[all-commits] [llvm/llvm-project] c24016: [Analysis] improve function matching for strlen li...

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  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c240169ff2e416f2652a5d3a80a83ef68ab7fa23
      https://github.com/llvm/llvm-project/commit/c240169ff2e416f2652a5d3a80a83ef68ab7fa23
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2021-09-22 (Wed, 22 Sep 2021)

  Changed paths:
    M llvm/lib/Analysis/TargetLibraryInfo.cpp
    M llvm/test/Transforms/InstCombine/call-callconv.ll
    M llvm/test/Transforms/InstCombine/simplify-libcalls.ll

  Log Message:
  -----------
  [Analysis] improve function matching for strlen libcall

The return type of strlen is size_t, not just any integer.

This is a partial fix for an example based on:
https://llvm.org/PR50836

There's another bug here because we can still crash
processing a real strlen or something that looks like it.