[all-commits] [llvm/llvm-project] b1cbd3: [ICP] Add a few tunings to indirect-call-promtion

[xur-llvm via All-commits]

  Branch: refs/heads/users/xur-llvm/icp_work
  Home:   https://github.com/llvm/llvm-project
  Commit: b1cbd3eb296e34ff3a36c4e0fa4471ff84391dd2
      https://github.com/llvm/llvm-project/commit/b1cbd3eb296e34ff3a36c4e0fa4471ff84391dd2
  Author: Rong Xu <xur at google.com>
  Date:   2025-07-22 (Tue, 22 Jul 2025)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/IndirectCallPromotion.cpp
    M llvm/test/ThinLTO/X86/memprof-icp.ll
    A llvm/test/Transforms/PGOProfile/indirect_call_promotion2.ll

  Log Message:
  -----------
  [ICP] Add a few tunings to indirect-call-promtion

Indirect-call promotion (ICP) has been adjusted with the following
tunings.
  (1) Candidate functions can be now ICP'd even if only a declaration
      is present.
  (2) All non-cold candidate functions are now considered by ICP.
      Previously, only hot targets were considered.
  (3) If one target cannot be ICP'd, proceed with the remaining
      targets instead of exiting the callsite.

In this patch, all tunings are disabled by default. They will be
enabled in a subsequent patch.



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