[PATCH] D32839: SimplifyLibCalls: Optimize wcslen

[Matthias Braun via Phabricator via llvm-commits]

MatzeB created this revision.
Herald added a subscriber: mcrosier.

Refactor the strlen optimization code to work for both strlen and wcslen.

This especially helps with programs in the wild where people pass `L"string"`s to `const std::wstring&` function parameters  and the wstring constructor gets inlined.


Repository:
  rL LLVM

https://reviews.llvm.org/D32839

Files:
  include/llvm/Analysis/ValueTracking.h
  include/llvm/IR/Constants.h
  include/llvm/Transforms/Utils/SimplifyLibCalls.h
  lib/Analysis/ValueTracking.cpp
  lib/IR/Constants.cpp
  lib/Transforms/Utils/SimplifyLibCalls.cpp
  test/Transforms/InstCombine/wcslen.ll

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