[all-commits] [llvm/llvm-project] d866b9: [dfsan] Propagate origin tracking at load

[Z via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d866b9c99d0ae71c48a9e6c8849aacfba8200968
      https://github.com/llvm/llvm-project/commit/d866b9c99d0ae71c48a9e6c8849aacfba8200968
  Author: Jianzhou Zhao <jianzhouzh at google.com>
  Date:   2021-03-03 (Wed, 03 Mar 2021)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
    A llvm/test/Instrumentation/DataFlowSanitizer/origin_ldst.ll

  Log Message:
  -----------
  [dfsan] Propagate origin tracking at load

This is a part of https://reviews.llvm.org/D95835.

One issue is about origin load optimization: see the
comments of useCallbackLoadLabelAndOrigin

@gbalats This change may have some conflicts with your 8bit change. PTAL the change at visitLoad.

Reviewed By: morehouse, gbalats

Differential Revision: https://reviews.llvm.org/D97570