOBackend.cpp
    M llvm/lib/Passes/PassBuilderPipelines.cpp
    M llvm/lib/Passes/PassRegistry.def
    M llvm/lib/Transforms/IPO/MemProfContextDisambiguation.cpp
    M llvm/test/LTO/X86/memprof-supports-hot-cold-new.ll
    M llvm/test/ThinLTO/X86/memprof-supports-hot-cold-new.ll

  Log Message:
  -----------
  [MemProf] Convert removal of memprof attrs and metadata to a pass (#163841)

In preparation for a follow on fix that removes these attributes and
metadata in non-LTO pipelines, convert updateMemProfAttributes to a new
MemProfRemoveInfo pass that executes at the start of the LTO backend
pass pipelines when we don't have an index indicating that we linked
with a library support hot cold operator new.

This is largely NFC from an end user perspective but changes where the
removal can be observed, hence the test updates.

A follow on change will use the new pass for non-LTO pipelines (for
cases when the bitcode is initially matched with memprof data but we
decide to complete the compile without LTO).



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