[PATCH] D148718: [MemProf] Optionally pass hot/cold hints to operator new

[Teresa Johnson via Phabricator via llvm-commits]

tejohnson created this revision.
tejohnson added reviewers: snehasish, davidxl.
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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


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D148718

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

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