[PATCH] D86019: [SLC] Optimize _mempcpy_chk to direct call to mempcpy

[Dávid Bolvanský via Phabricator via llvm-commits]

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As reported in PR46735:

void* f(void *d, const void *s, size_t l)
{

  return __builtin___mempcpy_chk(d, s, l, __builtin_object_size(d, 0));

}

This can be optimized to `return mempcpy(d, s, l);`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D86019

Files:
  llvm/include/llvm/Analysis/TargetLibraryInfo.def
  llvm/include/llvm/Transforms/Utils/SimplifyLibCalls.h
  llvm/lib/Analysis/TargetLibraryInfo.cpp
  llvm/lib/Transforms/Utils/BuildLibCalls.cpp
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
  llvm/test/Transforms/InstCombine/fortify-folding.ll

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