[all-commits] [llvm/llvm-project] a35206: [MemProf] Optionally pass hot/cold hints to operat...

[Teresa Johnson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a35206d78280e0ebcf48cd21bc5fff5c3b9c73fa
      https://github.com/llvm/llvm-project/commit/a35206d78280e0ebcf48cd21bc5fff5c3b9c73fa
  Author: Teresa Johnson <tejohnson at google.com>
  Date:   2023-04-19 (Wed, 19 Apr 2023)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetLibraryInfo.def
    M llvm/include/llvm/Transforms/Utils/BuildLibCalls.h
    M llvm/include/llvm/Transforms/Utils/SimplifyLibCalls.h
    M llvm/lib/Analysis/MemoryBuiltins.cpp
    M llvm/lib/Analysis/TargetLibraryInfo.cpp
    M llvm/lib/Transforms/Utils/BuildLibCalls.cpp
    M llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
    A llvm/test/Transforms/InstCombine/simplify-libcalls-new.ll
    M llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
    M llvm/unittests/Analysis/TargetLibraryInfoTest.cpp

  Log Message:
  -----------
  [MemProf] Optionally pass hot/cold hints to operator new

Optionally (off by default) replace operator new() calls marked with a
hot or cold memprof attribute with an operator new() call that takes a
hot_cold_t parameter.

Currently this is supported by the open source version of tcmalloc, see:
https://github.com/google/tcmalloc/blob/master/tcmalloc/new_extension.h

Differential Revision: https://reviews.llvm.org/D148718