[all-commits] [llvm/llvm-project] af694c: [DSE] Use precise loc for memset_chk during overwr...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: af694c5e8d3dd3c6bf857a79b843006548c2901a
      https://github.com/llvm/llvm-project/commit/af694c5e8d3dd3c6bf857a79b843006548c2901a
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2022-12-02 (Fri, 02 Dec 2022)

  Changed paths:
    M llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
    M llvm/test/Transforms/DeadStoreElimination/libcalls-chk.ll

  Log Message:
  -----------
  [DSE] Use precise loc for memset_chk during overwrite checks

memset_chk may not write the number of bytes specified by the third
argument, if it is larger than the destination size (specified as 4th
argument).

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D115167